Plagiogranite and leucogranite relationships in an ophiolite of the Tethys ocean

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Authors:Tsikouras, B.; Hatzipanagiotou, K.; Seymour, K. S.
Author Affiliations:Primary:
University of Patras, Patras, Greece
Volume Title:Neues Jahrbuch für Mineralogie. Monatshefte
Source:Neues Jahrbuch für Mineralogie. Monatshefte, 1998(1), p.13-35. Publisher: E. Schweizerbart'sche Verlagsbuchhandlung, Stuttgart, Federal Republic of Germany. ISSN: 0028-3649
Publication Date:1998
Note:In English; illus., incl. 2 tables, geol. sketch map
Summary:Two associations of granitic rocks occur in a diorite assemblage in the ophiolite of Samothraki Island: chemical analyses for major, trace and REE are given. The plagiogranites are products of fractional crystallization of plagioclase and hornblende with minor zircon, apatite and titanomagnetite-ilmenite from a diorite parent. The leucogranites are richer in certain incompatible elements and LREE than the plagiogranites, and are thought to have been derived after partial melting of the plagiogranite. Their chemical affinity involves both crustal and mantle components, suggesting that they have been formed during thermal relaxation of the lower crust and adiabatic decompression in the upper mantle, at the late stages of collision. [R.A.H.]
Subjects:Diorites; Genesis; Granites; Igneous rocks; Leucogranite; Ophiolite; Petrography; Plagiogranite; Plutonic rocks; Tethys; Aegean Islands; Europe; Greece; Greek Aegean Islands; Mediterranean region; Southern Europe
Abstract Numbers:98M/3090
Record ID:2001003715
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom, Reference includes data from Geoline, Bundesanstalt fur Geowissenschaften und Rohstoffe
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