Articles | Volume 10, issue 1
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Granite microporosity changes due to fracturing and alteration: secondary mineral phases as proxies for porosity and permeability estimation
GeoRessources Laboratory, University of Lorraine, Nancy, 54500, France
No articles found.
Lionel Bertrand, Claire Bossennec, Wan-Chiu Li, Cédric Borgese, Bruno Gavazzi, Matthis Frey, Yves Géraud, Marc Diraison, and Ingo Sass
The assessement of fracture networks is a key element for underground reservoir studies. The available methods for such assessement are unfortunately very limited in the case of complex 3 dimensions geometries. The paper shows a new method to overcome these limitations through automatic detection from images of outcrops.
Bastien Walter, Yves Géraud, Alexiane Favier, Nadjib Chibati, and Marc Diraison
Lake Abhe in southwestern Djibouti is known for its exposures of massive hydrothermal chimneys and hot springs on the lake’s eastern shore. This study highlights the control of the main structural faults of the area on the development of these hydrothermal features. This work contributes to better understand hydrothermal fluid pathways in this area and may help further exploration for the geothermal development of this remarkable site.
Related subject area
Subject area: Crustal structure and composition | Editorial team: Seismics, seismology, paleoseismology, geoelectrics, and electromagnetics | Discipline: GeophysicsAdvanced seismic characterization of a geothermal carbonate reservoir – insight into the structure and diagenesis of a reservoir in the German Molasse BasinElectrical conductivity of anhydrous and hydrous gabbroic melt under high temperature and high pressure: implications for the high-conductivity anomalies in the mid-ocean ridge regionFormation and geophysical character of transitional crust at the passive continental margin around Walvis Ridge, NamibiaUtilisation of probabilistic magnetotelluric modelling to constrain magnetic data inversion: proof-of-concept and field applicationComplex fault system revealed from 3-D seismic reflection data with deep learning and fault network analysisComparison of straight-ray and curved-ray surface wave tomography approaches in near-surface studies3D deep geothermal reservoir imaging with wireline distributed acoustic sensing in two boreholes3D high-resolution seismic imaging of the iron oxide deposits in Ludvika (Sweden) using full-waveform inversion and reverse time migrationThree-dimensional reflection seismic imaging of the iron oxide deposits in the Ludvika mining area, Sweden, using Fresnel volume migrationDrone-based magnetic and multispectral surveys to develop a 3D model for mineral exploration at Qullissat, Disko Island, GreenlandAmbient seismic noise analysis of LARGE-N data for mineral exploration in the Central Erzgebirge, GermanySurface-wave tomography for mineral exploration: a successful combination of passive and active data (Siilinjärvi phosphorus mine, Finland)Imaging crustal structures through a passive seismic imaging approach in a mining area in Saxony, GermanyReverse time migration (RTM) imaging of iron oxide deposits in the Ludvika mining area, SwedenNear-surface structure of the Sodankylä area in Finland, obtained by passive seismic interferometryEvolution of the Iberian Massif as deduced from its crustal thickness and geometry of a mid-crustal (Conrad) discontinuityFour-dimensional tracer flow reconstruction in fractured rock through borehole ground-penetrating radar (GPR) monitoringMoho topography beneath the European Eastern Alps by global-phase seismic interferometrySeismic imaging across fault systems in the Abitibi greenstone belt – an analysis of pre- and post-stack migration approaches in the Chibougamau area, Quebec, CanadaWireline distributed acoustic sensing allows 4.2 km deep vertical seismic profiling of the Rotliegend 150 °C geothermal reservoir in the North German BasinSparse 3D reflection seismic survey for deep-targeting iron oxide deposits and their host rocks, Ludvika Mines, SwedenFault sealing and caprock integrity for CO2 storage: an in situ injection experimentWhat can seismic noise tell us about the Alpine reactivation of the Iberian Massif? An example in the Iberian Central SystemIn situ hydromechanical responses during well drilling recorded by fiber-optic distributed strain sensingCoherent diffraction imaging for enhanced fault and fracture network characterizationSeismic evidence for failed rifting in the Ligurian Basin, Western Alpine domainAzimuth-, angle- and frequency-dependent seismic velocities of cracked rocks due to squirt flowCharacteristics of a fracture network surrounding a hydrothermally altered shear zone from geophysical borehole logsBayesian full-waveform inversion of tube waves to estimate fracture aperture and complianceCorrelation of core and downhole seismic velocities in high-pressure metamorphic rocks: a case study for the COSC-1 borehole, SwedenPrediction of seismic P-wave velocity using machine learningLarge-scale electrical resistivity tomography in the Cheb Basin (Eger Rift) at an International Continental Drilling Program (ICDP) monitoring site to image fluid-related structuresAnisotropic P-wave travel-time tomography implementing Thomsen's weak approximation in TOMO3DFull-waveform inversion of short-offset, band-limited seismic data in the Alboran Basin (SE Iberia)Fault interpretation in seismic reflection data: an experiment analysing the impact of conceptual model anchoring and vertical exaggerationImproving the quality of empirical Green's functions, obtained by cross-correlation of high-frequency ambient seismic noiseQuantifying the impact of the structural uncertainty on the gross rock volume in the Lubina and Montanazo oil fields (Western Mediterranean)What happens to fracture energy in brittle fracture? Revisiting the Griffith assumptionConstraining the geotherm beneath the British Isles from Bayesian inversion of Curie depth: integrated modelling of magnetic, geothermal, and seismic dataCrustal-scale depth imaging via joint full-waveform inversion of ocean-bottom seismometer data and pre-stack depth migration of multichannel seismic data: a case study from the eastern Nankai TroughImaging the East European Craton margin in northern Poland using extended correlation processing of regional seismic reflection profilesIonian Abyssal Plain: a window into the Tethys oceanic lithosphere3-D seismic travel-time tomography validation of a detailed subsurface model: a case study of the Záncara river basin (Cuenca, Spain)The effect of rock composition on muon tomography measurementsSeismic imaging of dyke swarms within the Sorgenfrei–Tornquist Zone (Sweden) and implications for thermal energy storage
Sonja H. Wadas, Johanna F. Krumbholz, Vladimir Shipilin, Michael Krumbholz, David C. Tanner, and Hermann Buness
Solid Earth, 14, 871–908,Short summary
The geothermal carbonate reservoir below Munich, Germany, is extremely heterogeneous because it is controlled by many factors like lithology, diagenesis, karstification, and tectonic deformation. We used a 3D seismic single- and multi-attribute analysis combined with well data and a neural-net-based lithology classification to obtain an improved reservoir concept outlining its structural and diagenetic evolution and to identify high-quality reservoir zones in the Munich area.
Mengqi Wang, Lidong Dai, Haiying Hu, Ziming Hu, Chenxin Jing, Chuanyu Yin, Song Luo, and Jinhua Lai
Solid Earth, 14, 847–858,Short summary
This is the first time that the electrical conductivity of gabbroic melt was assessed at high temperature and high pressure. The dependence of electrical conductivity on the degree of depolymerization was also explored. Electrical conductivity of gabbroic melts can be employed to interpret high-conductivity anomalies in the Mohns Ridge of the Arctic Ocean. This is of widespread interest to potential readers in high-pressure rock physics, solid geophysics, and deep Earth science.
Gesa Franz, Marion Jegen, Max Moorkamp, Christian Berndt, and Wolfgang Rabbel
Solid Earth, 14, 237–259,Short summary
Our study focuses on the correlation of two geophysical parameters (electrical resistivity and density) with geological units. We use this computer-aided correlation to improve interpretation of the Earth’s formation history along the Namibian coast and the associated formation of the South Atlantic Ocean. It helps to distinguish different types of sediment cover and varieties of oceanic crust, as well as to identify typical features associated with the breakup of continents.
Jérémie Giraud, Hoël Seillé, Mark D. Lindsay, Gerhard Visser, Vitaliy Ogarko, and Mark W. Jessell
Solid Earth, 14, 43–68,Short summary
We propose and apply a workflow to combine the modelling and interpretation of magnetic anomalies and resistivity anomalies to better image the basement. We test the method on a synthetic case study and apply it to real world data from the Cloncurry area (Queensland, Australia), which is prospective for economic minerals. Results suggest a new interpretation of the composition and structure towards to east of the profile that we modelled.
Thilo Wrona, Indranil Pan, Rebecca Bell, Christopher A.-L. Jackson, Robert Gawthorpe, Haakon Fossen, Edoseghe Osagiede, and Sascha Brune
We need to understand where faults are to (1) assess their seismic hazard, (2) to explore for natural resources and (3) to store CO2 safely in the subsurface. Currently we still map faults manually using seismic data i.e. acoustic images of the subsurface. Mapping these images is however difficult and time-consuming. Here we show how to use deep learning and network analysis to accelerate and simplify fault mapping.
Mohammadkarim Karimpour, Evert Slob, and Laura Valentina Socco
Solid Earth, 13, 1569–1583,Short summary
Near-surface characterisation is of great importance. Surface wave tomography (SWT) is a powerful tool to model the subsurface. In this work we compare straight-ray and curved-ray SWT at near-surface scale. We apply both approaches to four datasets and compare the results in terms of the quality of the final model and the computational cost. We show that in the case of high data coverage, straight-ray SWT can produce similar results to curved-ray SWT but with less computational cost.
Evgeniia Martuganova, Manfred Stiller, Ben Norden, Jan Henninges, and Charlotte M. Krawczyk
Solid Earth, 13, 1291–1307,Short summary
We demonstrate the applicability of vertical seismic profiling (VSP) acquired using wireline distributed acoustic sensing (DAS) technology for deep geothermal reservoir imaging and characterization. Borehole DAS data provide critical input for seismic interpretation and help assess small-scale geological structures. This case study can be used as a basis for detailed structural exploration of geothermal reservoirs and provide insightful information for geothermal exploration projects.
Brij Singh, Michał Malinowski, Andrzej Górszczyk, Alireza Malehmir, Stefan Buske, Łukasz Sito, and Paul Marsden
Solid Earth, 13, 1065–1085,Short summary
Fast depletion of shallower deposits is pushing the mining industry to look for cutting-edge technologies for deep mineral targeting. We demonstrated a joint workflow including two state-of-the-art technologies: full-waveform inversion and reverse time migration. We produced Earth images with significant details which can help with better estimation of areas with high mineralisation, better mine planning and safety measures.
Felix Hloušek, Michal Malinowski, Lena Bräunig, Stefan Buske, Alireza Malehmir, Magdalena Markovic, Lukasz Sito, Paul Marsden, and Emma Bäckström
Solid Earth, 13, 917–934,Short summary
Methods for mineral exploration play an important role within the EU. Exploration must be environmentally friendly, cost effective, and feasible in populated areas. Seismic methods have the potential to deliver detailed images of mineral deposits but suffer from these demands. We show the results for a sparse 3D seismic dataset acquired in Sweden. The 3D depth image allows us to track the known mineralizations beyond the known extent and gives new insights into the geometry of the deposit.
Robert Jackisch, Björn H. Heincke, Robert Zimmermann, Erik V. Sørensen, Markku Pirttijärvi, Moritz Kirsch, Heikki Salmirinne, Stefanie Lode, Urpo Kuronen, and Richard Gloaguen
Solid Earth, 13, 793–825,Short summary
We integrate UAS-based magnetic and multispectral data with legacy exploration data of a Ni–Cu–PGE prospect on Disko Island, West Greenland. The basalt unit has a complex magnetization, and we use a constrained 3D magnetic vector inversion to estimate magnetic properties and spatial dimensions of the target unit. Our 3D modelling reveals a horizontal sheet and a strong remanent magnetization component. We highlight the advantage of UAS use in rugged and remote terrain.
Trond Ryberg, Moritz Kirsch, Christian Haberland, Raimon Tolosana-Delgado, Andrea Viezzoli, and Richard Gloaguen
Solid Earth, 13, 519–533,Short summary
Novel methods for mineral exploration play an important role in future resource exploration. The methods have to be environmentally friendly, socially accepted and cost effective by integrating multidisciplinary methodologies. We investigate the potential of passive, ambient noise tomography combined with 3D airborne electromagnetics for mineral exploration in Geyer, Germany. We show that the combination of the two geophysical data sets has promising potential for future mineral exploration.
Chiara Colombero, Myrto Papadopoulou, Tuomas Kauti, Pietari Skyttä, Emilia Koivisto, Mikko Savolainen, and Laura Valentina Socco
Solid Earth, 13, 417–429,Short summary
Passive-source surface waves may be exploited in mineral exploration for deeper investigations. We propose a semi-automatic workflow for their processing. The geological interpretation of the results obtained at a mineral site (Siilinjärvi phosphorus mine) shows large potentialities and effectiveness of the proposed workflow.
