Articles | Volume 14, issue 3
https://doi.org/10.5194/se-14-271-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/se-14-271-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
09 Mar 2023
Research article |
| 09 Mar 2023
| 09 Mar 2023
Large grain-size-dependent rheology contrasts of halite at low differential stress: evidence from microstructural study of naturally deformed gneissic Zechstein 2 rock salt (Kristallbrockensalz) from the northern Netherlands
Jessica Barabasch
CORRESPONDING AUTHOR
Institute for Structural Geology, Tectonics and Geomechanics, RWTH
Aachen University, Lochnerstrasse 4-20, 52056 Aachen, Germany
Joyce Schmatz
MaP – Microstructure and Pores GmbH, Junkerstrasse 93, 52064 Aachen,
Germany
Jop Klaver
MaP – Microstructure and Pores GmbH, Junkerstrasse 93, 52064 Aachen,
Germany
Alexander Schwedt
Central Facility for Electron Microscopy (GFE), RWTH Aachen
University, Ahornstr. 55, 52074 Aachen, Germany
Janos L. Urai
Institute for Structural Geology, Tectonics and Geomechanics, RWTH
Aachen University, Lochnerstrasse 4-20, 52056 Aachen, Germany
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We analyse folded multilayer sequences in the Ocnele Mari salt mine (Romania) to gain insight into the long-term rheological behaviour of rock salt. Our results indicate the large role of even a small number of impurities in the rock salt for its effective mechanical behaviour. We demonstrate how the development of folds that occur at various scales can be used to constrain the viscosity ratio in the deformed multilayer sequence.
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Manuscript not accepted for further review
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Marbles in the desert areas of Namibia and Oman were found to be consumed from inside the rock mass by microbiological activity of a thus far unknown nature that created bands of parallel tubules. These bands formed along fractures in the rock and only surfaced after erosion made them visible. We consider this a new niche for life that has so far not been described. These life forms may have an unknown impact on the global carbon cycle.
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Understanding the mechanism of mechanical compaction is important. Previous studies on mechanical compaction were mostly done by performing experiments. Studies on natural rocks are rare due to compositional heterogeneity of the sedimentary succession with depth. Due to remarkable similarity in composition and grain size, the Sumatra subduction complex provides a unique opportunity to study the micromechanism of mechanical compaction on natural samples.
Manuel D. Menzel, Janos L. Urai, Estibalitz Ukar, Thierry Decrausaz, and Marguerite Godard
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Solid Earth, 13, 901–915, https://doi.org/10.5194/se-13-901-2022, https://doi.org/10.5194/se-13-901-2022, 2022
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Triaxial compression tests at different effective stresses allow for analysing the deformation behaviour of Opalinus Clay, the potential host rock for nuclear waste in Switzerland. We conducted microstructural investigations of the deformed samples to relate the bulk hydro-mechanical behaviour to the processes on the microscale. Results show a transition from brittle- to more ductile-dominated deformation. We propose a non-linear failure envelop associated with the failure mode transition.
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Rock fractures are organized as networks with spatially varying arrangements. Due to networks' influence on bulk rock behaviour, it is important to quantify network spatial variation. We utilize an approach where fracture networks are treated as spatial graphs. By combining graph similarity measures with clustering techniques, spatial clusters within large-scale fracture networks are identified and organized hierarchically. The method is validated on a dataset with nearly 300 000 fractures.
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An experimentally deformed sample of Opalinus Clay (OPA), which is being considered as host rock for nuclear waste in Switzerland, was studied by electron microscopy to image deformation microstructures. Deformation localised by forming micrometre-thick fractures. Deformation zones show dilatant micro-cracking, granular flow and bending grains, and pore collapse. Our model, with three different stages of damage accumulation, illustrates microstructural deformation in a compressed OPA sample.
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Faults form due to stresses caused by crustal processes. As faults influence the stress field locally, fault interaction leads to local variations in the stress field, but this is difficult to observe directly.
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We use drones to study surface geometries of massively dilatant faults (MDFs) in Iceland, with apertures up to tens of meters at the surface. Based on throw, aperture and structures, we define three geometrically different endmembers of the surface expression of MDFs and show that they belong to one continuum. The transition between the endmembers is fluent and can change at one fault over short distances, implying less distinct control of deeper structures on surface geometries than expected.
Mark G. Rowan, Janos L. Urai, J. Carl Fiduk, and Peter A. Kukla
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Ancient evaporite sequences were deposited as interlayered rocksalt, other evaporites, and non-evaporite rocks that have enormous differences in strength. Whereas the ductile layers flow during deformation, strong layers are folded and/or torn apart, with the intrasalt deformation dependent on the mode and history of salt tectonics. This has important implications for accurately imaging and interpreting subsurface seismic data and for drilling wells through evaporite sequences.
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The marbles of the migmatitic dome on the island Naxos contain deformed layers of amphibolite with multiple phases of boudinage. The boudins formed by E–W shortening normal to the layers and layer parallel extension in various directions. We identified five different generations of boudins that show that E–W shortening is the prevalent deformation in these rocks during the peak metamorphosis and the following cooling, different from other parts of the island dominated by top-to-north shearing.
Ben Laurich, Janos L. Urai, Christian Vollmer, and Christophe Nussbaum
Solid Earth, 9, 1–24, https://doi.org/10.5194/se-9-1-2018, https://doi.org/10.5194/se-9-1-2018, 2018
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In Switzerland, the Opalinus Clay (OPA) formation is favored to host a repository for nuclear waste. Thus, we must know its deformation behavior. In this study, we focused on the microstructure of gouge, a thin (< 2 cm), drastically strained clay layer at the so-called Main Fault in the Mont Terri rock laboratory. We suggest that in situ gouge deforms in a more viscous manner than undeformed OPA in laboratory conditions. Moreover, we speculate about the origin and evolution of the gouge layer.
Guillaume Desbois, Nadine Höhne, Janos L. Urai, Pierre Bésuelle, and Gioacchino Viggiani
Solid Earth, 8, 291–305, https://doi.org/10.5194/se-8-291-2017, https://doi.org/10.5194/se-8-291-2017, 2017
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This work integrates measurements of the mechanical and transport properties with microstructures to understand deformation mechanisms in cemented mudrock. Cataclastic mechanisms are dominant down to nanometre scale. At low strain the fabric contains recognizable open fractures, while at high strain the reworked clay gouge shows resealing of initial fracture porosity. In the future, it will provide a microphysical basis for constitutive models to improve their extrapolation for long timescales.
Ben Laurich, Janos L. Urai, and Christophe Nussbaum
Solid Earth, 8, 27–44, https://doi.org/10.5194/se-8-27-2017, https://doi.org/10.5194/se-8-27-2017, 2017
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Scaly clay is a well-known rock fabric that can develop in tectonic systems and that can alter the physical rock properties of a formation. However, the internal microstructure and evolution of this fabric remain poorly understood. We examined the scaly microstructure of progressively faulted Opalinus Clay using optical as well as scanning electron microscopy. We show that as little as 1 vol.% in scaly clay aggregates is strained and present an evolutionary model for this.
A. F. Raith, F. Strozyk, J. Visser, and J. L. Urai
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3D seismic and well data were used to study the evolution of salt pillows with extreme mechanical stratification to gain a better understanding of layered evaporite deposits. During evaporation an active basement graben caused the local accumulation of thick K-Mg salts. The resulting structure after the following extensional and compressional salt flow was strongly influenced by folding of the ruptured ZIII-AC stringer, leading to thickening and internal deformation of the soft K-Mg salt layers.
Related subject area
Subject area: Tectonic plate interactions, magma genesis, and lithosphere deformation at all scales | Editorial team: Structural geology and tectonics, paleoseismology, rock physics, experimental deformation | Discipline: Structural geology
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Johanna Heeb, David Healy, Nicholas E. Timms, and Enrique Gomez-Rivas
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Hydration of rocks is a key process in the Earth’s crust and mantle that is accompanied by changes in physical traits and mechanical behaviour of rocks. This study assesses the influence of stress on hydration reaction kinetics and mechanics in experiments on anhydrite. We show that hydration occurs readily under stress and results in localized hydration along fractures and mechanic weakening. New gypsum growth is selective and depends on the stress field and host anhydrite crystal orientation.
Roy Helge Gabrielsen, Panagiotis Athanasios Giannenas, Dimitrios Sokoutis, Ernst Willingshofer, Muhammad Hassaan, and Jan Inge Faleide
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The Barents Shear Margin defines the border between the relatively shallow Barents Sea that is situated on a continental plate and the deep ocean. This margin's evolution history was probably influenced by plate tectonic reorganizations. From scaled experiments, we deduced several types of structures (faults, folds, and sedimentary basins) that help us to improve the understanding of the history of the opening of the North Atlantic.
