Articles | Volume 9, issue 5
https://doi.org/10.5194/se-9-1141-2018
© 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-9-1141-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
27 Sep 2018
Research article |
| 27 Sep 2018
| 27 Sep 2018
Multiscale porosity changes along the pro- and retrograde deformation path: an example from Alpine slates
Ismay Vénice Akker
CORRESPONDING AUTHOR
Institute of Geological Sciences, University of Bern, Bern, 3012,
Switzerland
Josef Kaufmann
Empa, Swiss Federal Laboratories for Materials Testing
and Research, Dübendorf, 8600, Switzerland
Guillaume Desbois
Structural Geology,
Tectonics and Geomechanics, Energy and Mineral Resources Group, RWTH Aachen
University, 52056 Aachen, Germany
Jop Klaver
Structural Geology, Tectonics
and Geomechanics, Energy and Mineral Resources Group, RWTH Aachen University,
52056 Aachen, Germany
Map Microstructures and Pores GmbH, 52056 Aachen,
Germany
Janos L. Urai
Structural Geology,
Tectonics and Geomechanics, Energy and Mineral Resources Group, RWTH Aachen
University, 52056 Aachen, Germany
Alfons Berger
Institute of Geological Sciences, University of Bern, Bern, 3012,
Switzerland
Marco Herwegh
Institute of Geological Sciences, University of Bern, Bern, 3012,
Switzerland
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Short summary
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.
We studied porosity changes of slates from eastern Switzerland, which were deposited in an ocean...