Hossein Hassani, Felix Hloušek, Stefan Buske, and Olaf Wallner
Solid Earth, 12, 2703–2715,Short summary
Passive seismic imaging methods use natural earthquakes as seismic sources, while in active seismic imaging methods, artificial sources (e.g. explosives) are used to generate seismic waves. We imaged some structures related to a major fault plane through a passive seismic imaging approach using microearthquakes with magnitudes smaller than 0.9 (Mw). These structures have not been illuminated by a previously conducted 3D active seismic survey due to their large dip angles.
Yinshuai Ding and Alireza Malehmir
Solid Earth, 12, 1707–1718,Short summary
In this article, we investigate the potential of reverse time migration (RTM) for deep targeting iron oxide deposits and the possible AVO effect that is potentially seen in the common image gathers from this migration algorithm. The results are promising and help to delineate the deposits and host rock structures using a 2D dataset from the Ludvika mines of central Sweden.
Nikita Afonin, Elena Kozlovskaya, Suvi Heinonen, and Stefan Buske
Solid Earth, 12, 1563–1579,Short summary
In our study, we show the results of a passive seismic interferometry application for mapping the uppermost crust in the area of active mineral exploration in northern Finland. The obtained velocity models agree well with geological data and complement the results of reflection seismic data interpretation.
Puy Ayarza, José Ramón Martínez Catalán, Ana Martínez García, Juan Alcalde, Juvenal Andrés, José Fernando Simancas, Immaculada Palomeras, David Martí, Irene DeFelipe, Chris Juhlin, and Ramón Carbonell
Solid Earth, 12, 1515–1547,Short summary
Vertical incidence seismic profiling on the Iberian Massif images a mid-crustal-scale discontinuity at the top of the reflective lower crust. This feature shows that upper- and lower-crustal reflections merge into it, suggesting that it has often behaved as a detachment. The orogen-scale extension of this discontinuity, present in Gondwanan and Avalonian affinity terranes into the Iberian Massif, demonstrates its relevance, leading us to interpret it as the Conrad discontinuity.
Peter-Lasse Giertzuch, Joseph Doetsch, Alexis Shakas, Mohammadreza Jalali, Bernard Brixel, and Hansruedi Maurer
Solid Earth, 12, 1497–1513,Short summary
Two time-lapse borehole ground penetrating radar (GPR) surveys were conducted during saline tracer experiments in weakly fractured crystalline rock with sub-millimeter fractures apertures, targeting electrical conductivity changes. The combination of time-lapse reflection and transmission GPR surveys from different boreholes allowed monitoring the tracer flow and reconstructing the flow path and its temporal evolution in 3D and provided a realistic visualization of the hydrological processes.
Irene Bianchi, Elmer Ruigrok, Anne Obermann, and Edi Kissling
Solid Earth, 12, 1185–1196,Short summary
The European Alps formed during collision between the European and Adriatic plates and are one of the most studied orogens for understanding the dynamics of mountain building. In the Eastern Alps, the contact between the colliding plates is still a matter of debate. We have used the records from distant earthquakes to highlight the geometries of the crust–mantle boundary in the Eastern Alpine area; our results suggest a complex and faulted internal crustal structure beneath the higher crests.
Saeid Cheraghi, Alireza Malehmir, Mostafa Naghizadeh, David Snyder, Lucie Mathieu, and Pierre Bedeaux
Solid Earth, 12, 1143–1164,Short summary
High-resolution seismic profiles in 2D are acquired in the north and south of the Chibougamau area, Quebec, Canada located in the northeast of the Abitibi Greenstone belt. The area mostly includes volcanic rocks, and both profiles cross over several fault zones. The seismic method is acquired to image the subsurface down to depth of 12 km. The main aim of this study is to image major fault zones and the geological formations connected to those faults to investigate metal endowment in the area.
Jan Henninges, Evgeniia Martuganova, Manfred Stiller, Ben Norden, and Charlotte M. Krawczyk
Solid Earth, 12, 521–537,Short summary
We performed a seismic survey in two 4.3 km deep geothermal research wells using the novel method of distributed acoustic sensing and wireline cables. The characteristics of the acquired data, methods for data processing and quality improvement, and interpretations on the geometry and structure of the sedimentary and volcanic reservoir rocks are presented. The method enables measurements at high temperatures and reduced cost compared to conventional sensors.
Alireza Malehmir, Magdalena Markovic, Paul Marsden, Alba Gil, Stefan Buske, Lukasz Sito, Emma Bäckström, Martiya Sadeghi, and Stefan Luth
Solid Earth, 12, 483–502,Short summary
A smooth transition toward decarbonization demands access to more minerals of critical importance. Europe has a good geology for many of these mineral deposits, but at a depth requiring sensitive, environmentally friendly, and cost-effective methods for their exploration. In this context, we present a sparse 3D seismic dataset that allowed identification of potential iron oxide resources at depth and helped to characterise key geological structures and a historical tailing in central Sweden.
Alba Zappone, Antonio Pio Rinaldi, Melchior Grab, Quinn C. Wenning, Clément Roques, Claudio Madonna, Anne C. Obermann, Stefano M. Bernasconi, Matthias S. Brennwald, Rolf Kipfer, Florian Soom, Paul Cook, Yves Guglielmi, Christophe Nussbaum, Domenico Giardini, Marco Mazzotti, and Stefan Wiemer
Solid Earth, 12, 319–343,Short summary
The success of the geological storage of carbon dioxide is linked to the availability at depth of a capable reservoir and an impermeable caprock. The sealing capacity of the caprock is a key parameter for long-term CO2 containment. Faults crosscutting the caprock might represent preferential pathways for CO2 to escape. A decameter-scale experiment on injection in a fault, monitored by an integrated network of multiparamerter sensors, sheds light on the mobility of fluids within the fault.
Juvenal Andrés, Puy Ayarza, Martin Schimmel, Imma Palomeras, Mario Ruiz, and Ramon Carbonell
Solid Earth, 11, 2499–2513,
Yi Zhang, Xinglin Lei, Tsutomu Hashimoto, and Ziqiu Xue
Solid Earth, 11, 2487–2497,Short summary
Spatially continuous strain responses in two monitoring wells induced by a well-drilling process were monitored using high-resolution fiber-optic distributed strain sensing (DSS). The modeling results suggest that the strain polarities and magnitudes along the wellbores may be indicative of the layered-permeability structure or heterogeneous formation damage. The performance and value of DSS as a novel hydrogeophysical tool for in situ subsurface monitoring are emphasized.