Leslie Logan, Ervin Veress, Joel B. H. Andersson, Olof Martinsson, and Tobias E. Bauer
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The Pahtohavare Cu ± Au deposits in the Kiruna mining district have a dubious timing of formation and have not been contextualized within an up-to-date tectonic framework. Structural mapping was carried out to reveal that the deposits are hosted in brittle structures that cut a noncylindrical, SE-plunging anticline constrained to have formed during the late-Svecokarelian orogeny. These results show that Cu ± Au mineralization formed more than ca. 80 Myr after iron oxide–apatite mineralization.
Alexandra Tamas, Dan M. Tamas, Gabor Tari, Csaba Krezsek, Alexandru Lapadat, and Zsolt Schleder
Solid Earth, 14, 741–761, https://doi.org/10.5194/se-14-741-2023, https://doi.org/10.5194/se-14-741-2023, 2023
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Tectonic processes are complex and often difficult to understand due to the limitations of surface or subsurface data. One such process is inversion tectonics, which means that an area initially developed in an extension (such as the opening of an ocean) is reversed to compression (the process leading to mountain building). In this research, we use a laboratory method (analogue modelling), and with the help of a sandbox, we try to better understand structures (folds/faults) related to inversion.
Elizabeth Parker Wilson, Pablo Granado, Pablo Santolaria, Oriol Ferrer, and Josep Anton Muñoz
Solid Earth, 14, 709–739, https://doi.org/10.5194/se-14-709-2023, https://doi.org/10.5194/se-14-709-2023, 2023
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This work focuses on the control of accommodation zones on extensional and subsequent inversion in salt-detached domains using sandbox analogue models. During extension, the transfer zone acts as a pathway for the movement of salt, changing the expected geometries. When inverted, the salt layer and syn-inversion sedimentation control the deformation style in the salt-detached cover system. Three natural cases are compared to the model results and show similar inversion geometries.
Oriol Ferrer, Eloi Carola, and Ken McClay
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Using an experimental approach based on scaled sandbox models, this work aims to understand how salt above different rotational fault blocks influences the cover geometry and evolution, first during extension and then during inversion. The results show that inherited salt structures constrain contractional deformation. We show for the first time how welds and fault welds are reopened during contractional deformation, having direct implications for the subsurface exploration of natural resources.
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Solid Earth, 14, 551–570, https://doi.org/10.5194/se-14-551-2023, https://doi.org/10.5194/se-14-551-2023, 2023
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The Vinschgau Shear Zone (VSZ) is one of the largest and most significant shear zones developed within the Late Cretaceous thrust stack in the Austroalpine domain of the eastern Alps. 40Ar / 39Ar geochronology constrains the activity of the VSZ between 97 and 80 Ma. The decreasing vorticity towards the core of the shear zone, coupled with the younging of mylonites, points to a shear thinning behavior. The deepest units of the Eo-Alpine orogenic wedge were exhumed along the VSZ.
Jordi Miró, Oriol Ferrer, Josep Anton Muñoz, and Gianreto Manastchal
Solid Earth, 14, 425–445, https://doi.org/10.5194/se-14-425-2023, https://doi.org/10.5194/se-14-425-2023, 2023
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Using the Asturian–Basque–Cantabrian system and analogue (sandbox) models, this work focuses on the linkage between basement-controlled and salt-decoupled domains and how deformation is accommodated between the two during extension and subsequent inversion. Analogue models show significant structural variability in the transitional domain, with oblique structures that can be strongly modified by syn-contractional sedimentation. Experimental results are consistent with the case study.
Junichi Fukuda, Takamoto Okudaira, and Yukiko Ohtomo
Solid Earth, 14, 409–424, https://doi.org/10.5194/se-14-409-2023, https://doi.org/10.5194/se-14-409-2023, 2023
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We measured water distributions in deformed quartz by infrared spectroscopy mapping and used the results to discuss changes in water distribution resulting from textural development. Because of the grain size reduction process (dynamic recrystallization), water contents decrease from 40–1750 wt ppm in host grains of ~2 mm to 100–510 wt ppm in recrystallized regions composed of fine grains of ~10 µm. Our results indicate that water is released and homogenized by dynamic recrystallization.
Michael Rudolf, Matthias Rosenau, and Onno Oncken
Solid Earth, 14, 311–331, https://doi.org/10.5194/se-14-311-2023, https://doi.org/10.5194/se-14-311-2023, 2023
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Analogue models of tectonic processes rely on the reproduction of their geometry, kinematics and dynamics. An important property is fault behaviour, which is linked to the frictional characteristics of the fault gouge. This is represented by granular materials, such as quartz sand. In our study we investigate the time-dependent frictional properties of various analogue materials and highlight their impact on the suitability of these materials for analogue models focusing on fault reactivation.
Nicolás Molnar and Susanne Buiter
Solid Earth, 14, 213–235, https://doi.org/10.5194/se-14-213-2023, https://doi.org/10.5194/se-14-213-2023, 2023
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Progression of orogenic wedges over pre-existing extensional structures is common in nature, but deciphering the spatio-temporal evolution of deformation from the geological record remains challenging. Our laboratory experiments provide insights on how horizontal stresses are transferred across a heterogeneous crust, constrain which pre-shortening conditions can either favour or hinder the reactivatation of extensional structures, and explain what implications they have on critical taper theory.
Tania Habel, Martine Simoes, Robin Lacassin, Daniel Carrizo, and German Aguilar
Solid Earth, 14, 17–42, https://doi.org/10.5194/se-14-17-2023, https://doi.org/10.5194/se-14-17-2023, 2023
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The Central Andes are one of the most emblematic reliefs on Earth, but their western flank remains understudied. Here we explore two rare key sites in the hostile conditions of the Atacama desert to build cross-sections, quantify crustal shortening, and discuss the timing of this deformation at ∼20–22°S. We propose that the structures of the Western Andes accommodated significant crustal shortening here, but only during the earliest stages of mountain building.
Naïm Célini, Frédéric Mouthereau, Abdeltif Lahfid, Claude Gout, and Jean-Paul Callot
Solid Earth, 14, 1–16, https://doi.org/10.5194/se-14-1-2023, https://doi.org/10.5194/se-14-1-2023, 2023
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We investigate the peak temperature of sedimentary rocks of the SW Alps (France), using Raman spectroscopy on carbonaceous material. This method provides an estimate of the peak temperature achieved by organic-rich rocks. To determine the timing and the tectonic context of the origin of these temperatures we use 1D thermal modelling. We find that the high temperatures up to 300 °C were achieved during precollisional extensional events, not during tectonic burial in the Western Alps.
Pâmela Cristina Richetti, Frank Zwaan, Guido Schreurs, Renata S. Schmitt, and Timothy Chris Schmid
EGUsphere, https://doi.org/10.5194/egusphere-2022-1251, https://doi.org/10.5194/egusphere-2022-1251, 2022
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The Araripe Basin in NE Brazil was originally formed during Cretaceous times, as South America and Africa broke up. The basin is an important analogue to offshore South Atlantic break-up basins; its sediments were uplifted and are now found at a 1000 m height, allowing for study, but the cause of the uplift remains debated. Here we ran a series of tectonic laboratory experiments that show how a specific plate tectonic configuration can explain the evolution of the Araripe Basin.
Luke N. J. Wedmore, Tess Turner, Juliet Biggs, Jack N. Williams, Henry M. Sichingabula, Christine Kabumbu, and Kawawa Banda
Solid Earth, 13, 1731–1753, https://doi.org/10.5194/se-13-1731-2022, https://doi.org/10.5194/se-13-1731-2022, 2022
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Mapping and compiling the attributes of faults capable of hosting earthquakes are important for the next generation of seismic hazard assessment. We document 18 active faults in the Luangwa Rift, Zambia, in an active fault database. These faults are between 9 and 207 km long offset Quaternary sediments, have scarps up to ~30 m high, and are capable of hosting earthquakes from Mw 5.8 to 8.1. We associate the Molaza Fault with surface ruptures from two unattributed M 6+ 20th century earthquakes.
Michał P. Michalak, Lesław Teper, Florian Wellmann, Jerzy Żaba, Krzysztof Gaidzik, Marcin Kostur, Yuriy P. Maystrenko, and Paulina Leonowicz
Solid Earth, 13, 1697–1720, https://doi.org/10.5194/se-13-1697-2022, https://doi.org/10.5194/se-13-1697-2022, 2022
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When characterizing geological/geophysical surfaces, various geometric attributes are calculated, such as dip angle (1D) or dip direction (2D). However, the boundaries between specific values may be subjective and without optimization significance, resulting from using default color palletes. This study proposes minimizing cosine distance among within-cluster observations to detect 3D anomalies. Our results suggest that the method holds promise for identification of megacylinders or megacones.
Erik M. Young, Christie D. Rowe, and James D. Kirkpatrick
Solid Earth, 13, 1607–1629, https://doi.org/10.5194/se-13-1607-2022, https://doi.org/10.5194/se-13-1607-2022, 2022
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Studying how earthquakes spread deep within the faults they originate from is crucial to improving our understanding of the earthquake process. We mapped preserved ancient earthquake surfaces that are now exposed in South Africa and studied their relationship with the shape and type of rocks surrounding them. We determined that these surfaces are not random and are instead associated with specific kinds of rocks and that their shape is linked to the evolution of the faults in which they occur.
