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Record: oai:ARNO:505945

AuthorH.G. Avé Lallemant
TitlePetrology, petrofabrics, and structural geology of the Sierra de Outes — Muros Region (Prov. La Coruña, Spain)
JournalLeidse Geologische Mededelingen
Volume33
Year1965
Issue1
Pages147-175
ISSN0075-8639
AbstractThe petrography and the structural geology of some parts of the ”Hercynian” orogene of western Galicia is discussed. The oldest rocks are metasediments and orthogneisses which have some relic-structures of an older orogeny. The ”Hercynian” migmatization gave rise to a large series of anatectic granite formations. Three ”Hercynian” phases of deformation, all with a WSW-ENE-directed stress-field, have been distinguished. Younger wrench-faults are originated by the same stress-field. Some fabric analyses show that the first two phases have a sub-vertical, NNW-SSE-striking schistosity, each with a horizontal B-axis, and that the third phase has a vertical N-S-striking cleavage with a vertical B’-axis. The migmatization took place after the first phase.
Document typearticle
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pdf document http://www.repository.naturalis.nl/document/549712