The leucogranites of southern Brittany; origin by faulting, frictional heating, fluid flux and fractional melting

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Authors:Strong, D. F.; Hanmer, S. K.
Author Affiliations:Primary:
Mem. Univ. Newfoundland, Dep. Geol., Saint John's, NL, Canada
Other:
Dalhousie Univ., Canada
Volume Title:Peraluminous granites
Volume Authors:Clarke, D. B., editor
Source:The Canadian Mineralogist, Vol.19(Part 1), p.163-176; Joint annual meeting of the Geological Association of Canada and the Mineralogical Association of Canada, Halifax, NS, Canada, May 19, 1980, edited by D. B. Clarke. Publisher: Mineralogical Association of Canada, Ottawa, ON, Canada. ISSN: 0008-4476
Publication Date:1981
Note:In English with French summary. 80 refs.; illus. incl. 1 table, geol. sketch map
Summary:Hercynian biotite-muscovite granites and granodiorites were repeatedly intruded along the south Armorican shear zone of Brittany, France, during orogenesis. Chemical analyses (10) of major and minor elements show no significant differences among the bodies. The generation of these intrusions is explained by fractional melting along fault zones and/or by lowering of melting temperatures due to influx of water along fault zones. [S.A.K.]
Subjects:Alkaline earth metals; Anatexis; Chemical composition; Fractional crystallization; Genesis; Granites; Igneous rocks; Isotopes; Leucogranite; Magmas; Metals; Orogeny; Partial melting; Petrography; Petrology; Plutonic rocks; Shear zones; Sr-87/Sr-86; Stable isotopes; Strontium; Trace elements; Variscan Orogeny; Armorican Massif; Brittany; Europe; France; Western Europe; Evolution; Ratios
Coordinates:N470000 N490000 W0020000 W0044000
Abstract Numbers:86M/0934
Record ID:1982014433
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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