Benjamin Schwarz and Charlotte M. Krawczyk
Solid Earth, 11, 1891–1907,Short summary
Intricate fault and fracture networks cut through the upper crust, and their detailed delineation and characterization play an important role in the Earth sciences. While conventional geophysical sounding techniques only provide indirect means of detection, we present scale-spanning field data examples, in which coherent diffraction imaging – a framework inspired by optics and visual perception – enables the direct imaging of these crustal features at an unprecedented spatial resolution.
Anke Dannowski, Heidrun Kopp, Ingo Grevemeyer, Dietrich Lange, Martin Thorwart, Jörg Bialas, and Martin Wollatz-Vogt
Solid Earth, 11, 873–887,Short summary
The Ligurian Sea opened ~30–15 Ma during the SE migration of the Calabrian subduction zone. Seismic travel time tomography reveals the absence of oceanic crust, documenting that the extension of continental lithosphere stopped before seafloor spreading initiated. The extension led to extreme crustal thinning and possibly exhumed mantle accompanied by syn-rift sedimentation. Our new interpretation of the crust's nature is important for plate reconstruction modelling related to the Alpine orogen.
Yury Alkhimenkov, Eva Caspari, Simon Lissa, and Beatriz Quintal
Solid Earth, 11, 855–871,Short summary
We perform a three-dimensional numerical study of the fluid–solid deformation at the pore scale. We show that seismic wave velocities exhibit strong azimuth-, angle- and frequency-dependent behavior due to squirt flow between interconnected cracks. We conclude that the overall anisotropy mainly increases due to squirt flow, but in some specific planes it can locally decrease as well as increase, depending on the material properties.
Eva Caspari, Andrew Greenwood, Ludovic Baron, Daniel Egli, Enea Toschini, Kaiyan Hu, and Klaus Holliger
Solid Earth, 11, 829–854,Short summary
A shallow borehole was drilled to explore the petrophysical and hydraulic characteristics of a hydrothermally active fault in the crystalline Aar massif of the Alps. A key objective of studying surficial features of this kind is to establish analogies with natural and deep-seated engineered hydrothermal systems. A wide range of geophysical borehole logs was acquired, which revealed a complex fracture network in the damage zone of the fault and a related compartmentalized hydraulic behavior.
Jürg Hunziker, Andrew Greenwood, Shohei Minato, Nicolás Daniel Barbosa, Eva Caspari, and Klaus Holliger
Solid Earth, 11, 657–668,Short summary
The characterization of fractures is crucial for a wide range of pertinent applications, such as geothermal energy production, hydrocarbon exploration, CO2 sequestration, and nuclear waste disposal. We estimate fracture parameters based on waves that travel along boreholes (tube waves) using a stochastic optimization approach.
Felix Kästner, Simona Pierdominici, Judith Elger, Alba Zappone, Jochem Kück, and Christian Berndt
Solid Earth, 11, 607–626,Short summary
Knowledge about physical properties at depth is crucial to image and understand structures linked with orogenic processes. We examined seismic velocities from core and downhole data from the COSC-1 borehole, Sweden, and calibrated our results with laboratory measurements on core samples. Despite a strong mismatch between the core and downhole velocities due to microcracks, mafic units are resolved at all scales, while at sample scale, strong seismic anisotropy correlates with the rock foliation.
Ines Dumke and Christian Berndt
Solid Earth, 10, 1989–2000,Short summary
Knowing the velocity with which seismic waves travel through the top of the crust is important both for identifying anomalies, e.g. the presence of resources, and for geophysical data evaluation. Traditionally this has been done by using empirical functions. Here, we use machine learning to derive better seismic velocity estimates for the crust below the oceans. In most cases this methods performs better than empirical averages.
Tobias Nickschick, Christina Flechsig, Jan Mrlina, Frank Oppermann, Felix Löbig, and Thomas Günther
Solid Earth, 10, 1951–1969,Short summary
An active CO2 degassing site in the western Eger Rift, Czech Republic, was investigated with a 6.5 km long geophysical survey using a specific large-scale geoelectrical setup, supported by shallow geoelectrical surveys and gravity measurements. The experiment reveals unusually low resistivities in the sediments and basement below the degassing area of less than 10 Ω and provides a base for a custom geological model of the area for a future 400 m deep research drilling in this area.
Adrià Meléndez, Clara Estela Jiménez, Valentí Sallarès, and César R. Ranero
Solid Earth, 10, 1857–1876,Short summary
A new code for anisotropic travel-time tomography is presented. We describe the equations governing the anisotropic ray propagation algorithm and the modified inversion solver. We study the sensitivity of two medium parameterizations and compare four inversion strategies on a canonical model. This code can provide better understanding of the Earth's subsurface in the rather common geological contexts in which seismic velocity displays a weak dependency on the polar angle of ray propagation.
Clàudia Gras, Daniel Dagnino, Clara Estela Jiménez-Tejero, Adrià Meléndez, Valentí Sallarès, and César R. Ranero
Solid Earth, 10, 1833–1855,Short summary
We present a workflow that combines different geophysical techniques, showing that a detailed seismic velocity model can be obtained even for non-optimal data sets, i.e. relatively short-offset, band-limited streamer data recorded in deep water. This fact has an important implication for the Marine seismic community, suggesting that many of the existing data sets should be revisited and analysed with new techniques to enhance our understanding of the subsurface, as in the Alboran Basin case.
Juan Alcalde, Clare E. Bond, Gareth Johnson, Armelle Kloppenburg, Oriol Ferrer, Rebecca Bell, and Puy Ayarza
Solid Earth, 10, 1651–1662,
Nikita Afonin, Elena Kozlovskaya, Jouni Nevalainen, and Janne Narkilahti
Solid Earth, 10, 1621–1634,
Carla Patricia Bárbara, Patricia Cabello, Alexandre Bouche, Ingrid Aarnes, Carlos Gordillo, Oriol Ferrer, Maria Roma, and Pau Arbués
Solid Earth, 10, 1597–1619,
Timothy R. H. Davies, Maurice J. McSaveney, and Natalya V. Reznichenko
Solid Earth, 10, 1385–1395,Short summary
Griffith (1921) assumed that energy used to create new surface area by breaking intact rock immediately becomes surface energy which is not available for further breakage. Our lab data disprove this assumption; we created much more new surface area, 90 % on submicron fragments, than the energy involved should allow. As technology allows ever smaller fragments to be measured, continued use of the Griffith assumption will lead to incorrect energy budgets for earthquakes and rock avalanches.