Sivaji Lahiri, Kitty L. Milliken, Peter Vrolijk, Guillaume Desbois, and Janos L. Urai
Solid Earth, 13, 1513–1539, https://doi.org/10.5194/se-13-1513-2022, https://doi.org/10.5194/se-13-1513-2022, 2022
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Understanding the mechanism of mechanical compaction is important. Previous studies on mechanical compaction were mostly done by performing experiments. Studies on natural rocks are rare due to compositional heterogeneity of the sedimentary succession with depth. Due to remarkable similarity in composition and grain size, the Sumatra subduction complex provides a unique opportunity to study the micromechanism of mechanical compaction on natural samples.
Dongwon Lee, Nikolaos Karadimitriou, Matthias Ruf, and Holger Steeb
Solid Earth, 13, 1475–1494, https://doi.org/10.5194/se-13-1475-2022, https://doi.org/10.5194/se-13-1475-2022, 2022
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This research article focuses on filtering and segmentation methods employed in high-resolution µXRCT studies for crystalline rocks, bearing fractures, or fracture networks, of very small aperture. Specifically, we focus on the identification of artificially induced (via quenching) fractures in Carrara marble samples. Results from the same dataset from all five different methods adopted were produced and compared with each other in terms of their output quality and time efficiency.
Alberto Ceccato, Giulia Tartaglia, Marco Antonellini, and Giulio Viola
Solid Earth, 13, 1431–1453, https://doi.org/10.5194/se-13-1431-2022, https://doi.org/10.5194/se-13-1431-2022, 2022
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The Earth's surface is commonly characterized by the occurrence of fractures, which can be mapped, and their can be geometry quantified on digital representations of the surface at different scales of observation. Here we present a series of analytical and statistical tools, which can aid the quantification of fracture spatial distribution at different scales. In doing so, we can improve our understanding of how fracture geometry and geology affect fluid flow within the fractured Earth crust.
Giulio Viola, Giovanni Musumeci, Francesco Mazzarini, Lorenzo Tavazzani, Manuel Curzi, Espen Torgersen, Roelant van der Lelij, and Luca Aldega
Solid Earth, 13, 1327–1351, https://doi.org/10.5194/se-13-1327-2022, https://doi.org/10.5194/se-13-1327-2022, 2022
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A structural-geochronological approach helps to unravel the Zuccale Fault's architecture. By mapping its internal structure and dating some of its fault rocks, we constrained a deformation history lasting 20 Myr starting at ca. 22 Ma. Such long activity is recorded by now tightly juxtaposed brittle structural facies, i.e. different types of fault rocks. Our results also have implications on the regional evolution of the northern Apennines, of which the Zuccale Fault is an important structure.
Wan-Lin Hu
Solid Earth, 13, 1281–1290, https://doi.org/10.5194/se-13-1281-2022, https://doi.org/10.5194/se-13-1281-2022, 2022
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Having a seismic image is generally expected to enable us to better determine fault geometry and thus estimate geological slip rates accurately. However, the process of interpreting seismic images may introduce unintended uncertainties, which have not yet been widely discussed. Here, a case of a shear fault-bend fold in the frontal Himalaya is used to demonstrate how differences in interpretations can affect the following estimates of slip rates and dependent conclusions.
Manuel D. Menzel, Janos L. Urai, Estibalitz Ukar, Thierry Decrausaz, and Marguerite Godard
Solid Earth, 13, 1191–1218, https://doi.org/10.5194/se-13-1191-2022, https://doi.org/10.5194/se-13-1191-2022, 2022
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Mantle rocks can bind large quantities of carbon by reaction with CO2, but this capacity requires fluid pathways not to be clogged by carbonate. We studied mantle rocks from Oman to understand the mechanisms allowing their transformation into carbonate and quartz. Using advanced imaging techniques, we show that abundant veins were essential fluid pathways driving the reaction. Our results show that tectonic stress was important for fracture opening and a key ingredient for carbon fixation.
Jean-Baptiste P. Koehl, Steffen G. Bergh, and Arthur G. Sylvester
Solid Earth, 13, 1169–1190, https://doi.org/10.5194/se-13-1169-2022, https://doi.org/10.5194/se-13-1169-2022, 2022
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The San Andreas fault is a major active fault associated with ongoing earthquake sequences in southern California. The present study investigates the development of the Indio Hills area in the Coachella Valley along the main San Andreas fault and the Indio Hills fault. The Indio Hills area is located near an area with high ongoing earthquake activity (Brawley seismic zone), and, therefore, its recent tectonic evolution has implications for earthquake prediction.
Jin Lai, Dong Li, Yong Ai, Hongkun Liu, Deyang Cai, Kangjun Chen, Yuqiang Xie, and Guiwen Wang
Solid Earth, 13, 975–1002, https://doi.org/10.5194/se-13-975-2022, https://doi.org/10.5194/se-13-975-2022, 2022
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(1) Structural diagenesis analysis is performed on the ultra-deep tight sandstone. (2) Fracture and intergranular pores are related to the low in situ stress magnitudes. (3) Dissolution is associated with the presence of fracture.
Hamed Fazlikhani, Wolfgang Bauer, and Harald Stollhofen
Solid Earth, 13, 393–416, https://doi.org/10.5194/se-13-393-2022, https://doi.org/10.5194/se-13-393-2022, 2022
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Interpretation of newly acquired FRANKEN 2D seismic survey data in southeeastern Germany shows that upper Paleozoic low-grade metasedimentary rocks and possible nappe units are transported by Variscan shear zones to ca. 65 km west of the Franconian Fault System (FFS). We show that the locations of post-Variscan upper Carboniferous–Permian normal faults and associated graben and half-graben basins are controlled by the geometry of underlying Variscan shear zones.
Xiaodong Ma, Marian Hertrich, Florian Amann, Kai Bröker, Nima Gholizadeh Doonechaly, Valentin Gischig, Rebecca Hochreutener, Philipp Kästli, Hannes Krietsch, Michèle Marti, Barbara Nägeli, Morteza Nejati, Anne Obermann, Katrin Plenkers, Antonio P. Rinaldi, Alexis Shakas, Linus Villiger, Quinn Wenning, Alba Zappone, Falko Bethmann, Raymi Castilla, Francisco Seberto, Peter Meier, Thomas Driesner, Simon Loew, Hansruedi Maurer, Martin O. Saar, Stefan Wiemer, and Domenico Giardini
Solid Earth, 13, 301–322, https://doi.org/10.5194/se-13-301-2022, https://doi.org/10.5194/se-13-301-2022, 2022
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Questions on issues such as anthropogenic earthquakes and deep geothermal energy developments require a better understanding of the fractured rock. Experiments conducted at reduced scales but with higher-resolution observations can shed some light. To this end, the BedrettoLab was recently established in an existing tunnel in Ticino, Switzerland, with preliminary efforts to characterize realistic rock mass behavior at the hectometer scale.
Berit Schwichtenberg, Florian Fusseis, Ian B. Butler, and Edward Andò
Solid Earth, 13, 41–64, https://doi.org/10.5194/se-13-41-2022, https://doi.org/10.5194/se-13-41-2022, 2022
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Hydraulic rock properties such as porosity and permeability are relevant factors that have an impact on groundwater resources, geological repositories and fossil fuel reservoirs. We investigate the influence of chemical compaction upon the porosity evolution in salt–biotite mixtures and related transport length scales by conducting laboratory experiments in combination with 4-D analysis. Our observations invite a renewed discussion of the effect of sheet silicates on chemical compaction.
David Healy and Stephen Paul Hicks
Solid Earth, 13, 15–39, https://doi.org/10.5194/se-13-15-2022, https://doi.org/10.5194/se-13-15-2022, 2022
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The energy transition requires operations in faulted rocks. To manage the technical challenges and public concern over possible induced earthquakes, we need to quantify the risks. We calculate the probability of fault slip based on uncertain inputs, stresses, fluid pressures, and the mechanical properties of rocks in fault zones. Our examples highlight the specific gaps in our knowledge. Citizen science projects could produce useful data and include the public in the discussions about hazards.
Manuel I. de Paz-Álvarez, Thomas G. Blenkinsop, David M. Buchs, George E. Gibbons, and Lesley Cherns
Solid Earth, 13, 1–14, https://doi.org/10.5194/se-13-1-2022, https://doi.org/10.5194/se-13-1-2022, 2022
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We describe a virtual geological mapping course implemented in response to travelling and social restrictions derived from the ongoing COVID-19 pandemic. The course was designed to replicate a physical mapping exercise as closely as possible with the aid of real field data and photographs collected by the authors during previous years in the Cantabrian Zone (NW Spain). The course is delivered through Google Earth via a KMZ file with outcrop descriptions and links to GitHub-hosted photographs.
