Dataset : Quantitative X-ray mapping of brittle shear zones precursors

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Collection

Quotation

Thomas Leydier ; Philippe Goncalves ; Julie Albaric (2020): Quantitative X-ray mapping of brittle shear zones precursors. Laboratoire Chrono-environnement. FR-18008901306731-2020-08-21

General metadata

Identifier : local : FR-18008901306731-2020-08-21
Description :
Objective : characterize the chemical zonings in plagioclase and garnet related to fluid-rock interactions within a shear zone precursor
Disciplines :
geochemistry & geophysics (sciences of the universe), geology (sciences of the universe), mineralogy (sciences of the universe)
Keywords :

Dates :
Data acquisition : May 2017
Metadata record :
Creation : 21 Aug 2020

Update periodicity : no update
Language : English (eng)
Additional information :
Données produites dans le cadre de la thèse de Thomas Leydier, encadrée par Philippe Goncalves (maître de conférences HDR en géologie au laboratoire Chrono-environnement) et Julie Albaric (maître de conférences en géophysique et sismologie au laboratoire Chrono-environnement).
Audience : University: master, Research

Coverages

Spatial coverage :

Time coverage :

  • Période Alpine: between -45 Ma and -30 Ma

Administrative metadata

Data creatorsAffiliation
Thomas LeydierChrono-environnement (FRA)
Philippe GoncalvesChrono-environnement (FRA)
Julie AlbaricChrono-environnement (FRA)
ContributorAffiliationRole
Pierre LanariInstitut für Geologie (CHE)data collector
Publisher : Laboratoire Chrono-environnement
Science contact : Philippe Goncalves website e-mail
Project and funders :
Access : restricted
Access details :
To access the data, please contact the scientific data manager.

Technical metadata

Formats : image/bmp, image/tiff, text/cpr, text/ctf
Data acquisition methods :
  • Observational data :
    High‐resolution X‐ray maps have been acquired using a JEOL‐8200 microprob. Operating conditions were 15 keV, 100 nA, with a pixel resolution of 1 µm and a dwell‐time of 100 ms/pixel. A standardization step is required in order to convert measured X‐ray intensities (photon counts per pixel) into oxide weight per cent concentrations. For each phase, an average of 10 spot analyses were acquired along several transects, at high angle from the grain boundaries, to take into account the mineral heterogeneities. These spot analyses were used as internal standards to obtain the quantified maps (element concentration or phase component proportion), using the software solution XMapTools 2.4.3.
Datatype : Dataset

Publications

  • Leydier T, Goncalves P, Lanari P, Oliot E. On the petrology of brittle precursors of shear zones – An expression of concomitant brittle deformation and fluid–rock interactions in the ‘ductile’ continental crust? J Metamorph Geol. 2019;37:1129– 1149. (doi:10.1111/jmg.12504)
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