Ben Mather and Javier Fullea
Solid Earth, 10, 839–850,Short summary
The temperature in the crust can be constrained by the Curie depth, which is often interpreted as the 580 °C isotherm. We cast the estimation of Curie depth, from maps of the magnetic anomaly, within a Bayesian framework to properly quantify its uncertainty across the British Isles. We find that uncertainty increases considerably for deeper Curie depths, which demonstrates that generally this method is only reliable in hotter regions, such as Scotland and Northern Ireland.
Andrzej Górszczyk, Stéphane Operto, Laure Schenini, and Yasuhiro Yamada
Solid Earth, 10, 765–784,Short summary
In order to broaden our knowledge about the deep lithosphere using seismic methods, we develop leading-edge imaging workflows integrating different types of data. Here we exploit the complementary information carried by seismic wavefields, which are fundamentally different in terms of acquisition setting. We cast this information into our processing workflow and build a detailed model of the subduction zone, which is subject to further geological interpretation.
Miłosz Mężyk, Michał Malinowski, and Stanisław Mazur
Solid Earth, 10, 683–696,Short summary
The Precambrian East European Craton is one of the most important building blocks of the European plate. Unlike in Scandinavia, its crystalline crust in Poland is concealed beneath younger sediments. Reprocessing of ca. 950 km regional reflection seismic profiles acquired during shale gas exploration in NE Poland revealed reflectivity patterns interpreted as signs of Svekofennian orogeny, proving a similar mechanism of Paleoproterozoic crustal formation across the Baltic Sea.
Anke Dannowski, Heidrun Kopp, Frauke Klingelhoefer, Dirk Klaeschen, Marc-André Gutscher, Anne Krabbenhoeft, David Dellong, Marzia Rovere, David Graindorge, Cord Papenberg, and Ingo Klaucke
Solid Earth, 10, 447–462,Short summary
The nature of the Ionian Sea crust has been the subject of scientific debate for more than 30 years. Seismic data, recorded on ocean bottom instruments, have been analysed and support the interpretation of the Ionian Abyssal Plain as a remnant of the Tethys oceanic lithosphere with the Malta Escarpment as a transform margin and a Tethys opening in the NNW–SSE direction.
David Marti, Ignacio Marzan, Jana Sachsenhausen, Joaquina Alvarez-Marrón, Mario Ruiz, Montse Torne, Manuela Mendes, and Ramon Carbonell
Solid Earth, 10, 177–192,Short summary
A detailed knowledge of the very shallow subsurface has become of crucial interest for modern society, especially if it hosts critical surface infrastructures such as temporary waste storage sites. The use of indirect methods to characterize the internal structure of the subsurface has been successfully applied, based on the 3-D distribution of seismic velocities and well-log data, which are of great interest for civil engineering companies.
Alessandro Lechmann, David Mair, Akitaka Ariga, Tomoko Ariga, Antonio Ereditato, Ryuichi Nishiyama, Ciro Pistillo, Paola Scampoli, Fritz Schlunegger, and Mykhailo Vladymyrov
Solid Earth, 9, 1517–1533,Short summary
Muon tomography is a technology, similar to X-ray tomography, to image the interior of an object, including geologically interesting ones. In this work, we examined the influence of rock composition on the physical measurements, and the possible error that is made by assuming a too-simplistic rock model. We performed numerical simulations for a more realistic rock model and found that beyond 300 m of rock, the composition starts to play a significant role and has to be accounted for.
Alireza Malehmir, Bo Bergman, Benjamin Andersson, Robert Sturk, and Mattis Johansson
Solid Earth, 9, 1469–1485,Short summary
Interest and demand for green-type energy usage and storage are growing worldwide. Among several, thermal energy storage that stores energy (excess heat or cold) in fluids is particularly interesting. For an upscaling purpose, three seismic profiles were acquired within the Tornquist suture zone in the southwest of Sweden and historical crustal-scale offshore BABEL lines revisited. A number of dykes have been imaged and implications for the storage and tectonic setting within the zone discussed.
Banfield, J. F. and Eggleton, R. A.: Analytical Transmission Electron Microscope Studies of Plagioclase, Muscovite, and K-Feldspar Weathering, Clays Clay Miner., 38, 77–89, 1990.
Bankwitz, P., Bankwitz, E., Thomas, R., Wemmer, K., and Kämpf, H.: Age and depth evidence for pre-exhumation joints in granite plutons: fracturing during the early cooling stage of felsic rock, Geol. Soc. Lond. Spec. Publ., 231, 25–47, https://doi.org/10.1144/GSL.SP.2004.231.01.03, 2004.
Bense, V. F., Gleeson, T., Loveless, S. E., Bour, O., and Scibek, J.: Fault zone hydrogeology, Earth-Sci. Rev., 127, 171–192, https://doi.org/10.1016/j.earscirev.2013.09.008, 2013.
Benson, P. M., Meredith, P. G., and Schubnel, A.: Role of void space geometry in permeability evolution in crustal rocks at elevated pressure, J. Geophys. Res.-Solid Earth, 111, B12203, https://doi.org/10.1029/2006JB004309, 2006.
Bernabé, Y., Mok, U., and Evans, B.: Permeability-porosity relationships in rocks subjected to various evolution processes, Pure Appl. Geophys., 160, 937–960, 2003.
Bertrand, L., Jusseaume, J., Géraud, Y., Diraison, M., Damy, P.-C., Navelot, V., and Haffen, S.: Structural heritage, reactivation and distribution of fault and fracture network in a rifting context: Case study of the western shoulder of the Upper Rhine Graben, J. Struct. Geol., 108, 243–255, https://doi.org/10.1016/j.jsg.2017.09.006, 2018.
Boyce, A., Fulignati, P., and Sbrana, A.: Deep hydrothermal circulation in a granite intrusion beneath Larderello geothermal area (Italy): constraints from mineralogy, fluid inclusions and stable isotopes, J. Volcanol. Geotherm. Res., 126, 243–262, https://doi.org/10.1016/S0377-0273(03)00150-1, 2003.
Brace, W. F., Walsh, J. B., and Frangos, W. T.: Permeability of granite under high pressure, J. Geophys. Res., 73, 2225–2236, https://doi.org/10.1029/JB073i006p02225, 1968.
Brace, W. F., Silver, E., Hadley, K., and Goetze, C.: Cracks and Pores: A Closer Look, Science, 178, 162–164, https://doi.org/10.1126/science.178.4057.162, 1972.