Yueyang Xia, Jacob Geersen, Dirk Klaeschen, Bo Ma, Dietrich Lange, Michael Riedel, Michael Schnabel, and Heidrun Kopp
Solid Earth, 12, 2467–2477, https://doi.org/10.5194/se-12-2467-2021, https://doi.org/10.5194/se-12-2467-2021, 2021
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The 2 June 1994 Java tsunami earthquake ruptured in a seismically quiet subduction zone and generated a larger-than-expected tsunami. Here, we re-process a seismic line across the rupture area. We show that a subducting seamount is located up-dip of the mainshock in a region that did not rupture during the earthquake. Seamount subduction modulates the topography of the marine forearc and acts as a seismic barrier in the 1994 earthquake rupture.
Steffen Abe and Hagen Deckert
Solid Earth, 12, 2407–2424, https://doi.org/10.5194/se-12-2407-2021, https://doi.org/10.5194/se-12-2407-2021, 2021
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We use numerical simulations and laboratory experiments on rock samples to investigate how stress conditions influence the geometry and roughness of fracture surfaces. The roughness of the surfaces was analyzed in terms of absolute roughness and scaling properties. The results show that the surfaces are self-affine but with different scaling properties between the numerical models and the real rock samples. Results suggest that stress conditions have little influence on the surface roughness.
Chao Deng, Rixiang Zhu, Jianhui Han, Yu Shu, Yuxiang Wu, Kefeng Hou, and Wei Long
Solid Earth, 12, 2327–2350, https://doi.org/10.5194/se-12-2327-2021, https://doi.org/10.5194/se-12-2327-2021, 2021
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This study uses seismic reflection data to interpret the geometric relationship and evolution of intra-basement and rift-related structures in the Enping sag in the northern South China Sea. Our observations suggest the primary control of pre-existing thrust faults is the formation of low-angle normal faults, with possible help from low-friction materials, and the significant role of pre-existing basement thrust faults in fault geometry, paleotopography, and syn-rift stratigraphy of rift basins.
Sonia Yeung, Marnie Forster, Emmanuel Skourtsos, and Gordon Lister
Solid Earth, 12, 2255–2275, https://doi.org/10.5194/se-12-2255-2021, https://doi.org/10.5194/se-12-2255-2021, 2021
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We do not know when the ancient Tethys Ocean lithosphere began to founder, but one clue can be found in subduction accreted tectonic slices, including Gondwanan basement terranes on the island of Ios, Cyclades, Greece. We propose a 250–300 km southwards jump of the subduction megathrust with a period of flat-slab subduction followed by slab break-off. The initiation and its subsequent rollback of a new subduction zone would explain the onset of Oligo–Miocene extension and accompanying magmatism.
Rahul Prabhakaran, Giovanni Bertotti, Janos Urai, and David Smeulders
Solid Earth, 12, 2159–2209, https://doi.org/10.5194/se-12-2159-2021, https://doi.org/10.5194/se-12-2159-2021, 2021
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Rock fractures are organized as networks with spatially varying arrangements. Due to networks' influence on bulk rock behaviour, it is important to quantify network spatial variation. We utilize an approach where fracture networks are treated as spatial graphs. By combining graph similarity measures with clustering techniques, spatial clusters within large-scale fracture networks are identified and organized hierarchically. The method is validated on a dataset with nearly 300 000 fractures.
Olivier Lacombe, Nicolas E. Beaudoin, Guilhem Hoareau, Aurélie Labeur, Christophe Pecheyran, and Jean-Paul Callot
Solid Earth, 12, 2145–2157, https://doi.org/10.5194/se-12-2145-2021, https://doi.org/10.5194/se-12-2145-2021, 2021
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This paper aims to illustrate how the timing and duration of contractional deformation associated with folding in orogenic forelands can be constrained by the dating of brittle mesostructures observed in folded strata. The study combines new and already published absolute ages of fractures to provide, for the first time, an educated discussion about the factors controlling the duration of the sequence of deformation encompassing layer-parallel shortening, fold growth, and late fold tightening.
Vincent Famin, Hugues Raimbourg, Muriel Andreani, and Anne-Marie Boullier
Solid Earth, 12, 2067–2085, https://doi.org/10.5194/se-12-2067-2021, https://doi.org/10.5194/se-12-2067-2021, 2021
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Sediments accumulated in accretionary prisms are deformed by the compression imposed by plate subduction. Here we show that deformation of the sediments transforms some minerals in them. We suggest that these mineral transformations are due to the proliferation of microorganisms boosted by deformation. Deformation-enhanced microbial proliferation may change our view of sedimentary and tectonic processes in subduction zones.
Marta Adamuszek, Dan M. Tămaş, Jessica Barabasch, and Janos L. Urai
Solid Earth, 12, 2041–2065, https://doi.org/10.5194/se-12-2041-2021, https://doi.org/10.5194/se-12-2041-2021, 2021
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We analyse folded multilayer sequences in the Ocnele Mari salt mine (Romania) to gain insight into the long-term rheological behaviour of rock salt. Our results indicate the large role of even a small number of impurities in the rock salt for its effective mechanical behaviour. We demonstrate how the development of folds that occur at various scales can be used to constrain the viscosity ratio in the deformed multilayer sequence.
Dario Zampieri, Paola Vannoli, and Pierfrancesco Burrato
Solid Earth, 12, 1967–1986, https://doi.org/10.5194/se-12-1967-2021, https://doi.org/10.5194/se-12-1967-2021, 2021
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The long-lived Schio-Vicenza Fault System is a major shear zone cross-cutting the foreland and the thrust belt of the eastern southern Alps. We review 150 years of scientific works and explain its activity and kinematics, characterized by sinistral and dextral transcurrent motion along its southern and northern sections, respectively, by a geodynamic model that has the Adria indenter as the main actor and coherently reconciles the available geological and geophysical evidence collected so far.
Vincent F. Verwater, Eline Le Breton, Mark R. Handy, Vincenzo Picotti, Azam Jozi Najafabadi, and Christian Haberland
Solid Earth, 12, 1309–1334, https://doi.org/10.5194/se-12-1309-2021, https://doi.org/10.5194/se-12-1309-2021, 2021
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Balancing along geological cross sections reveals that the Giudicarie Belt comprises two kinematic domains. The SW domain accommodated at least ~ 18 km Late Oligocene to Early Miocene shortening. Since the Middle Miocene, the SW domain experienced at least ~ 12–22 km shortening, whereas the NE domain underwent at least ~ 25–35 km. Together, these domains contributed to ~ 40–47 km of sinistral offset of the Periadriatic Fault along the Northern Giudicarie Fault since the Late Oligocene.
Emma A. H. Michie, Mark J. Mulrooney, and Alvar Braathen
Solid Earth, 12, 1259–1286, https://doi.org/10.5194/se-12-1259-2021, https://doi.org/10.5194/se-12-1259-2021, 2021
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Generating an accurate model of the subsurface is crucial when assessing a site for CO2 storage, particularly for a fault-bound storage site that may act as a seal or could reactivate upon CO2 injection. However, we have shown how picking strategy, i.e. line spacing, chosen to create the model significantly influences any subsequent fault analyses but is surprisingly rarely discussed. This analysis has been performed on the Vette Fault bounding the Smeaheia potential CO2 storage site.
Stefano Urbani, Guido Giordano, Federico Lucci, Federico Rossetti, and Gerardo Carrasco-Núñez
Solid Earth, 12, 1111–1124, https://doi.org/10.5194/se-12-1111-2021, https://doi.org/10.5194/se-12-1111-2021, 2021
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Structural studies in active calderas have a key role in the exploration of geothermal systems. We reply in detail to the points raised by the comment of Norini and Groppelli (2020), strengthening the relevance of our structural fieldwork for geothermal exploration and exploitation in active caldera geothermal systems including the Los Humeros caldera.
Jakob Bolz and Jonas Kley
Solid Earth, 12, 1005–1024, https://doi.org/10.5194/se-12-1005-2021, https://doi.org/10.5194/se-12-1005-2021, 2021
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To assess the role smaller graben structures near the southern edge of the Central European Basin System play in the basin’s overall deformational history, we take advantage of a feature found on some of these structures, where slivers from older rock units appear along the graben's main fault, surrounded on both sides by younger strata. The implications for the geometry of the fault provide a substantially improved estimate for the magnitude of normal and thrust motion along the fault system.
Domingo G. A. M. Aerden, Alejandro Ruiz-Fuentes, Mohammad Sayab, and Aidan Forde
Solid Earth, 12, 971–992, https://doi.org/10.5194/se-12-971-2021, https://doi.org/10.5194/se-12-971-2021, 2021
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We studied the geometry of foliations and microfolds preserved within metamorphic garnet crystals using X-ray tomography. The studied rocks are blueschists from Ile de Groix formed during Late Devonian subduction of Gondwana under Armorica. Several sets of differently oriented microfabrics were found recording variations in the direction of subduction. Comparison with similar data for Iberia supports that Iberia rotated only 10–20° during the Cretaceous opening of the North Atlantic.
