Mehedi, Masfique, Falzarano, Darryl, Seebach, Jochen, Hu, Xiaojie, Carpenter, Michael S, Schnittler, Hans-Joachim, Feldmann, Heinz
Journal of virology, June 2011, Vol.85(11), pp.5406-14
[Revue évaluée par les pairs]
MEDLINE/PubMed (U.S. National Library of Medicine)
Titre: Petrogenetic study of glaucophane schists and associated rocks from the Ile de Groix, Brittany, France Auteur:Carpenter, Michael S. N Editeur:
University of Oxford
The metamorphic rocks of the He de Groix are classified into four groups: (1) Aluminous schists; (2) Banded epidote schists; (3) Magnesian schists; (4) Massive metabasic schists, which are then subdivided on the basis of observed mineral paragenesis. Rocks of presumed igneous parentage (including the banded epidote schists, massive metabasic schists and some albitic aluminous schists) were selected for detailed chemical and mineralogical investigation, and twenty new whole rock analyses (major and trace elements) are given. Of the twenty analysed rocks, eight provided material for original microprobe analyses of the constituent minerals and sixteen were analysed for their Sr isotopic composition. Co-existing phengite, glaucophane, epidote and impure barroisite were separated from one of the analysed rocks (a glaucophanic eclogite) and used to obtain K-Ar and Rb-Sr (mineral isochron) radiometric ages. This dating work was supplemented by the inclusion of original K-Ar analyses...