MAFIC INCLUSIONS (SOBSKY COMPLEX, POLAR URAL): U‐Pb (SIMS) DATA
https://doi.org/10.5800/GT-2019-10-2-0414
Abstract
The rocks of the Sobsky complex, composing the bulk of the Sobsky batholith in the Polar Urals, contain mafic inclusions. The geological, petrographic and petro‐geochemical data show that the mafic inclusions of the Sobsky rocks belong to igneous formations, which are similar in their characteristics to autoliths. According to all the characteristics, these are the structures non‐contrasting to host rocks and having different structural‐textural features, a more basic composition of minerals and a more basic composition of rocks. The contact with the rocks of the complex is sharp and clear. The rocks of the complex in contact with autoliths are medium‐grained massive diorite rocks, quartz diorites, tonalites, mafic inclusions rocks – fine‐grained gabbros, gabbro‐diorites, and diorites. Isotopicgeochemical (U‐Pb, SIMS) data on zircons from the mafic inclusions suggest that their age is close, within the error limits, to the age of zircons from the enclosing Sobsky complex rocks.
About the Authors
О. V. Udoratina
N.P. Yushkin Institute of Geology of Komi Science Center, Ural Branch of RAS;
Tomsk State University
Russian Federation
Russian Federation
Oksana V. Udoratina - Candidate of Geology and Mineralogy
54 Pervomayskaya street, Syktyvkar 167982,
50 Lenin ave., Tomsk 634050
М. A. Coble
Stanford University
United States
United States
Matthew A. Coble - PhD, Research and Development Scientist and Engineer
Department of Geological Sciences Stanford, California 94305
A. S. Shuyskiy
N.P. Yushkin Institute of Geology of Komi Science Center, Ural Branch of RAS
Russian Federation
Russian Federation
Aleksander S. Shuyskiy
54 Pervomayskaya street, Syktyvkar 167982
V. A. Kapitanova
N.P. Yushkin Institute of Geology of Komi Science Center, Ural Branch of RAS
Russian Federation
Russian Federation
Valentina A.Kapitanova
54 Pervomayskaya street, Syktyvkar 167982
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Review
For citations:
Udoratina О.V., Coble М.A., Shuyskiy A.S., Kapitanova V.A. MAFIC INCLUSIONS (SOBSKY COMPLEX, POLAR URAL): U‐Pb (SIMS) DATA. Geodynamics & Tectonophysics. 2019;10(2):265-288. (In Russ.) https://doi.org/10.5800/GT-2019-10-2-0414
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