Breiter, K. and Sulovský, P.: Geochronology of the Melechov granite massif, Geosci. Res. Rep. 2004, 38, 16–19, 2005.
Buiting, J. J. M. and Clerke, E. A.: Permeability from porosimetry measurements: Derivation for a tortuous and fractal tubular bundle, J. Pet. Sci. Eng., 108, 267–278, https://doi.org/10.1016/j.petrol.2013.04.016, 2013.
Caine, J. S., Evans, J. P., and Forster, C. B.: Fault zone architecture and permeability structure, Geology, 24, 1025, https://doi.org/10.1130/0091-7613(1996)024<1025:FZAAPS>2.3.CO;2, 1996.
David, C., Wong, T.-F., Zhu, W., and Zhang, J.: Laboratory measurement of compaction-induced permeability change in porous rocks: Implications for the generation and maintenance of pore pressure excess in the crust, Pure Appl. Geophys., 143, 425–456, https://doi.org/10.1007/BF00874337, 1994.
Evans, J. P., Forster, C. B., and Goddard, J. V.: Permeability of fault-related rocks, and implications for hydraulic structure of fault zones, J. Struct. Geol., 19, 1393–1404, https://doi.org/10.1016/S0191-8141(97)00057-6, 1997.
Faulkner, D. R., Jackson, C. A. L., Lunn, R. J., Schlische, R. W., Shipton, Z. K., Wibberley, C. A. J., and Withjack, M. O.: A review of recent developments concerning the structure, mechanics and fluid flow properties of fault zones, J. Struct. Geol., 32, 1557–1575, https://doi.org/10.1016/j.jsg.2010.06.009, 2010.
Faulkner, D. R., Mitchell, T. M., Jensen, E., and Cembrano, J.: Scaling of fault damage zones with displacement and the implications for fault growth processes, J. Geophys. Res., 116, B05403, https://doi.org/10.1029/2010JB007788, 2011.
Ferry, J. M.: Reaction mechanisms, physical conditions, and mass transfer during hydrothermal alteration of mica and feldspar in granitic rocks from south-central Maine, USA, Contrib. Mineral. Petrol., 68, 125–139, https://doi.org/10.1007/BF00371895, 1979.
Franke, W.: The mid-European segment of the Variscides: tectonostratigraphic units, terrane boundaries and plate tectonic evolution, Geological Society, London, Special Publications, 179, 35–61, https://doi.org/10.1144/GSL.SP.2000.179.01.05, 2000.
Gao, Z. and Hu, Q.: Estimating permeability using median pore-throat radius obtained from mercury intrusion porosimetry, J. Geophys. Eng., 10, 025014, https://doi.org/10.1088/1742-2132/10/2/025014, 2013.
Géraud, Y.: Variations of connected porosity and inferred permeability in a thermally cracked granite, Geophys. Res. Lett., 21, 979–982, https://doi.org/10.1029/94GL00642, 1994.
Géraud, Y., Caron, J., and Faure, P.: Porosity network of a ductile shear zone, J. Struct. Geol., 17, 1757–1769, https://doi.org/10.1016/0191-8141(95)00067-N, 1995.
Géraud, Y., Diraison, M., and Orellana, N.: Fault zone geometry of a mature active normal fault: A potential high permeability channel (Pirgaki fault, Corinth rift, Greece), Tectonophysics, 426, 61–76, https://doi.org/10.1016/j.tecto.2006.02.023, 2006.
Géraud, Y., Rosener, M., Surma, F., Place, J., Le Garzic, É., and Diraison, M.: Physical properties of fault zones within a granite body: Example of the Soultz-sous-Forêts geothermal site, Comptes Rendus Geosci., 342, 566–574, https://doi.org/10.1016/j.crte.2010.02.002, 2010.
Gerdes, A., Friedl, G., Parrish, R., and Finger, F.: High-resolution geochronology of Variscan granite emplacement – the South Bohemian Batholith, Journal of the Czech Geological Society, 48, 53–54, 2003.
Gutmanis, J.: Basement Reservoirs – A Review of their Geological and Production Characteristics, International Petroleum Technology Conference, 2009.
Harlov, D. E., Procházka, V., Förster, H.-J., and Matějka, D.: Origin of monazite–xenotime–zircon–fluorapatite assemblages in the peraluminous Melechov granite massif, Czech Republic, Mineral. Petrol., 94, 9–26, https://doi.org/10.1007/s00710-008-0003-8, 2008.
Hartley, A. J. and Otava, J.: Sediment provenance and dispersal in a deep marine foreland basin: the Lower Carboniferous Culm Basin, Czech Republic, J. Geol. Soc., 158, 137–150, https://doi.org/10.1144/jgs.158.1.137, 2001.
Hey, M. H.: A New Review of the Chlorites, Mineral. Mag., 30, 277–292, https://doi.org/10.1180/minmag.1954.030.224.01, 1954.
Hooper, A. J.: 5 – Crystalline geological repository systems: characterisation, site surveying and construction technologies and techniques, in: Geological Repository Systems for Safe Disposal of Spent Nuclear Fuels and Radioactive Waste, edited by: Ahn, J. and Apted, M. J., 121–152, Woodhead Publishing, 2010.
Jamtveit, B., Malthesorenssen, A., and Kostenko, O.: Reaction enhanced permeability during retrogressive metamorphism, Earth Planet. Sci. Lett., 267, 620–627, https://doi.org/10.1016/j.epsl.2007.12.016, 2008.
Jamtveit, B., Putnis, C. V., and Malthe-Sørenssen, A.: Reaction induced fracturing during replacement processes, Contrib. Mineral. Petrol., 157, 127–133, https://doi.org/10.1007/s00410-008-0324-y, 2009.
Jamtveit, B., Kobchenko, M., Austrheim, H., Malthe-Sørenssen, A., Røyne, A., and Svensen, H.: Porosity evolution and crystallization-driven fragmentation during weathering of andesite, J. Geophys. Res., 116, B12204, https://doi.org/10.1029/2011JB008649, 2011.
Katsube, T. J. and Kamineni, D. C.: Effect of alteration on pore structure of crystalline rocks; core samples from Atikokan, Ontario, Can. Mineral., 21, 637–646, 1983.
Katz, A. J. and Thompson, A. H.: Quantitative prediction of permeability in porous rock, Phys. Rev. B, 34, 8179–8181, https://doi.org/10.1103/PhysRevB.34.8179, 1986.