Matteo Demurtas, Steven A.F. Smith, Elena Spagnuolo, and Giulio Di Toro
Solid Earth, 12, 595–612, https://doi.org/10.5194/se-12-595-2021, https://doi.org/10.5194/se-12-595-2021, 2021
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We performed shear experiments on calcite–dolomite gouge mixtures to better understand the behaviour of carbonates during sub-seismic to seismic deformation in the shallow crust. The development of a foliation in the gouge was only restricted to coseismic sliding, whereas fluidisation occurred over a wide range of slip velocities (sub-seismic to coseismic) in the presence of water. These observations will contribute to a better interpretation of the rock record.
James Gilgannon, Marius Waldvogel, Thomas Poulet, Florian Fusseis, Alfons Berger, Auke Barnhoorn, and Marco Herwegh
Solid Earth, 12, 405–420, https://doi.org/10.5194/se-12-405-2021, https://doi.org/10.5194/se-12-405-2021, 2021
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Using experiments that simulate deep tectonic interfaces, known as viscous shear zones, we found that these zones spontaneously develop periodic sheets of small pores. The presence of porous layers in deep rocks undergoing tectonic deformation is significant because it requires a change to the current model of how the Earth deforms. Emergent porous layers in viscous rocks will focus mineralising fluids and could lead to the seismic failure of rocks that are never supposed to have this occur.
Jef Deckers, Bernd Rombaut, Koen Van Noten, and Kris Vanneste
Solid Earth, 12, 345–361, https://doi.org/10.5194/se-12-345-2021, https://doi.org/10.5194/se-12-345-2021, 2021
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This study shows the presence of two structural domains in the western border fault system of the Roer Valley graben. These domains, dominated by NW–SE-striking faults, displayed distinctly different strain distributions during both Late Cretaceous compression and Cenozoic extension. The southern domain is characterized by narrow, localized faulting, while the northern domain is characterized by wide, distributed faulting. The non-colinear WNW–ESE Grote Brogel fault links both domains.
José Piquer, Orlando Rivera, Gonzalo Yáñez, and Nicolás Oyarzún
Solid Earth, 12, 253–273, https://doi.org/10.5194/se-12-253-2021, https://doi.org/10.5194/se-12-253-2021, 2021
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A proper recognition of deep, long-lived fault systems is very important for society. They can produce potentially dangerous earthquakes. They can also act as pathways for magmas and hydrothermal fluids, leading to the formation of volcanoes, geothermal systems and mineral deposits. However, the manifestations of these very old faults in the present-day surface can be very subtle. Here, we present a detailed, multi-disciplinary study of a fault system of this type in the Andes of central Chile.
Antonin Bilau, Yann Rolland, Stéphane Schwartz, Nicolas Godeau, Abel Guihou, Pierre Deschamps, Benjamin Brigaud, Aurélie Noret, Thierry Dumont, and Cécile Gautheron
Solid Earth, 12, 237–251, https://doi.org/10.5194/se-12-237-2021, https://doi.org/10.5194/se-12-237-2021, 2021
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As a result of the collision between the European and Apulian plates, the Alps have experienced several evolutionary stages. The Penninic frontal thrust (PFT) (major thrust) was associated with compression, and now seismic studies show ongoing extensional activity. Calcite mineralization associated with shortening and extensional structures was sampled. The last deformation stages are dated by U–Pb on calcite at ~ 3.5 and ~ 2.5 Ma. Isotope analysis evidences deep crustal fluid mobilization.
Cited articles
Adamuszek, M., Schmid, D. W., and Dabrowski, M.: Fold geometry toolbox –
Automated determination of fold shape, shortening, and material properties,
J. Struct. Geol., 33, 1406–1416, https://doi.org/10.1016/j.jsg.2011.06.003,
2011.
Adamuszek, M., Tămaş, D. M., Barabasch, J., and Urai, J. L.: Rheological stratification in impure rock salt during long-term creep: morphology, microstructure, and numerical models of multilayer folds in the Ocnele Mari salt mine, Romania, Solid Earth, 12, 2041–2065, https://doi.org/10.5194/se-12-2041-2021, 2021.
Albrecht, H., Hunsche, U., and Schulze, O.: Results from the application of the laboratory test program for mapping homogeneous parts in the Gorleben salt dome, 10th national rock mechanics symposium in Aachen, November 1992; Geotechnik-Sonderheft 1993, 155–158, Glückauf, Essen,
1993.
Barabasch, J., Urai, J. L., Raith, A. F., and de Jager, J.: The early life
of a salt giant: 3D seismic study on syntectonic Zechstein salt and stringer
deposition on the Friesland Platform, Netherlands, Z. Dtsch. Geol. Ges.,
170, 273–288, https://doi.org/10.1127/zdgg/2019/0186, 2019.
Barabasch, J., Schmatz, J., Klaver, J., Schwedt, A., and Urai, J. L.: Supplementary material of Kristallbrockensalt microstructures of the Zechstein-2 rock salt from the Northern Netherlands, Zenodo [data set], https://doi.org/10.5281/zenodo.6839080, 2022.
Baumann, T. S., Kaus, B. J. P., and Popov, A. A.: Deformation and stresses
related to the Gorleben salt structure: Insights from 3D numerical models,
in: Mechanical behavior of salt IX, edited by: Fahland, S., Hammer, J.,
Hansen, F., Heusermann, S., Lux, K.-H., and Minkley, W., BGR, Hannover,
Germany, 597–609, 2018.
Bérest, P., Béraud, J. F., Brouard, B., Blum, P. A., Charpentier, J.
P., de Greef, V., Gharbi, H., and Valès, F.: Very slow creep tests on
salt samples, EPJ Web of Conferences, 6, 22002,
https://doi.org/10.1051/epjconf/20100622002, 2010.
Bérest, P., Gharbi, H., Brouard, B., Brückner, D., DeVries, K.,
Hévin, G., Hofer, G., Spiers, C., and Urai, J. L.: Very Slow Creep Tests
on Salt Samples, Rock. Mech. Rock. Eng., 52, 2917–2934,
https://doi.org/10.1007/s00603-019-01778-9, 2019.
Bons, P. D. and Urai, J. L.: Experimental deformation of two-phase rock
analogues, Mater. Sci. Eng, 175, 221–229,
https://doi.org/10.1016/0921-5093(94)91061-8, 1994.
Bräuer, V., Eickenmeier, R., Eisenburger, D., Grissemann, C., Hesser,
J., Heusermann, S., Kaiser, D., Nipp, H.-K., Nowak, T., Plischke, I.,
Schnier, H., Schulze, O., Sönnke, J., and Weber, J. R.: Description of
the Gorleben site part 4: Geotechnical exploration of the Gorleben salt
dome, Bundesanstalt für Geowissenschaften und Rohstoffe (BGR), Hannover, Germany, ISBN 978-3-9814108-0-8, 2011.
Brouard, B. and Bérest, P.: A tentative classification of salts
according to their creep properties, SMRI Spring 1998 Meeting, 19–22 April
1998, New Orleans, Louisiana, USA, 18–38, 1998.
Brouard, B., Bérest, P., Héas, J.-Y., Fourmaintraux, D., de
Laguérie, P., and You, T.: An in situ creep test in advance of
abandoning a salt cavern, SMRI Fall 2004 Technical Meeting, 3–5 October
2004, Berlin, Germany, 45–69, 2004.
Buijze, L., Heege, J. T., and Wassing, B.: Finite Element modeling of
natural sealing of wellbores in salt using advanced, laboratory-based salt
creep laws, in: The Mechanical Behavior of Salt X, edited by: de Bresser, J. H. P., Drury, M. R., Fokker, P. A., Gazzani, M., Hangx, S. J. T., Niemeijer, A. R., and Spiers, C. J., CRC Press, ISBN 978-1-032-28220-6, 2022.
Carter, N. L. and Hansen, F. D.: Creep of rocksalt, Tectonophysics, 92,
275–333, https://doi.org/10.1016/0040-1951(83)90200-7, 1983.
Carter, N. L., Hansen, F. D., and Senseny, P. E.: Stress magnitudes in
natural rock salt, J. Geophys. Res., 87, 9289,
https://doi.org/10.1029/JB087iB11p09289, 1982.
Carter, N. L., Horseman, S. T., Russell, J. E., and Handin, J.: Rheology of
rocksalt, J. Struct. Geol., 15, 1257–1271,
https://doi.org/10.1016/0191-8141(93)90168-A, 1993.
Chemia, Z., Schmeling, H., and Koyi, H.: The effect of the salt viscosity on
future evolution of the Gorleben salt diapir, Germany, Tectonophysics, 473,
446–456, https://doi.org/10.1016/j.tecto.2009.03.027, 2009.
