Petrochemical systematization of late Kainozoic volcanites of Alpine fold-thrust belt of Eastern Europe
N. Kostenko, M. Tolstoy and O. Shabatura
Event name: 15th EAGE International Conference on Geoinformatics - Theoretical and Applied Aspects
Session: 3. Geological Modeling
Publication date: 10 May 2016
Info: Extended abstract, PDF ( 1.16Mb )
Price: € 20
On the basis of data comparison with statistical methods direct correlation connections between alcali basalts of the Pannon Depression and the Western Carpathian and their rock analogues of Georgian Massif, acid volcanic rocks of Tyrniauz district of Elbrus region and Carpathian-Dinarian province have been determined. Moreover for normal alcality basalts as well as for intermediate rocks such connects have not appeared on interregional comparison. There are supposed to determine 2 formation types: basalt-andesibasalt-andesithes (basalt-andesithes) and dacythes-rhyolites. Observed gap in composition of explored rocks indicates the interrupted character of petrochemical evolution of mafic-intermediate and acid volcanic buildups and therefore of absence of direct genetic connection between them. Taking into consideration geological data and results of analysis of discriminate diagrams assumed that basalts have mantle petrogenesis, andesithebasalts and andesithes – mantle-core and so dacythes-rhyolites particularly core genesis. According to results of petrochemical systematization is defined to be in a region a directional increasing their alkalinity in row of Alpine fold-thrust belt of Eastern Europe: Carpathian-Dinarian → The Great Caucasus and PreCaucasus → Western Caucasus → Armenian Upland.