Articles | Volume 9, issue 1
https://doi.org/10.5194/se-9-91-2018
© Author(s) 2018. 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-9-91-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
15 Feb 2018
Research article |
| 15 Feb 2018
| 15 Feb 2018
Multiphase boudinage: a case study of amphibolites in marble in the Naxos migmatite core
Simon Virgo
CORRESPONDING AUTHOR
Structural Geology, Tectonics and Geomechanics, RWTH Aachen University,
Lochnerstrasse 4–20, 52056 Aachen, Germany
Christoph von Hagke
Structural Geology, Tectonics and Geomechanics, RWTH Aachen University,
Lochnerstrasse 4–20, 52056 Aachen, Germany
Janos L. Urai
Structural Geology, Tectonics and Geomechanics, RWTH Aachen University,
Lochnerstrasse 4–20, 52056 Aachen, Germany
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Jessica Barabasch, Joyce Schmatz, Jop Klaver, Alexander Schwedt, and Janos L. Urai
Solid Earth, 14, 271–291, https://doi.org/10.5194/se-14-271-2023, https://doi.org/10.5194/se-14-271-2023, 2023
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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.
Trudy M. Wassenaar, Cees W. Passchier, Nora Groschopf, Anna Jantschke, Regina Mertz-Kraus, and Janos L. Urai
Biogeosciences Discuss., https://doi.org/10.5194/bg-2023-32, https://doi.org/10.5194/bg-2023-32, 2023
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.
Kevin Alexander Frings, Elco Luijendijk, István Dunkl, Peter Kukla, Nicolas Villamizar-Escalante, Herfried Madritsch, and Christoph von Hagke
EGUsphere, https://doi.org/10.5194/egusphere-2022-1323, https://doi.org/10.5194/egusphere-2022-1323, 2022
Preprint archived
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We use apatite (U-Th-Sm)/He thermochronologic on detrital grains sampled from a well to unravel the exhumation history of the northern Swiss Molasse Basin and reconcile seemingly contradicting previous studies. With single grain ages and provenance ages, we achieve to narrowly constrain exhumation magnitude and timing and embed previous results into a single consistent thermal history. This includes proof for hydrothermal activity and a contribution to the discussion on exhumation drivers.
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.
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.
Lisa Winhausen, Kavan Khaledi, Mohammadreza Jalali, Janos L. Urai, and Florian Amann
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.
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.
Lisa Winhausen, Jop Klaver, Joyce Schmatz, Guillaume Desbois, Janos L. Urai, Florian Amann, and Christophe Nussbaum
Solid Earth, 12, 2109–2126, https://doi.org/10.5194/se-12-2109-2021, https://doi.org/10.5194/se-12-2109-2021, 2021
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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.
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.
Elco Luijendijk, Leo Benard, Sarah Louis, Christoph von Hagke, and Jonas Kley
Solid Earth Discuss., https://doi.org/10.5194/se-2021-22, https://doi.org/10.5194/se-2021-22, 2021
Revised manuscript not accepted
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Our knowledge of the geological history of mountain belts relies strongly on thermochronometers, methods that reconstruct the temperature history of rocks found in mountain belts. Here we provide a new equation that describes the motion of rocks in a simplified, wedge-shaped representation of a mountain belt. The equation can be used to interpret thermochronometers and can help quantify the deformation, uplift and erosion history of mountain belts.
Samuel Mock, Christoph von Hagke, Fritz Schlunegger, István Dunkl, and Marco Herwegh
Solid Earth, 11, 1823–1847, https://doi.org/10.5194/se-11-1823-2020, https://doi.org/10.5194/se-11-1823-2020, 2020
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Based on thermochronological data, we infer thrusting along-strike the northern rim of the Central Alps between 12–4 Ma. While the lithology influences the pattern of thrusting at the local scale, we observe that thrusting in the foreland is a long-wavelength feature occurring between Lake Geneva and Salzburg. This coincides with the geometry and dynamics of the attached lithospheric slab at depth. Thus, thrusting in the foreland is at least partly linked to changes in slab dynamics.
Christopher Weismüller, Rahul Prabhakaran, Martijn Passchier, Janos L. Urai, Giovanni Bertotti, and Klaus Reicherter
Solid Earth, 11, 1773–1802, https://doi.org/10.5194/se-11-1773-2020, https://doi.org/10.5194/se-11-1773-2020, 2020
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We photographed a fractured limestone pavement with a drone to compare manual and automatic fracture tracing and analyze the evolution and spatial variation of the fracture network in high resolution. We show that automated tools can produce results comparable to manual tracing in shorter time but do not yet allow the interpretation of fracture generations. This work pioneers the automatic fracture mapping of a complete outcrop in detail, and the results can be used as fracture benchmark.
Heijn van Gent and Janos L. Urai
Solid Earth, 11, 513–526, https://doi.org/10.5194/se-11-513-2020, https://doi.org/10.5194/se-11-513-2020, 2020
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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.
We describe an outcrop of one fault abuting into another one. By careful measurement of structures in the overlapping deformation zones and separating them using published relative age data, we show a rotation in the local stress field resulting from the faults growing to each other
Christopher Weismüller, Janos L. Urai, Michael Kettermann, Christoph von Hagke, and Klaus Reicherter
Solid Earth, 10, 1757–1784, https://doi.org/10.5194/se-10-1757-2019, https://doi.org/10.5194/se-10-1757-2019, 2019
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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
Solid Earth, 10, 987–1013, https://doi.org/10.5194/se-10-987-2019, https://doi.org/10.5194/se-10-987-2019, 2019
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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.
Samuel Mock, Christoph von Hagke, Fritz Schlunegger, István Dunkl, and Marco Herwegh
Solid Earth Discuss., https://doi.org/10.5194/se-2019-56, https://doi.org/10.5194/se-2019-56, 2019
Revised manuscript not accepted
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Based on own and published age data, we can infer tectonic pulses along-strike the entire northern rim of the Central Alps between 12–4 million years. Although lithologic variations largely influence the local deformation pattern, the tectonic signal is remarkably consistent all the way from Lake Geneva to Salzburg. This might result from a deep-seated tectonic force and marks a change from dominantly vertical to large-scale horizontal tectonics in the late stage of Alpine orogeny.
Arne Grobe, Christoph von Hagke, Ralf Littke, István Dunkl, Franziska Wübbeler, Philippe Muchez, and Janos L. Urai
Solid Earth, 10, 149–175, https://doi.org/10.5194/se-10-149-2019, https://doi.org/10.5194/se-10-149-2019, 2019
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The Mesozoic sequences of the Oman mountains experienced only weak post-obduction overprint and deformation, and thus they offer a unique natural laboratory to study obduction. We present a study of pressure and temperature evolution in the passive continental margin under the Oman Ophiolite using numerical basin models calibrated with thermal maturity data, fluid-inclusion thermometry, and low-temperature thermochronology.
Ismay Vénice Akker, Josef Kaufmann, Guillaume Desbois, Jop Klaver, Janos L. Urai, Alfons Berger, and Marco Herwegh
Solid Earth, 9, 1141–1156, https://doi.org/10.5194/se-9-1141-2018, https://doi.org/10.5194/se-9-1141-2018, 2018
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We studied porosity changes of slates from eastern Switzerland, which were deposited in an ocean in front of the emerging Alps during the Cenozoic. The Alpine collision between the European and African plates brought the rocks from this basin to today’s position in the Alps. From the basin to the surface, the porosity first decreased down to a small number of round cavities (<1 vol%) to microfractures, and once at the surface, the porosity increased again due to the formation of macro-fractures.
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.
Michael Kettermann, Christoph von Hagke, Heijn W. van Gent, Christoph Grützner, and Janos L. Urai
Solid Earth, 7, 843–856, https://doi.org/10.5194/se-7-843-2016, https://doi.org/10.5194/se-7-843-2016, 2016
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We present an analogue modeling study on the interaction of pre-existing joints and normal faults using cohesive powder. We vary the angle between joints and a rigid basement fault and analyze interpreted map-view photographs at maximum displacement for various parameters and compare to nature. Results show a clear effect of increasing angle between joints and faults on fault geometry, fracture density and connectivity. These information can help interpreting fractured layers in the subsurface.
A. F. Raith, F. Strozyk, J. Visser, and J. L. Urai
Solid Earth, 7, 67–82, https://doi.org/10.5194/se-7-67-2016, https://doi.org/10.5194/se-7-67-2016, 2016
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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.
Cited articles
Abe, S. and Urai, J. L.: Discrete element modeling of boudinage: Insights on rock rheology, matrix flow, and evolution of geometry, J. Geophys. Res., 117, B01407, https://doi.org/10.1029/2011JB008555, 2012.