Katz, A. J. and Thompson, A. H.: Prediction of rock electrical conductivity from mercury injection measurements, J. Geophys. Res., 92, 599, https://doi.org/10.1029/JB092iB01p00599, 1987.
Kranz, R. L.: Crack growth and development during creep of Barre granite, Int. J. Rock Mech. Min. Sci. Geomech. Abstr., 16, 23–35, https://doi.org/10.1016/0148-9062(79)90772-1, 1979a.
Kranz, R. L.: Crack-crack and crack-pore interactions in stressed granite, Int. J. Rock Mech. Min. Sci. Geomech. Abstr., 16, 37–47, https://doi.org/10.1016/0148-9062(79)90773-3, 1979b.
Kranz, R. L.: Microcracks in rocks: A review, Tectonophysics, 100, 449–480, https://doi.org/10.1016/0040-1951(83)90198-1, 1983.
Lachassagne, P., Wyns, R., and Dewandel, B.: The fracture permeability of Hard Rock Aquifers is due neither to tectonics, nor to unloading, but to weathering processes: Weathering and permeability of Hard Rock Aquifers, Terra Nova, 23, 145–161, https://doi.org/10.1111/j.1365-3121.2011.00998.x, 2011.
Lenormand, R., Zarcone, C., and Sarr, A.: Mechanisms of the displacement of one fluid by another in a network of capillary ducts, J. Fluid Mech., 135, 337, https://doi.org/10.1017/S0022112083003110, 1983.
Lexa, O. and Schulmann, K.: Provedení geologických a dalších prací na testovací lokalitě Melechovský masiv – 2. etapa. Vyhodnocení povrchových křehkých struktur a puklinové sítě na testovací lokalitě Melechovský masiv – souborná zpráva za období 2004–2006, Czech Geological Survey, 2006.
Long, J. C. S. and Witherspoon, P. A.: The relationship of the degree of interconnection to permeability in fracture networks, J. Geophys. Res., 90, 3087, https://doi.org/10.1029/JB090iB04p03087, 1985.
Machek, M.: Relation of pore space geometry, permeability and microstructure in low-porosity rocks, PhD Thesis, Charles University in Prague, Prague, 2011.
Matějka, D. and Janoušek, V.: Whole-rock geochemistry and petrogenesis of granites from the northern part of the Moldanubian Batholith (Czech Republic), Acta Univ. Carol. Geol., 42, 73–79, 1998.
Mazurier, A., Sardini, P., Rossi, A. M., Graham, R. C., Hellmuth, K.-H., Parneix, J.-C., Siitari-Kauppi, M., Voutilainen, M., and Caner, L.: Development of a fracture network in crystalline rocks during weathering: Study of Bishop Creek chronosequence using X-ray computed tomography and 14 C-PMMA impregnation method, Geol. Soc. Am. Bull., 128, 1423–1438, https://doi.org/10.1130/B31336.1, 2016.
Mitchell, T. M. and Faulkner, D. R.: The nature and origin of off-fault damage surrounding strike-slip fault zones with a wide range of displacements: A field study from the Atacama fault system, northern Chile, J. Struct. Geol., 31, 802–816, https://doi.org/10.1016/j.jsg.2009.05.002, 2009.
Moeck, I. S.: Catalog of geothermal play types based on geologic controls, Renew, Sustain. Energy Rev., 37, 867–882, https://doi.org/10.1016/j.rser.2014.05.032, 2014.
Nishimoto, S. and Yoshida, H.: Hydrothermal alteration of deep fractured granite: Effects of dissolution and precipitation, Lithos, 115, 153–162, https://doi.org/10.1016/j.lithos.2009.11.015, 2010.
Nooruddin, H. A., Hossain, M. E., Al-Yousef, H., and Okasha, T.: Comparison of permeability models using mercury injection capillary pressure data on carbonate rock samples, J. Pet. Sci. Eng., 121, 9–22, https://doi.org/10.1016/j.petrol.2014.06.032, 2014.
Procházka, V. and Matějka, D.: Rock-forming accessory minerals in the granites of the Melechov Massif (Moldanubian Batholith, Bohemian Massif), Acta Univ. Carol. Geol., 48, 71–79, 2004.
Rempe, N. T.: Permanent underground repositories for radioactive waste, Prog. Nucl. Energy, 49, 365–374, https://doi.org/10.1016/j.pnucene.2007.04.002, 2007.
Rosener, M. and Géraud, Y.: Using physical properties to understand the porosity network geometry evolution in gradually altered granites in damage zones, Geol. Soc. Lond. Spec. Publ., 284, 175–184, https://doi.org/10.1144/SP284.12, 2007.
Schild, M., Siegesmund, S., Vollbrecht, A., and Mazurek, M.: Characterization of granite matrix porosity and pore-space geometry by in situ and laboratory methods, Geophys. J. Int., 146, 111–125, https://doi.org/10.1046/j.0956-540x.2001.01427.x, 2001.
Scholz, C. H., Dawers, N. H., Yu, J.-Z., Anders, M. H., and Cowie, P. A.: Fault growth and fault scaling laws: Preliminary results, J. Geophys. Res.-Solid Earth, 98, 21951–21961, https://doi.org/10.1029/93JB01008, 1993.
Schulmann, K., Venera, Z., Konopásek, J., and Lexa, O.: Strukturní a petrologický výzkum melechovského masivu, zpráva za rok 1997, Faculty of Science of the Charles University in Prague, Prague, 1998.
Schulmann, K., Lexa, O., Štípská, P., Racek, M., Tajčmanová, L., Konopásek, J., Edel, J.-B., Peschler, A., and Lehmann, J.: Vertical extrusion and horizontal channel flow of orogenic lower crust: key exhumation mechanisms in large hot orogens?, J. Metamorph. Geol., 26, 273–297, https://doi.org/10.1111/j.1525-1314.2007.00755.x, 2008.
Sprunt, E. S. and Brace, W. F.: Direct observation of microcavities in crystalline rocks, Int. J. Rock Mech. Min. Sci. Geomech. Abstr., 11, 139–150, https://doi.org/10.1016/0148-9062(74)92874-5, 1974.
Šrámek, J., Sedlák, J., and Obr, J.: Melechovský masív, vizualizace tíhových dat a kvantitativní tíhový řez, Gravimetrické a petrofyzikální práce na lokalitě Dolní Město v etapě 1995–1996, Geofyzika, a.s., Brno, Brno, 1996.
Staněk, M.: Structural and Petrophysical Characterisation of Granite Intended for Radioactive Waste Storage, PhD Thesis, Charles University in Prague, University of Strasbourg, Prague, Strasbourg, 2013.
