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- Title
Petrogeochemical Characteristics of Late Devonian Metagabbro-Dolerites of the Kara Astrobleme, Nenets Autonomous District, Russia.
- Authors
Shaibekov, R. I.; Ulyasheva, N. S.; Tropnikov, E. M.; Ignatiev, G. V.
- Abstract
The paper presents the results of detailed petrographic and petrogeochemical studies of metagabbro-dolerites from the central part of the Kara astrobleme. The data obtained made it possible to narrow the petrographic diversity of the rocks to two varieties: quartz-free metagabbro-dolerites and quartz-bearing metagabbro-dolerites, which were formed through differentiation of a single magmatic melt. The geochemical features of the rocks indicate the heterogeneity of the magma-generating source. The rock-forming minerals of the quartz-free and quartz-bearing metagabbro-dolerites are characterized by the presence of planar elements of the low and middle stages of impact metamorphism.
- Subjects
RUSSIA; ROCK-forming minerals; DEVONIAN Period; HETEROGENEITY
- Publication
Petrology, 2023, Vol 31, Issue 4, p424
- ISSN
0869-5911
- Publication type
Article
- DOI
10.1134/S0869591123040070