Abe, S., Urai, J. L., and Kettermann, M.: Fracture patterns in nonplane strain boudinage – insights from 3-D discrete element models, J. Geophys. Res.-Solid Earth, 118, 1304–1315, https://doi.org/10.1002/jgrb.50126, 2013.
Alsop, G. I. and Holdsworth, R. E.: Sheath folds as discriminators of bulk strain type, J. Struct. Geol., 28, 1588–1606, 2006.
Alsop, G. I. and Holdsworth, R. E.: Flow perturbation folding in shear zones, Geol. Soc. Lond. Spec. Publ., 272, 75–101, 2007.
Andriessen, P. A. M., Boelrijk, N., Hebeda, E. H., Priem, H. N. A., Verdurnen, E. T., and Verschure, R. H.: Dating the events of metamorphism and granitic magmatism in the Alpine Orogen of Naxos (Cyclades, Greece), Contrib. Mineral. Petrol., 69, 215–225, 1979.
Angelier, J.: Essai sur la neotectonique et les derniers stades tarditectoniques de l'arc egeen et de l'Egee meridionale, Bull. Soc. Geol. Fr., 7, 651–662, 1977.
Avigad, D.: High-pressure metamorphism and cooling on SE Naxos (Cyclades, Greece), Eur. J. Mineral., 10, 1309–1320, https://doi.org/10.1127/ejm/10/6/1309, 1998.
Avigad, D., Ziv, A., and Garfunkel, Z.: Ductile and brittle shortening, extension-parallel folds and maintenance of crustal thickness in the central, Tectonics, 20, 277–287, 2001.
Biot, M. A.: Theory of internal buckling of a confined multilayered structure, Geol. Soc. Am. Bull., 75, 563–568, 1964.
Bolhar, R., Ring, U., and Ireland, T. R.: Zircon in amphibolites from Naxos, Aegean Sea, Greece: origin, significance and tectonic setting, J. Metamor. Geol., 35.4, 413–434, https://doi.org/10.1111/jmg.12238, 2017.
Brichau, S., Ring, U., Ketcham, R. A., Carter, A., Stockli, D., and Brunel, M.: Constraining the long-term evolution of the slip rate for a major extensional fault system in the central Aegean, Greece, using thermochronology, Earth Planet. Sci. Lett., 241, 293–306, 2006.
Brun, J.-P., Faccenna, C., Gueydan, F., Sokoutis, D., Philippon, M., Kydonakis, K., and Gorini, C.: The two-stage Aegean extension, from localized to distributed, a result of slab rollback acceleration 1, Can. J. Earth Sci., 53, 1142–1157, 2016.
Buick, I. S.: Mylonite fabric development on Naxos, Greece, J. Struct. Geol., 13, 643–655, 1991.
Buick, I. S. and Holland, T. J. B.: The PTt path associated with crustal extension, Naxos, Cyclades, Greece, Geol. Soc. Lond. Spec. Publ., 43, 365–369, 1989.
Burkhard, M.: Calcite twins, their geometry, appearance and significance as stress-strain markers and indicators of tectonic regime: a review, J. Struct. Geol., 15, 351–368, https://doi.org/10.1016/0191-8141(93)90132-T, 1993.
Cao, S., Neubauer, F., Bernroider, M., Genser, J., Liu, J., and Friedl, G.: Low-grade retrogression of a high-temperature metamorphic core complex: Naxos, Cyclades, Greece, Geol. Soc. Am. Bull., 129, 93–117, 2017.
Casey, M., Dietrich, D., and Ramsay, J. G.: Methods for determining deformation history for chocolate tablet boudinage with fibrous crystals, Tectonophysics, 92, 211–239, https://doi.org/10.1016/0040-1951(83)90091-4, 1983.
Cobbold, P. R. and Quinquis, H.: Development of sheath folds in shear regimes, J. Struct. Geol., 2, 119–126, 1980.
Covey-Crump, S. J. and Rutter, E. H.: Thermally-induced grain growth of calcite marbles on Naxos Island, Greece, Contrib. Mineral. Petrol., 101, 69–86, 1989.
Dabrowski, M. and Grasemann, B.: Domino boudinage under layer-parallel simple shear, J. Struct. Geol., 68, 58–65, https://doi.org/10.1016/j.jsg.2014.09.006, 2014.
Duchene, S., Aissa, R., and Vanderhaeghe, O.: Pressure-temperature-time evolution of metamorphic rocks from Naxos (Cyclades, Greece): constraints from thermobarometry and Rb/Sr dating, Geodin. Acta, 19, 301–321, 2006.
Dürr, S., Altherr, R., Keller, J., Okrusch, M., and Seidel, E.: The median Aegean crystalline belt: stratigraphy, structure, metamorphism, magmatism, Alps Apennines Hell., 38, 455–476, 1978.
Ebert, A., Rieke-Zapp, D., Herwegh, M., Ramseyer, K., Gnos, E., and Decrouez, D.: Microstructures of coarse-grained marbles, analyzed using a new technique based on the bireflectance of calcite, Tectonophysics, 463, 175–184, https://doi.org/10.1016/j.tecto.2008.09.041, 2009.
Gardner, R. L., Piazolo, S., and Daczko, N. R.: Pinch and swell structures: evidence for strain localisation by brittle-viscous behaviour in the middle crust, Solid Earth, 6, 1045–1061, https://doi.org/10.5194/se-6-1045-2015, 2015.
Gautier, P., Brun, J.-P., and Jolivet, L.: Structure and kinematics of Upper Cenozoic extensional detachment on Naxos and Paros (Cyclades Islands, Greece), Tectonics, 12, 1180–1194, https://doi.org/10.1029/93TC01131, 1993.
Gautier, P., Brun, J.-P., Moriceau, R., Sokoutis, D., Martinod, J., and Jolivet, L.: Timing, kinematics and cause of Aegean extension: a scenario based on a comparison with simple analogue experiments, Tectonophysics, 315, 31–72, 1999.
Ghosh, S. K.: Theory of chocolate tablet boudinage, J. Struct. Geol., 10, 541–553, https://doi.org/10.1016/0191-8141(88)90022-3, 1988.
Goldstein, A. G.: Factors affecting the kinematic interpretation of asymmetric boudinage in shear zones, J. Struct. Geol., 10, 707–715, https://doi.org/10.1016/0191-8141(88)90078-8, 1988.
Goscombe, B. D. and Passchier, C. W.: Asymmetric boudins as shear sense indicators – an assessment from field data, J. Struct. Geol., 25, 575–589, 2003.
Goscombe, B. D., Passchier, C. W., and Hand, M.: Boudinage classification: end-member boudin types and modified boudin structures, J. Struct. Geol., 26, 739–763, https://doi.org/10.1016/j.jsg.2003.08.015, 2004.
Grasemann, B., Schneider, D. A., Stöckli, D. F., and Iglseder, C.: Miocene bivergent crustal extension in the Aegean: Evidence from the western Cyclades (Greece), Lithosphere, L164.1, 23–29, https://doi.org/10.1130/L164.1, 2011.
Harker, A.: IV. – On Local Thickening of Dykes and Beds by Folding, Geol. Mag., 6, 69–70, https://doi.org/10.1017/S0016756800175910, 1889.
Hinsbergen, D. J. and Schmid, S. M.: Map view restoration of Aegean–West Anatolian accretion and extension since the Eocene, Tectonics, 31, TC5005, https://doi.org/10.1029/2012TC003132, 2012.
Ingram, G. M. and Urai, J. L.: Top-seal leakage through faults and fractures: the role of mudrock properties, Geol. Soc. Lond. Spec. Publ., 158, 125–135, 1999.
Jansen, J. B. H.: Geological Map of Greece, Island of Naxos (1: 50,000), Inst. Geol. Miner. Resour. Athens, 1973.
Jansen, J. B. H.: Metamorphism on Naxos, Greece, Diss., Utrecht, 1977.
Jansen, J. B. H. and Schuiling, R. D.: Metamorphism on Naxos; petrology and geothermal gradients, Am. J. Sci., 276, 1225–1253, 1976.
John, B. E. and Howard, K. A.: Rapid extension recorded by cooling-age patterns and brittle deformation, Naxos, Greece, J. Geophys. Res.-Solid Earth, 100, 9969–9979, 1995.
Jolivet, L. and Brun, J.-P.: Cenozoic geodynamic evolution of the Aegean, Int. J. Earth Sci., 99, 109–138, https://doi.org/10.1007/s00531-008-0366-4, 2010.
Jolivet, L., Brun, J.-P., Gautier, P., Lallemant, S., and Patriat, M.: 3D-kinematics of extension in the Aegean region from the early Miocene to the Present, insights from the ductile crust, Bull. Soc. Geol. Fr., 165, 195–209, 1994.