Czapowski, G.: Sedimentary facies in the oldest rock salt (Na1) of the Leba elevation (Northern Poland), in: The Zechstein Facies in Europe: Lecture Notes in Earth Sciences, edited by: Peryt, T. M., Springer, Berlin, 10, 207–224, 1987.
De Bresser, J. H. P., Peach, C. J., Reijs, J. P. J., and Spiers, C. J.: On
dynamic recrystallization during solid state flow: Effects of stress and
temperature, Geophys. Res. Lett., 25, 3457–3460,
https://doi.org/10.1029/98GL02690, 1998.
De Bresser, J. H. P., Ter Heege, J. H., and Spiers, C. J.: Grain size
reduction by dynamic recrystallization: can it result in major rheological
weakening?, Int. J. Earth Sciences (Geol. Rundsch.), 90, 28–45,
https://doi.org/10.1007/s005310000149, 2001.
Desbois, G., Závada, P., Schléder, Z., and Urai, J. L.: Deformation
and recrystallization mechanisms in actively extruding salt fountain:
Microstructural evidence for a switch in deformation mechanisms with
increased availability of meteoric water and decreased grain size (Qum Kuh,
central Iran), J. Struct. Geol., 32, 580–594,
https://doi.org/10.1016/j.jsg.2010.03.005, 2010.
Desbois, G., Urai, J. L., Schmatz, J., Závada, P., and de Bresser, J. H.
P.: The distribution of fluids in natural rock salt to understand
deformation mechanism, in: Mechanical behaviour of Salt VII, edited by:
Bérest, P., Ghoreychi, M., Hadj-Hassen, F., and Tijani, M., Taylor &
Francis Group, London, United Kingdom, 3–12, 2012.
Dooley, T. P., Jackson, M. P. A., Jackson, C. A.-L., Hudec, M. R., and
Rodriguez, C. R.: Enigmatic structures within salt walls of the Santos
Basin – Part 2: Mechanical explanation from physical modelling, J. Struct.
Geol., 75, 163–187, https://doi.org/10.1016/j.jsg.2015.01.009, 2015.
Drury, M. R. and Urai, J. L.: Deformation-related recrystallization
processes, Tectonophysics, 172, 235–253,
https://doi.org/10.1016/0040-1951(90)90033-5, 1990.
Eickemeier, R., Beese, S., Maniatis, G., and Fahland, S.:
Sensitivitätsstudien zur gebirgsmechanischen Beurteilung der
Integrität der Salzstockbarriere im Südfeld Bartensleben – Teil 5,
Bundesanstalt für Geowissenschaften und Rohstoffe (BGR), Hannover, Germany, 2021.
Fiduk, J. C. and Rowan, M. G.: Analysis of folding and deformation within
layered evaporites in Blocks BM-S-8 & -9, Santos Basin, Brazil, in: Salt
tectonics, sediments and prospectivity, edited by: Alsop, G. I., Archer, S.
G., Hartley, A. J., Grant, N. T., and Hodgkinson, R., The Geological
Society, London, United Kingdom, 471–487, https://doi.org/10.1144/SP363.22,
2012.
Garcia Celma, A., Urai, J. L., and Spiers, C. J.: A laboratory investigation
into the interaction of recrystallization and radiation damage effects in
polycrystalline salt rocks, Office for Official Publications of the European
Communities, Luxembourg, 125 pp., 1988.
Geluk, M. C.: Late Permian (Zechstein) carbonate-facies maps, the
Netherlands, Geol. Mijnbouw, 79, 17–27,
https://doi.org/10.1017/S0016774600021545, 2000.
Geluk, M. C., Paar, W. A., and Fokker, P. A.: Salt, in: Geology of the
Netherlands, edited by: Wong, T. E., Batjes, D. A. J., and de Jager, J.,
Royal Netherlands Academy of Arts and Sciences, Amsterdam, Netherlands,
283–294, 2007.
Granado, P., Ruh, J. B., Santolaria, P., Strauss, P., and Muñoz, J. A.:
Stretching and Contraction of Extensional Basins With Pre-Rift Salt: A
Numerical Modeling Approach, Front. Earth Sci., 9, 1–24, https://doi.org/10.3389/feart.2021.648937, 2021.
Hampel, A.: Verbundprojekt: Vergleich aktueller Stoffgesetze und
Vorgehensweisen anhand von Modellberechnungen zum thermo-mechanischen
Verhalten und zur Verheilung von Steinsalz – Ergebnisbericht zum
Teilvorhaben 1, Projektträger Karlsruhe, Wassertechnologie und
Entsorgung (PTKA-WTE), Karlsruher Institut für Technologie (KIT), Mainz,
Germany, 2016.
Hampel, A., Schulze, O., Heemann, U., Zetsche, F., Günther, R.-M.,
Salzer, K., Minkley, W., Hou, M. Z., Wolters, R., Düsterloh, U., Zapf,
D., Rokahr, R. B., and Pudewills, A.: BMBF-Verbundvorhaben: Die Modellierung
des mechanischen Verhaltens von Steinsalz: Vergleich aktueller Stoffgesetze
und Vorgehensweisen. Synthesebericht, Projektträger Forschungszentrum
Karlsruhe (PTKA), Bereich Wassertechnologie und Entsorgung (WTE), Karlsruhe,
Germany, 2007.
Heard, H. C. and Ryerson, F. J.: Effect of cation impurities on steady-state
flow of salt, in: Mineral and rock deformation: Laboratory studies, edited
by: Hobbs, B. E. and Heard, H. C., American Geophysical Union, Washington,
D.C., USA, 99–115, https://doi.org/10.1029/GM036p0099, 1986.
Hudleston, P. J. and Treagus, S. H.: Information from folds: A review, J.
Struct. Geol., 32, 2042–2071, https://doi.org/10.1016/j.jsg.2010.08.011,
2010.
Hunsche, U. and Hampel, A.: Rock salt – the mechanical properties of the
host rock material for a radioactive waste repository, Eng. Geol., 52,
271–291, https://doi.org/10.1016/S0013-7952(99)00011-3, 1999.
Hunsche, U., Schulze, O., Walter, F., and Plischke, I.: Thermomechanisches
Verhalten von Salzgestein, report, Bundesanstalt für Geowissenschaften und Rohstoffe (BGR), Hannover, Germany, 2003.
Jackson, M. P. A. and Hudec, M. R.: Salt Tectonics: Principles and Practice,
Cambridge University Press, https://doi.org/10.1017/9781139003988, 2017.
Jackson, M. P. A., Vendeville, B. C., and Schultz-Ela, D. D.: Structural
dynamics of salt systems, Annu. Rev. Earth Planet. Sci., 22, 93–117,
https://doi.org/10.1146/annurev.ea.22.050194.000521, 1994.
Jessell, M. W., Bons, P. D., Griera, A., Evans, L. A., and Wilson, C. J. L.:
A tale of two viscosities, J. Struct. Geol., 31, 719–736,
https://doi.org/10.1016/j.jsg.2009.04.010, 2009.
Juez-Larré, J., van Gessel, S., Dalman, R., Remmelts, G., and
Groenenberg, R.: Assessment of underground energy storage potential to
support the energy transition in the Netherlands, First Break, 37, 57–66,
https://doi.org/10.3997/1365-2397.n0039, 2019.
Kaart boringen | NLOG: https://www.nlog.nl/kaart-boringen, last
access: 15 February 2022.
Komoróczi, A., Abe, S., and Urai, J. L.: Meshless numerical modeling of
brittle–viscous deformation: first results on boudinage and hydrofracturing
using a coupling of discrete element method (DEM) and smoothed particle
hydrodynamics (SPH), Comput. Geosci., 17, 373–390,
https://doi.org/10.1007/s10596-012-9335-x, 2013.
Kukla, P. A., Pechnig, R., and Urai, J. L.: Sichtung und Bewertung der
Standortdaten Gorleben: Bericht zum Arbeitspaket 2: Vorläufige
Sicherheitsanalyse für den Standort Gorleben, Gesellschaft für
Anlagen- und Reaktorsicherheit (GRS) mbH, Cologne, Germany, ISBN 978-3-939355-52-6, 2011.
Kukla, P. A., Urai, J. L., Raith, A., Li, S., Barabasch, J., and Strozyk,
F.: The European Zechstein Salt Giant – Trusheim and Beyond, 37th Annual
GCSSEPM Foundation Perkins-Rosen Research Conference, 3–6 December 2019, Huston, Texas, edited by: Fiduk, J. C. and Rosen, N. C., http://www.gcssepm.org/conference/2019_Program_Abstracts.pdf
(last access: 7 February 2023), 2019.
Küster, Y.: Bromide characteristics and deformation mechanisms of
naturally deformed rock salt of the German Zechstein Basin, Dissertation,
Georg-August-Universität, Göttingen, Germany, 221 pp., https://doi.org/10.53846/goediss-2396, 2011.
