GEOCHEMISTRY OF GRANATE-BIOTITE AND BIOTI TE-PLAGIOCLASE GNEISSES OF THE OLKHON ICELAND AND OLKHON AREA (WEST BAIKAL REGION)

Citation
Zi. Petrova et Va. Makrygina, GEOCHEMISTRY OF GRANATE-BIOTITE AND BIOTI TE-PLAGIOCLASE GNEISSES OF THE OLKHON ICELAND AND OLKHON AREA (WEST BAIKAL REGION), Geohimia, (5), 1994, pp. 659-670
Citations number
9
Categorie Soggetti
Geosciences, Interdisciplinary
Journal title
ISSN journal
00167525
Issue
5
Year of publication
1994
Pages
659 - 670
Database
ISI
SICI code
0016-7525(1994):5<659:GOGABT>2.0.ZU;2-Q
Abstract
The granate-biotite and biotite-plagioclase gneisses of the Ol'khon ar ea are reported as metaterrigenous graywacke type rocks in concern wit h their geochemical peculiarities and geological position. The reveale d geochemical evolutionary trends of the Ol'khon and Angin series of t he Baikal metamorphic complex is in correlation with the change of che mical composition of basic volcanic rocks up to the tholeiitic and alk aline-basaltic types. This tendency is reflecting the change of geodyn amical conditions of sedimentation at the time of protolite formation.