Skip to Main Content
GEOREF RECORD

Petrogenesis of the Oligocene volcanics from the central Rhodope Massif (N. Greece)

George Eleftheriadis
Petrogenesis of the Oligocene volcanics from the central Rhodope Massif (N. Greece)
European Journal of Mineralogy (October 1995) 7 (5): 1169-1182

Abstract

These Oligocene volcanic rocks range in composition from basalts to rhyolites and belong to an orogenic calc-alkaline and shoshonitic series; they were erupted during an extensional post-collisional tectonic event. Mineralogical, petrological and geochemical data supported by isotopic data ( (super 87) Sr/ (super 86) Sr 0.706-0.707, Delta (super 18) O +6.2 to +7.70/00) indicate that the basic to intermediate rocks evolved mainly by assimilation/fractional crystallization of a parental magma which originated at the crust-mantle boundary. The acid rocks, however, have (super 87) Sr/ (super 86) Sr ratios 0.708-0.709 and Delta (super 18) O +8.8 to +12.90/00, not favouring a genetic link with the basic to intermediate rocks that can be explained by fractional crystallization; instead, disequilibrium phenocryst assemblages in high- (super 40) Ar/ (super 39) Ar dacites and many of the rhyolites lead to the conclusion that these rocks were derived by mixing of a basic and an anatectic silicic magma.


ISSN: 0935-1221
Serial Title: European Journal of Mineralogy
Serial Volume: 7
Serial Issue: 5
Title: Petrogenesis of the Oligocene volcanics from the central Rhodope Massif (N. Greece)
Affiliation: Thessaloniki University, Department of Mineralogy-Petrology-Economic Geology, Salonika, Greece
Pages: 1169-1182
Published: 199510
Text Language: English
Publisher: Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller), Stuttgart, Federal Republic of Germany
References: 48
Accession Number: 1996-001706
Categories: Igneous and metamorphic petrologyIsotope geochemistry
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 2 tables, geol. sketch maps
N40°40'00" - N41°45'00", E24°30'00" - E26°40'00"
N41°10'00" - N42°10'00", E23°30'00" - E25°30'00"
Country of Publication: Germany
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United KingdomTwickenhamUKUnited Kingdom
Update Code: 199601
Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal