Dataset : Suretta nappe shear zones



Philippe Goncalves ; Jean-Charles Poilvet (2021): Suretta nappe shear zones. Laboratoire Chrono-environnement. doi:10.1016/j.jsg.2016.02.015

General metadata

Identifier : local : FR-18008901306731-2021-06-09 external : doi:10.1016/j.jsg.2016.02.015
Description :
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 shear zone, bulk compositions, crystallographic orientations of deformed quartz and forward thermodynamic modelling of phase relations
Disciplines :
geology (sciences of the universe), geosciences, multidisciplinary (sciences of the universe), mineralogy (sciences of the universe)
Keywords :

Dates :
Data acquisition : from 15 Sep 2011 to 29 Feb 2016
Metadata record :
Creation : 9 Jun 2021

Update periodicity : no update
Language : English (eng)
Audience : University: licence, University: master, Research, Informal Education


Spatial coverage :

  • Splügen Pass: latitude 46° 30' 29" N, longitude 9° 20' 14" E

Time coverage :

  • âge du protolithe: 268 Ma
  • âge de la déformation : 46 Ma

Administrative metadata

Data creatorsAffiliation
Philippe GoncalvesChrono-environnement (FRA)
Jean-Charles PoilvetChrono-environnement (FRA)
Didier MarquerChrono-environnement (FRA)data collector
Pierre TrapChrono-environnement (FRA)related person
Emilien OliotGéosciences Montpellier (FRA)data collector
Pierre LanariInstitut für Geologie (CHE)data collector
Jean-Marc HénotLMV (FRA)data collector
Publisher : Laboratoire Chrono-environnement
Science contact : Philippe Goncalves website e-mail
Computing contact : Philippe Goncalves website e-mail
Projects and funders :
Access : restricted
Access details :
To access the data, please contact the scientific data manager.

Technical metadata

Formats : application/pdf, application/, image/bmp, image/jpeg, image/tiff, text/csv
Data acquisition methods :
  • Observational data :
    Optical microscopy was performed on Axioskop 40 Zeiss microscope under plane and crossed-polarized light. Electron microscopy was performed on a FEI Quanta 450W SEM at the MIMENTO plateform belonging to the French RENATECH network. Observations were performed under backscattered electron images.
  • Experimental data :
    Crystallographic preferred orientations (CPO) of quartz were determined by electron backscattered diffraction on single spots or over a gridded area. Single spot analysis were carried out on a scanning electron microscope (SEM) Tescan Vega 2 XMU Low Vacuum at the Ecole et Observatoire des Sciences de la Terre of Strasbourg, France, using the electron backscattered diffraction method (EBSD, coupled with TSL OIM Analysis software). The map was carried out on a SEM JEOL JSM-5910 LV associated with a Bruker Nano, Quantax CrystAlign EDS-EBSD, at the Laboratoire Magmas et Volcans of Clermont-Ferrand, France. A step size of 0.83 m m on a 800 x 600
    pixel map was used, so that deformation within the small quartz grains (<25 m m), can be detected. EBSD patterns were indexed and processed with the Bruker Esprit 1.9.4 EBSD software.
  • Simulation or computational data :
    Forward phase relation modelling was computed with Perple_X 6.6.8 (Connolly, 2005) in the Na2O-CaO-K2O-FeO-MgO-Al2O3-SiO2-H2O-O system using the updated 2002 version of the internally-consistent thermodynamic database of Holland and Powell (1998). The system is assumed to be water saturated in order to enhance chemical mass transfer. The oxidation state has been quantified using P-XFe2O3 phase diagram section
    computed at 450°C (XFe2O3 = Fe2O3 /(FeO + Fe2O3)). Bulk compositions were computed with an average protolith composition based on 17 XRF analysis from Challandes (2001) and (2) a local effective composition quantified on the mature shear zone affecting the matrix. This local composition has been estimated with high-resolution quantified electron microprobe X-ray maps using the XMaptools 1.6.5 software. Solid solutions are provided in a table
Datatype : Dataset


Terms of use