Faults and shear zones

Permalink of the collection:
https://dataosu.obs-besancon.fr/coll/18

Structural, textural, mineral, chemical data on various faults and shear zones.

Creation of collection : 9 Jan 2017

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Suretta nappe shear zones

The database "Suretta nappe shear zones" contains petrological, structural and microtextural data of millimetre-scale shear zones from the Roffna rhyolite (Suretta nappe, Eastern Alps, Switzerland). The data consist of structural orientations, optical and electronic images of the mineralogy of the ...

Vignette

EBSD mapping of shear zones strain gradient - deformation mechanisms

Objective : characterize the deformation mechanisms and the crystallographic fabrics within homogeneously deformed granitic samples.

Vignette

EBSD mapping of brittle shear zones precursors

Objective : microtextural characterization within a shear zone brittle precursor

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EBSD mapping of shear zones strain gradient - seismic anisotropy

Dataset
Collected date : from Feb 2019 to Jun 2019

Objective : calculate the crystallographic preferred orientation (CPO) of each mineral phase in order to rebuild the elastic properties of the polyminéralic aggregates.

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Microprobe analysis on a brittle shear zone precursor

Objective : compare the chemical compositions of minerals within the brittle precursor and in the host rock.

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Quantitative X-ray mapping of brittle shear zones precursors

Objective : characterize the chemical zonings in plagioclase and garnet related to fluid-rock interactions within a shear zone precursor

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