Küster, Y., Leiss, B., and Schramm, M.: Structural characteristics of
the halite fabric type `Kristallbrocken' from the Zechstein Basin with
regard to its development, Int. J. Earth Sci., 99, 505–526,
https://doi.org/10.1007/s00531-008-0399-8, 2008.
Küster, Y., Schramm, M., Bornemann, O., and Leiss, B.: Bromide
distribution characteristics of different Zechstein 2 rock salt sequences of
the Southern Permian Basin: a comparison between bedded and domal salts,
Sedimentology, 56, 1368–1391,
https://doi.org/10.1111/j.1365-3091.2008.01038.x, 2009.
Küster, Y., Schramm, M., and Leiss, B.: Compositional and
microstructural characterisation of solid inclusions in the laminated halite
type “Kristallbrocken” with regard to its formation in the Central
European Zechstein Basin, Z. Dt. Ges. Geowiss., 162, 277–294,
https://doi.org/10.1127/1860-1804/2011/0162-0277, 2011.
Laier, T., Kockel, F., Geluk, M. C., Pokorsky, J., and Lott, G.K.: Section A
(Geology), in: NW European Gas Atlas, edited by: Lokhorst, A., NITG-TNO,
Haarlem, ISBN 90-72869-60-5, 1998.
Leitner, C., Neubauer, F., Urai, J. L., and Schoenherr, J.: Structure and
evolution of a rocksalt-mudrock-tectonite: The haselgebirge in the Northern
Calcareous Alps, J. Struct. Geol., 33, 970–984,
https://doi.org/10.1016/j.jsg.2011.02.008, 2011.
Linckens, J., Zulauf, G., and Hammer, J.: Experimental deformation of
coarse-grained rock salt to high strain, J. Geophys. Res.-Sol. Ea., 121, 6150–6171, https://doi.org/10.1002/2016JB012890, 2016.
Liu, W., Völkner, E., Minkley, W., and Popp, T.: Zusammenstellung der
Materialparameter für THM-Modellberechnungen: Ergebnisse aus dem
Vorhaben KOSINA, report, Bundesanstalt für Geowissenschaften und Rohstoffe (BGR), Hannover, Germany, 2017.
Löffler, J.: Zur Genese der Augensalze im Zechstein der Deutschen
Demokratischen Republik, Z. Angew. Geol., 11, 583–589,
https://doi.org/10.1515/9783112558201-006, 1962.
Lopez-Sanchez, M. A. and Llana-Fúnez, S.: An evaluation of different measures of dynamically recrystallized grain size for paleopiezometry or paleowattometry studies, Solid Earth, 6, 475–495, https://doi.org/10.5194/se-6-475-2015, 2015.
Macente, A., Fusseis, F., Butler, I. B., Tudisco, E., Hall, S. A., and
Andò, E.: 4D porosity evolution during pressure-solution of NaCl in the
presence of phyllosilicates, Earth Planet. Sci. Lett., 502, 115–125,
https://doi.org/10.1016/j.epsl.2018.08.032, 2018.
Means, W. D. and Ree, J. H.: Seven types of subgrain boundaries in octachloropropane, J. Struct. Geol., 10, 765–770, https://doi.org/10.1016/0191-8141(88)90083-1, 1988.
Pape, T., Michalzik, D., and Bornemann, O.: Chevronkristalle im
Kristallbrockensalz (Zechstein 2) des Salzstocks Gorleben –
Primärgefüge salinarer Flachwassersedimentation im Zechsteinbecken,
Z. Dt. Ges. Geowiss., 115–129, https://doi.org/10.1127/zdgg/153/2002/115,
2002.
Peach, C. J., Spiers, C. J., and Trimby, P. W.: Effect of confining pressure
on dilatation, recrystallization, and flow of rock salt at 150 ∘C,
J. Geophys. Res., 106, 13315–13328, https://doi.org/10.1029/2000JB900300,
2001.
Peel, F. J.: The engines of gravity-driven movement on passive margins:
Quantifying the relative contribution of spreading vs. gravity sliding
mechanisms, Tectonophysics, 633, 126–142,
https://doi.org/10.1016/j.tecto.2014.06.023, 2014.
Poirier, J.-P.: Creep of Crystals: High-Temperature Deformation Processes in
Metals, Ceramics and Minerals, 1st edn., Cambridge University Press,
https://doi.org/10.1017/CBO9780511564451, 1985.
Popp, T.: Eigenschaften und Potential stratiformer Salz-Formationen für
die Endlagerung hochradioaktiver Abfälle, report, Institut für
Gebirgsmechanik IfG, Leipzig, Germany, 2022.
Popp, T. and Hansen, F. D.: Creep at low deviatoric stress, in: Proceedings
of the 8th US/German workshop on salt repository research, design, and
operation, edited by: Hansen, F. D., Steininger, W., Bollingerfehr, W.,
Kuhlman, K., and Dunagan, S., Sandia National Laboratories, Albuquerque, New
Mexico, USA, 21–24, 2018.
Popp, T., Kern, H., and Schulze, O.: Lithologische Variabilität der petrophysikalischen und mineralogisch-gefügekundlichen Eigenschaften des älteren Steinsalzes (z2) aus dem Salzstock Gorleben, Meyniana, 51, 55–75, 1999.
Richter-Bernburg, G.: Über salinare Sedimentation, Z. Dt. Ges. Geowiss.,
105, 593–645, 1953.
Rowan, M. and Krzywiec, P.: The Szamotuły salt diapir and Mid-Polish
Trough: Decoupling during both Triassic-Jurassic rifting and Alpine
inversion, Interpretation, 2, SM1–SM18, https://doi.org/10.1190/INT-2014-0028.1, 2014.
Rowan, M. G., Urai, J. L., Fiduk, J. C., and Kukla, P. A.: Deformation of intrasalt competent layers in different modes of salt tectonics, Solid Earth, 10, 987–1013, https://doi.org/10.5194/se-10-987-2019, 2019.
Sadler, M.: The distribution and morphology of grain boundary fluids in
natural rock salt, MSc, RWTH Aachen University, 2012.
Schenk, O. and Urai, J. L.: Microstructural evolution and grain boundary
structure during static recrystallization in synthetic polycrystals of
sodium chloride containing saturated brine, Contrib. Mineral. Petrol., 146,
671–682, https://doi.org/10.1007/s00410-003-0522-6, 2004.
Schenk, O., Urai, J. L., and Piazolo, S.: Structure of grain boundaries in
wet, synthetic polycrystalline, statically recrystallizing halite – evidence
from cryo-SEM observations, Geofluids, 6, 93–104,
https://doi.org/10.1111/j.1468-8123.2006.00134.x, 2006.
Schindelin, J., Arganda-Carreras, I., Frise, E., Kaynig, V., Longair, M.,
Pietzsch, T., Preibisch, S., Rueden, C., Saalfeld, S., Schmid, B., Tinevez,
J.-Y., White, D. J., Hartenstein, V., Eliceiri, K., Tomancak, P., and
Cardona, A.: Fiji: an open-source platform for biological-image analysis,
Nat. Methods, 9, 676–682, https://doi.org/10.1038/nmeth.2019, 2012.
Schléder, Z. and Urai, J. L.: Microstructural evolution of
deformation-modified primary halite from the Middle Triassic Röt
Formation at Hengelo, The Netherlands, Int. J. Earth Sci. (Geol. Rundsch.), 94,
941–955, https://doi.org/10.1007/s00531-005-0503-2, 2005.
Schléder, Z. and Urai, J. L.: Deformation and recrystallization
mechanisms in mylonitic shear zones in naturally deformed extrusive
Eocene–Oligocene rocksalt from Eyvanekey plateau and Garmsar hills (central
Iran), J. Struct. Geol., 29, 241–255,
https://doi.org/10.1016/j.jsg.2006.08.014, 2007.
Schmalholz, S. M. and Mancktelow, N. S.: Folding and necking across the scales: a review of theoretical and experimental results and their applications, Solid Earth, 7, 1417–1465, https://doi.org/10.5194/se-7-1417-2016, 2016.
Schmalholz, S. M. and Podladchikov, Y. Yu.: Strain and competence contrast
estimation from fold shape, Tectonophysics, 340, 195–213,
https://doi.org/10.1016/S0040-1951(01)00151-2, 2001.
Schmatz, J., Schenk, O., and Urai, J. L.: The interaction of migrating grain
boundaries with fluid inclusions in rock analogues: the effect of wetting
angle and fluid inclusion velocity, Contrib. Mineral. Petrol., 162, 193–208,
https://doi.org/10.1007/s00410-010-0590-3, 2011.
Schultz-Ela, D. D., Jackson, M. P. A., and Vendeville, B. C.: Mechanics of
active salt diapirism, Tectonophysics, 228, 275–312,
https://doi.org/10.1016/0040-1951(93)90345-K, 1993.