Jolivet, L., Famin, V., Mehl, C., Parra, T., Aubourg, C., Hébert, R., and Philippot, P.: Strain localization during crustal-scale boudinage to form extensional metamorphic domes in the Aegean Sea, Geol. Soc. Am. Spec. Pap., 380, 185–210, 2004.
Jolivet, L., Faccenna, C., Huet, B., Lecomte, E., Labrousse, L., Denèle, Y., Le Pourhiet, L., Lacombe, O., Burov, E. B., Meyer, B., Suc, J., Popescu, S., Monié, P., Philippon, M., Gueydan, F., Brun, J., Paul, A., Salaün, G., and Armijo, R.: Aegean tectonics, a record of slab-overriding plate interactions, in AGU Fall Meeting Abstracts, available at: http://adsabs.harvard.edu/abs/2010AGUFM.T13G..04J (last access: 7 February 2018), 2010.
Jolivet, L., Faccenna, C., Huet, B., Labrousse, L., Le Pourhiet, L., Lacombe, O., Lecomte, E., Burov, E., Dentèle, Y., Brun, J.-P., Gueydan, F., Philippon, M., Paul, A., Salaün, G., Karabulut, H., Piromallo, C., Monié, P., Okay, A. I., Oberhänsli, R., Pourteau, A., Augier, R., Garenne, Leslie, and Driussi, O.: Aegean tectonics: Strain localisation, slab tearing and trench retreat, Tectonophysics, 597, 1–33, 2013.
Jolivet, L., Menant, A., Sternai, P., Rabillard, A., Arbaret, L., Augier, R., Laurent, V., Beaudoin, A., Grasemann, B., and Huet, B.: The geological signature of a slab tear below the Aegean, Tectonophysics, 659, 166–182, 2015.
Keay, S., Lister, G., and Buick, I.: The timing of partial melting, Barrovian metamorphism and granite intrusion in the Naxos metamorphic core complex, Cyclades, Aegean Sea, Greece, Tectonophysics, 342, 275–312, https://doi.org/10.1016/S0040-1951(01)00168-8, 2001.
Kenis, I., Sintubin, M., Muchez, P., and Burke, E. A. J.: The “boudinage” question in the High-Ardenne Slate Belt (Belgium): a combined structural and fluid-inclusion approach, Tectonophysics, 348, 93–110, https://doi.org/10.1016/S0040-1951(01)00251-7, 2002.
Krabbendam, M., Urai, J. L., and van Vliet, L. J.: Grain size stabilisation by dispersed graphite in a high-grade quartz mylonite: an example from Naxos (Greece), J. Struct. Geol., 25, 855–866, 2003.
Kruckenberg, S. C., Ferré, E. C., Teyssier, C., Vanderhaeghe, O., Whitney, D. L., Seaton, N. C., and Skord, J. A.: Viscoplastic flow in migmatites deduced from fabric anisotropy: An example from the Naxos dome, Greece, J. Geophys. Res.-Solid Earth, 115, B09401, https://doi.org/10.1029/2009JB007012, 2010.
Kruckenberg, S. C., Vanderhaeghe, O., Ferré, E. C., Teyssier, C., and Whitney, D. L.: Flow of partially molten crust and the internal dynamics of a migmatite dome, Naxos, Greece, Tectonics, 30, TC3001, https://doi.org/10.1029/2010TC002751, 2011.
Lecomte, E., Jolivet, L., Lacombe, O., Denèle, Y., Labrousse, L., and Le Pourhiet, L.: Geometry and kinematics of Mykonos detachment, Cyclades, Greece: Evidence for slip at shallow dip, Tectonics, 29, TC5012, https://doi.org/10.1029/2009TC002564, 2010.
Lister, J. R. and Kerr, R. C.: Fluid-mechanical models of crack propagation and their application to magma transport in dykes, J. Geophys. Res.-Solid Earth, 96, 10049–10077, https://doi.org/10.1029/91JB00600, 1991.
Lister, G. S., Banga, G., and Feenstra, A.: Metamorphic core complexes of Cordilleran type in the Cyclades, Aegean Sea, Greece, Geology, 12, 221, https://doi.org/10.1130/0091-7613(1984)12<221:MCCOCT>2.0.CO;2, 1984.
Llorens, M.-G., Bons, P. D., Griera, A., and Gomez-Rivas, E.: When do folds unfold during progressive shear?, Geology, 41, 563–566, 2013.