Staněk, M. and Géraud, Y.: Chemical compositions and structural formulas of phyllosilicates and throat size distributions of granite samples from the MEL-5 borehole, PANGAEA, available at: https://doi.pangaea.de/10.1594/PANGAEA.898002, 2019
Staněk, M., Géraud, Y., Lexa, O., Špaček, P., Ulrich, S., and Diraison, M.: Elastic anisotropy and pore space geometry of schlieren granite: direct 3-D measurements at high confining pressure combined with microfabric analysis, Geophys. J. Int., 194, 383–394, https://doi.org/10.1093/gji/ggt053, 2013.
Tapponnier, P. and Brace, W.: Development of stress-induced microcracks in Westerly Granite, Int. J. Rock Mech. Min. Sci. Geomech. Abstr., 13, 103–112, https://doi.org/10.1016/0148-9062(76)91937-9, 1976.
Trice, R.: Basement exploration, West of Shetlands: progress in opening a new play on the UKCS, Geol. Soc. Lond. Spec. Publ., 397, 81–105, https://doi.org/10.1144/SP397.3, 2014.
Trubač, J., Žák, J., Chlupáčová, M., and Janoušek, V.: Magnetic fabric and modeled strain distribution in the head of a nested granite diapir, the Melechov pluton, Bohemian Massif, J. Struct. Geol., 66, 271–283, https://doi.org/10.1016/j.jsg.2014.05.015, 2014.
Vermilye, J. M. and Scholz, C. H.: Fault propagation and segmentation: insight from the microstructural examination of a small fault, J. Struct. Geol., 21, 1623–1636, https://doi.org/10.1016/S0191-8141(99)00093-0, 1999.
Verner, K., Žák, J., Šrámek, J., Paclíková, J., Zavřelová, A., Machek, M., Finger, F., and Johnson, K.: Formation of elongated granite–migmatite domes as isostatic accommodation structures in collisional orogens, J. Geodyn., 73, 100–117, https://doi.org/10.1016/j.jog.2013.10.002, 2014.
Walter, B., Géraud, Y., Bartier, D., Kluska, J.-M., Diraison, M., Morlot, C., and Raisson, F.: Petrophysical and mineralogical evolution of weathered crystalline basement in western Uganda: Implications for fluid transfer and storage, AAPG Bull., 102, 1035–1065, https://doi.org/10.1306/0810171610917171, 2018.
Wardlaw, N. C. and McKellar, M.: Mercury porosimetry and the interpretation of pore geometry in sedimentary rocks and artificial models, Powder Technol., 29, 127–143, https://doi.org/10.1016/0032-5910(81)85011-5, 1981.
Wardlaw, N. C., Li, Y., and Forbes, D.: Pore-throat size correlation from capillary pressure curves, Transp. Porous Media, 2, 597–614, https://doi.org/10.1007/BF00192157, 1987.
Washburn, E. W.: Note on a Method of Determining the Distribution of Pore Sizes in a Porous Material, P. Natl. Acad. Sci. USA, 7, 115–116, 1921.
Wilson, J., Chester, J., and Chester, F.: Microfracture analysis of fault growth and wear processes, Punchbowl Fault, San Andreas system, California, J. Struct. Geol., 25, 1855–1873, https://doi.org/10.1016/S0191-8141(03)00036-1, 2003.
Wyns, R., Baltassat, J.-M., Lachassagne, P., Legchenko, A., Vairon, J., and Mathieu, F.: Application of proton magnetic resonance soundings to groundwater reserve mapping in weathered basement rocks (Brittany, France), Bull. Soc. Geol. Fr., 175, 21–34, https://doi.org/10.2113/175.1.21, 2004.
Wyns, R., Dewandel, B., and Lachassagne, P.: Origin of fracturation in hard-rock aquifers: what are the factors that control the properties of the fissured horizon?, https://doi.org/10.13140/rg.2.1.3699.3124, 2015.
Yoshida, H., Metcalfe, R., Seida, Y., Takahashi, H., and Kikuchi, T.: Retardation capacity of altered granitic rock distributed along fractured and faulted zones in the orogenic belt of Japan, Eng. Geol., 106, 116–122, https://doi.org/10.1016/j.enggeo.2009.03.008, 2009.
Yu, L. and Wardlaw, N. C.: Mechanisms of nonwetting phase trapping during imbibition at slow rates, J. Colloid Interface Sci., 109, 473–486, https://doi.org/10.1016/0021-9797(86)90325-5, 1986a.
Yu, L. and Wardlaw, N. C.: The influence of wettability and critical pore-throat size ratio on snap–off, J. Colloid Interface Sci., 109, 461–472, https://doi.org/10.1016/0021-9797(86)90324-3, 1986b.
Žák, J., Verner, K., Finger, F., Faryad, S. W., Chlupáčová, M., and Veselovský, F.: The generation of voluminous S-type granites in the Moldanubian unit, Bohemian Massif, by rapid isothermal exhumation of the metapelitic middle crust, Lithos, 121, 25–40, https://doi.org/10.1016/j.lithos.2010.10.002, 2011.
Žák, J., Verner, K., Janoušek, V., Holub, F. V., Kachlík, V., Finger, F., Hajná, J., Tomek, F., Vondrovic, L., and Trubač, J.: A plate-kinematic model for the assembly of the Bohemian Massif constrained by structural relationships around granitoid plutons, Geol. Soc. Lond. Spec. Publ., 405, 169–196, https://doi.org/10.1144/SP405.9, 2014.
Zang, A., Wagner, F. C., Stanchits, S., Janssen, C., and Dresen, G.: Fracture process zone in granite, J. Geophys. Res.-Solid Earth, 105, 23651–23661, https://doi.org/10.1029/2000JB900239, 2000.
Zoback, M. D. and Byerlee, J. D.: The effect of microcrack dilatancy on the permeability of westerly granite, J. Geophys. Res., 80, 752–755, https://doi.org/10.1029/JB080i005p00752, 1975.
Granite is suitable to host geothermal wells or disposals of hazardous waste and in these cases the rock porosity and permeability are critical. Our detailed porosity and permeability data on variously deformed Lipnice granite yield a span of 5 orders of magnitude in permeability between the least and the most deformed facies. To facilitate the estimation of porosity and permeability in similar settings, we provide optical and chemical data on the characteristic minerals of each facies.
Granite is suitable to host geothermal wells or disposals of hazardous waste and in these cases...