Schwichtenberg, B., Fusseis, F., Butler, I. B., and Andò, E.: Biotite supports long-range diffusive transport in dissolution–precipitation creep in halite through small porosity fluctuations, Solid Earth, 13, 41–64, https://doi.org/10.5194/se-13-41-2022, 2022.
Seidl, E.: Die permische salzlagerstätte im Graf Moltke schalcht und in
der umgebung von Schönebeck a. d. Elbe: Beziehung zwischen mechanismus
der gebirgsbildung und innerer umformung der salzlagerstätte,
Königlich Preußische Geologische Landesanstalt, Berlin, Germany, 104
pp., 1914.
Simon, P.: Stratigraphie und Bromgehalt des Staßfurt-Steinsalzes
(Zechstein 2) im hannoverschen Kalisalzbergbaugebiet, Geol. Jhrbch,
90, 67–126, 1972.
Spiers, C. J. and Carter, N. L.: Microphysics of rocksalt flow in nature,
in: 4th Conference on the Mechanical Behavior of Salt, edited by: Aubertin,
M. and Hardy, Jr., H. R., Trans Tech Publications, Clausthal-Zellerfeld,
Germany, 115–128, 1998.
Spiers, C. J., Urai, J. L., Lister, G. S., Boland, J. N., and Zwart, H. J.:
The influence of fluid-rock interaction on the rheology of salt rock,
Commission of the European Communities, Luxembourg, EUR 10399 EN, ISBN 92-825-6214-X, 1986.
Spiers, C. J., Schutjens, P. M. T. M., Brzesowsky, R. H., Peach, C. J.,
Liezenberg, J. L., and Zwart, H. J.: Experimental determination of
constitutive parameters governing creep of rocksalt by pressure solution,
in: Deformation mechanisms, rheology and tectonics, edited by: Knipe, R. J.
and Rutter, E. H., The Geological Society, London, United Kingdom, 215–227,
https://doi.org/10.1144/GSL.SP.1990.054.01.21, 1990.
Strozyk, F., Urai, J. L., van Gent, H., de Keijzer, M., and Kukla, P. A.:
Regional variations in the structure of the Permian Zechstein 3 intrasalt
stringer in the northern Netherlands: 3D seismic interpretation and
implications for salt tectonic evolution, Interpretation, 2, SM101–SM117,
https://doi.org/10.1190/INT-2014-0037.1, 2014.
Talbot, C. J.: Fold trains in a glacier of salt in southern Iran, J. Struct.
Geol., 1, 5–18, https://doi.org/10.1016/0191-8141(79)90017-8, 1979.
Talbot, C. J. and Aftabi, P.: Geology and models of salt extrusion at Qum
Kuh, central Iran, J. Geol. Soc., London, 161, 321–334,
https://doi.org/10.1144/0016-764903-102, 2004.
Tămaṡ, D. M., Tăma?, A., Barabasch, J., Rowan, M. G., Schléder,
Z., Krézsek, C., and Urai, J. L.: Low-Angle Shear Within the Exposed
Mânzăleṡti Diapir, Romania: Salt Decapitation in the Eastern
Carpathians Fold-and-Thrust Belt, Tectonics, 40, e2021TC006850,
https://doi.org/10.1029/2021TC006850, 2021.
Ter Heege, J. H., De Bresser, J. H. P., and Spiers, C. J.: Dynamic
recrystallization of wet synthetic polycrystalline halite: dependence of
grain size distribution on flow stress, temperature and strain,
Tectonophysics, 396, 35–57, https://doi.org/10.1016/j.tecto.2004.10.002,
2005a.
Ter Heege, J. H., de Bresser, J. H. P., and Spiers, C. J.: Rheological
behaviour of synthetic rocksalt: the interplay between water, dynamic
recrystallization and deformation mechanisms, J. Struct. Geol., 27,
948–963, https://doi.org/10.1016/j.jsg.2005.04.008, 2005b.
Trusheim, F.: Über Halokinese und ihre Bedeutung für die
strukturelle Entwicklung Norddeutschlands, Z. Dt. Ges. Geowiss., 109, 111–158,
1957.
Urai, J. L. and Spiers, C. J.: The effect of grain boundary water on
deformation mechanisms and rheology of rocksalt during long-term
deformation, in: The mechanical behavior of salt – understanding of THMC
processes in salt, edited by: Wallner, M., Lux, K.-H., Minkley, W., and
Hardy Jr., H. R., Taylor & Francis, Hannover, Germany, 149–158,
https://doi.org/10.1201/9781315106502-17, 2007.
Urai, J. L., Means, W. D., and Lister, G. S.: Dynamic Recrystallization of
Minerals, in: Mineral and Rock Deformation, American Geophysical Union
(AGU), 161–199, https://doi.org/10.1029/GM036p0161, 1986a.
Urai, J. L., Spiers, C. J., Zwart, H. J., and Lister, G. S.: Weakening of
rock salt by water during long-term creep, Nature, 324, 554–557,
https://doi.org/10.1038/324554a0, 1986b.
Urai, J. L., Spiers, C. J., Peach, C. J., Franssen, R. C. M. W., and
Liezenberg, J. L.: Deformation mechanisms operating in naturally deformed
halite rocks as deduced from microstructural investigations, Geol. Mijnbouw,
66, 165–176, 1987.
Urai, J. L., Schléder, Z., Spiers, C. J., and Kukla, P. A.: Flow and
transport properties of salt rocks, in: Dynamics of complex intracontinental
basins: The central European basin system, edited by: Littke, R., Bayer, U.,
Gajewski, D., and Nelskamp, S., Springer, Berlin, Germany, 277–290, 2008.
Urai, J. L., Schmatz, J., and Klaver, J.: Report, Project KEM-17
Over-pressured salt solution mining caverns and leakage mechanisms, report, Ministry
of Economic Affairs and Climate, the Netherlands, 2019.
van Gent, H. W., Urai, J. L., and de Keijzer, M.: The internal geometry of
salt structures – A first look using 3D seismic data from the Zechstein of
the Netherlands, J. Struct. Geol., 33, 292–311,
https://doi.org/10.1016/j.jsg.2010.07.005, 2011.
van Keken, P. E., Spiers, C. J., van den Berg, A. P., and Muyzert, E. J.:
The effective viscosity of rocksalt: Implementation of steady-state creep
laws in numerical models of salt diapirism, Tectonophysics, 225, 457–476,
https://doi.org/10.1016/0040-1951(93)90310-G, 1993.
van Noort, R., Visser, H. J. M., and Spiers, C. J.: Influence of grain
boundary structure on dissolution controlled pressure solution and retarding
effects of grain boundary healing, J. Geophys. Res., 113, B03201,
https://doi.org/10.1029/2007JB005223, 2008.
Wawersik, W. R. and Zeuch, D. H.: Modeling and mechanistic interpretation of
creep of rock salt below 200 ∘C, Tectonophysica, 121, 125–152,
https://doi.org/10.1016/0040-1951(86)90040-5, 1986.
Wenkert, D.: The flow of salt glaciers, Geophys. Res. Lett., 6, 523–526,
1979.
Závada, P., Desbois, G., Schwedt, A., Lexa, O., and Urai, J. L.: Extreme
ductile deformation of fine-grained salt by coupled solution-precipitation
creep and microcracking: Microstructural evidence from perennial Zechstein
sequence (Neuhof salt mine, Germany), J. Struct. Geol., 37, 89–104,
https://doi.org/10.1016/j.jsg.2012.01.024, 2012.
Závada, P., Desbois, G., Urai, J. L., Schulmann, K., Rahmati, M., and
Lexa, O.: Impact of solid second phases on deformation mechanisms of
naturally deformed salt rocks (Kuh-e-Namak, Dashti, Iran) and rheological
stratification of the Hormuz Salt Formation, J. Struct. Geol., 74, 117–144,
2015.
Zill, F., Wang, W., and Nagel, T.: Influence of THM process coupling and
constitutive models on the simulated evolution of deep salt formations
during glaciation, in: The Mechanical Behavior of Salt X, edited by: de
Bresser, J. H. P., Drury, M. R., Fokker, P. A., Gazzani, M., Hangx, S. J.
T., Niemeijer, A. R., and Spiers, C. J., CRC Press, London, 353–362,
https://doi.org/10.1201/9781003295808-33, 2022.
Zulauf, J., Zulauf, G., Göttlich, J., and Peinl, M.: Formation of
chocolate-tablet boudins: Results from scaled analogue models, J. Struct.
Geol., 68, 97–111, https://doi.org/10.1016/j.jsg.2014.09.005, 2014.
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Short summary
We analysed Zechstein salt with microscopes and observed specific microstructures that indicate much faster deformation in rock salt with fine halite grains when compared to salt with larger grains. This is important because people build large cavities in the subsurface salt for energy storage or want to deposit radioactive waste inside it. When engineers and scientists use grain-size data and equations that include this mechanism, it will help to make better predictions in geological models.
We analysed Zechstein salt with microscopes and observed specific microstructures that indicate...