Lohest, M.: De l'origine des veines et des géodes des terrains primaires de Belgique, Ann. Soc. Géol. Belg. B, 36, 275–282, 1909.
Maeder, X., Passchier, C. W., and Koehn, D.: Modelling of segment structures: Boudins, bone-boudins, mullions and related single- and multiphase deformation features, J. Struct. Geol., 31, 817–830, https://doi.org/10.1016/j.jsg.2009.05.013, 2009.
Malandri, C., Soukis, K., Maffione, M., Özkaptan, M., Vassilakis, E., Lozios, S., and Hinsbergen, D. J. J. van: Vertical-axis rotations accommodated along the Mid-Cycladic lineament on Paros Island in the extensional heart of the Aegean orocline (Greece), Lithosphere, 9, 78–99, https://doi.org/10.1130/L575.1, 2017.
Mandal, N., Dhar, R., Misra, S., and Chakraborty, C.: Use of boudinaged rigid objects as a strain gauge: Insights from analogue and numerical models, J. Struct. Geol., 29, 759–773, https://doi.org/10.1016/j.jsg.2007.02.007, 2007.
Marques, F. O., Guerreiro, S. M., and Fernandes, A. R.: Sheath fold development with viscosity contrast: Analogue experiments in bulk simple shear, J. Struct. Geol., 30, 1348–1353, https://doi.org/10.1016/j.jsg.2008.07.001, 2008.
Marques, F. O., Burg, J.-P., Lechmann, S. M., and Schmalholz, S. M.: Fluid-assisted particulate flow of turbidites at very low temperature: A key to tight folding in a submarine Variscan foreland basin of SW Europe, Tectonics, 29, TC2005, https://doi.org/10.1029/2008TC002439, 2010.
Marques, F. O., Fonseca, P. D., Lechmann, S., Burg, J.-P., Marques, A. S., Andrade, A. J. M., and Alves, C.: Boudinage in nature and experiment, Tectonophysics, 526–529(Supplement C), 88–96, https://doi.org/10.1016/j.tecto.2011.08.017, 2012.
Martin, L., Duchêne, S., Deloule, E., and Vanderhaeghe, O.: The isotopic composition of zircon and garnet: a record of the metamorphic history of Naxos, Greece, Lithos, 87, 174–192, 2006.
Martin, L. A., Duchêne, S., Deloule, E., and Vanderhaeghe, O.: Mobility of trace elements and oxygen in zircon during metamorphism: consequences for geochemical tracing, Earth Planet. Sci. Lett., 267, 161–174, 2008.
Menant, A., Jolivet, L., Augier, R., and Skarpelis, N.: The North Cycladic Detachment System and associated mineralization, Mykonos, Greece: Insights on the evolution of the Aegean domain, Tectonics, 32, 433–452, 2013.
Mercier, J. L., Carey, E., Philip, H., and Sorel, D.: La néotectonique plio-quaternaire de l'arc égéen externe et de la mer Egée et ses relations avec la séismicité, Bull. Soc. Geol. Fr., 7, 355–372, 1976.
Pamplona, J. and Rodrigues, B. C.: Kinematic interpretation of shearband boudins: New parameters and ratios useful in HT simple shear zones, J. Struct. Geol., 33, 38–50, https://doi.org/10.1016/j.jsg.2010.10.004, 2011.
Pamplona, J., Rodrigues, B. C., and Fernández, C.: Folding as a precursor of asymmetric boudinage in shear zones affecting migmatitic terranes, Geogaceta, 55, 15–18, 2014.
Papanikolaou, D.: Contribution to the geology of Aegean Sea: the island of Paros, Ann. Geol. Pays Hell., 30, 65–96, 1980.
Peters, M., Berger, A., and Herwegh, M.: Microstructural evidence for the initiation of pinch-and-swell structures in ductile rocks, Geotecton. Res., 97, 153–153, 2015.
Philippon, M., Brun, J.-P., and Gueydan, F.: Tectonics of the Syros blueschists (Cyclades, Greece): From subduction to Aegean extension, Tectonics, 30, TC4001, https://doi.org/10.1029/2010TC002810, 2011.
Philippon, M., Brun, J.-P., and Gueydan, F.: Deciphering subduction from exhumation in the segmented Cycladic Blueschist Unit (Central Aegean, Greece), Tectonophysics, 524–525, 116–134, https://doi.org/10.1016/j.tecto.2011.12.025, 2012.
Philippon, M., Brun, J.-P., Gueydan, F., and Sokoutis, D.: The interaction between Aegean back-arc extension and Anatolia escape since Middle Miocene, Tectonophysics, 631, 176–188, 2014.
Price, N. J. and Cosgrove, J. W.: Analysis of Geological Structures, Cambridge University Press, 1990.
Poisel, R., Kolenprat, B., Bertagnoli, M., Ahmadabadi, M., Grasemann, B., and Hödlmoser, N.: The rockslide hazard in the former quarry near Spitz and its foreland/Die Felssturzgefahr im ehemaligen Tagebau Spitz ad Donau und dessen Vorland, Geomech. Tunn., 9, 497–507, 2016.
Pollard, D. D. and Fletcher, R. C.: Fundamentals of structural geology, Cambridge University Press, 2005.
Ramberg, H.: Natural and Experimental Boudinage and Pinch-and-Swell Structures, J. Geol., 63, 512–526, https://doi.org/10.1086/626293, 1955.
Ramsay, A. C.: The Geology of North Wales. Memoirs of the Geological Survey of Great Britain 3, available at: https://www.abebooks.co.uk/book-search/title/the-geology-of-north-wales/author/ramsay-a-c/ (last access: 5 June 2017), 1881.
Ramsay, J. G.: Folding and Fracturing of Rocks., McGraw-Hill, New York, 568, Scientific Research Publish, available at: http://www.scirp.org/ (S(351jmbntvnsjt1aadkposzje))/reference/ ReferencesPapers.aspx?ReferenceID=1688431 (last access: 6 June 2017), 1967.
Reber, J. E., Schmalholz, S. M., and Burg, J.-P.: Stress orientation and fracturing during three-dimensional buckling: Numerical simulation and application to chocolate-tablet structures in folded turbidites, SW Portugal, Tectonophysics, 493, 187–195, 2010.
Renjith, A. R., Mamtani, M. A., and Urai, J. L.: Fabric analysis of quartzites with negative magnetic susceptibility – Does AMS provide information of SPO or CPO of quartz?, J. Struct. Geol., 82(Supplement C), 48–59, https://doi.org/10.1016/j.jsg.2015.11.005, 2016.
Rey, P. F., Teyssier, C., Kruckenberg, S. C., and Whitney, D. L.: Viscous collision in channel explains double domes in metamorphic core complexes, Geology, 39, 387–390, 2011.
Ridley, J.: Parallel stretching lineations and fold axes oblique to a shear displacement direction – a model and observations, J. Struct. Geol., 8, 647–653, https://doi.org/10.1016/0191-8141(86)90070-2, 1986.
Ring, U. and Layer, P. W.: High-pressure metamorphism in the Aegean, eastern Mediterranean: Underplating and exhumation from the Late Cretaceous until the Miocene to Recent above the retreating Hellenic subduction zone, Tectonics, 22, 1022, https://doi.org/10.1029/2001TC001350, 2003.
Ring, U., Glodny, J., Will, T., and Thomson, S.: The Hellenic subduction system: high-pressure metamorphism, exhumation, normal faulting, and large-scale extension, Annu. Rev. Earth Planet. Sci., 38, 45–76, 2010.
Rivalta, E., Taisne, B., Bunger, A. P., and Katz, R. F.: A review of mechanical models of dike propagation: Schools of thought, results and future directions, Tectonophysics, 638(Supplement C), 1–42, https://doi.org/10.1016/j.tecto.2014.10.003, 2015.
Schenk, O., Urai, J. L., and Evans, B.: The effect of water on recrystallization behavior and grain boundary morphology in calcite–observations of natural marble mylonites, J. Struct. Geol., 27, 1856–1872, https://doi.org/10.1016/j.jsg.2005.05.015, 2005.
Schenk, O., Urai, J. L., and van der Zee, W.: Evolution of boudins under progressively decreasing pore pressure – A case study of pegmatites enclosed in marble deforming at high grade metamorphic conditions, Naxos, Greece, Am. J. Sci., 307, 1009–1033, https://doi.org/10.2475/07.2007.03, 2007.
Schmalholz, S. M. and Maeder, X.: Pinch-and-swell structure and shear zones in viscoplastic layers, J. Struct. Geol., 37, 75–88, 2012.
Schmalholz, S. M., Schmid, D. W., and Fletcher, R. C.: Evolution of pinch-and-swell structures in a power-law layer, J. Struct. Geol., 30, 649–663, https://doi.org/10.1016/j.jsg.2008.01.002, 2008.
Seward, D., Vanderhaeghe, O., Siebenaller, L., Thomson, S., Hibsch, C., Zingg, A., Holzner, P., Ring, U. and Duchêne, S.: Cenozoic tectonic evolution of Naxos Island through a multi-faceted approach of fission-track analysis, Geol. Soc. Lond. Spec. Publ., 321, 179–196, https://doi.org/10.1144/SP321.9, 2009.
Siebenaller, L., Boiron, M.-C., Vanderhaeghe, O., Hibsch, C., Jessell, M. W., Andre-Mayer, A.-S., France-Lanord, C., and Photiades, A.: Fluid record of rock exhumation across the brittle–ductile transition during formation of a Metamorphic Core Complex (Naxos Island, Cyclades, Greece), J. Metamorph. Geol., 31, 313–338, https://doi.org/10.1111/jmg.12023, 2013.
Urai, J. L. and Feenstra, A.: Weakening associated with the diaspore–corundum dehydration reaction in metabauxites: an example from Naxos (Greece), J. Struct. Geol., 23, 941–950, https://doi.org/10.1016/S0191-8141(00)00165-6, 2001.
Urai, J. L., Schuiling, R. D., and Jansen, J. B. H.: Alpine deformation on Naxos (Greece), Geol. Soc. Lond. Spec. Publ., 54, 509–522, 1990.
Vanderhaeghe, O.: Structural development of the Naxos migmatite dome, Geol. Soc. Am. Spec. Pap., 380, 211–227, 2004.
Van Noten, K. and Sintubin, M.: Linear to non-linear relationship between vein spacing and layer thickness in centimetre-to decimetre-scale siliciclastic multilayers from the High-Ardenne slate belt (Belgium, Germany), J. Struct. Geol., 32, 377–391, 2010.
Virgo, S., Abe, S., and Urai, J. L.: Extension fracture propagation in rocks with veins: Insight into the crack-seal process using Discrete Element Method modeling, J. Geophys. Res.-Solid Earth, 118, 5236–5251, https://doi.org/10.1002/2013JB010540, 2013.
Virgo, S., Abe, S., and Urai, J. L.: The evolution of crack seal vein and fracture networks in an evolving stress field: Insights from Discrete Element Models of fracture sealing, J. Geophys. Res.-Solid Earth, 119, 8708–8727, https://doi.org/10.1002/2014JB011520, 2014.
Virgo, S., Heup, T., Urai, J. L., and Berlage, T.: Virtual Petrography (ViP)-A virtual microscope for the geosciences, in EGU General Assembly Conference Abstracts, Vol. 18, p. 14669, available at: http://adsabs.harvard.edu/abs/2016EGUGA..1814669V, 2016.
von Hagke, C., Bamberg, B., Virgo, S., and Urai, J. L.: Outcrop-scale tomography: insights into the 3D structure of multiphase boudins, J. Struct. Geol., in press, 2018.
Walcott, C. and White, S.: Constraints on the kinematics of post-orogenic extension imposed by stretching lineations in the Aegean region, Tectonophysics, 298, 155–175, 1998a.
Walcott, C. R. and White, S. H.: Constraints on the kinematics of post-orogenic extension imposed by stretching lineations in the Aegean region, Tectonophysics, 298, 155–175, https://doi.org/10.1016/S0040-1951(98)00182-6, 1998b.
Wijbrans, J. R. and McDougall, I.: Metamorphic evolution of the Attic Cycladic Metamorphic Belt on Naxos (Cyclades, Greece) utilizing 40Ar/39Ar age spectrum measurements, J. Metamorph. Geol., 6, 571–594, 1988.
Zulauf, J. and Zulauf, G.: Coeval folding and boudinage in four dimensions, J. Struct. Geol., 27, 1061–1068, 2005.
Zulauf, G., Gutiérrez-Alonso, G., Kraus, R., Petschick, R., and Potel, S.: Formation of chocolate-tablet boudins in a foreland fold and thrust belt: A case study from the external Variscides (Almograve, Portugal), J. Struct. Geol., 33, 1639–1649, 2011a.
Zulauf, J., Zulauf, G., Kraus, R., Gutiérrez-Alonso, G., and Zanella, F.: The origin of tablet boudinage: Results from experiments using power–law rock analogs, Tectonophysics, 510, 327–336, 2011b.
Short summary
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.
The marbles of the migmatitic dome on the island Naxos contain deformed layers of amphibolite...
