The Kotuikan ring structure as possible evidence for a large impact event in the northern Siberian craton

被引：3
作者：
Glukhovskii, M. Z. [1 ]
Kuz'min, M. I. [2 ]
机构：
[1] Russian Acad Sci, Inst Geol, Pyzhevskii Per 7, Moscow 119017, Russia
[2] Russian Acad Sci, Siberian Branch, AP Vinogradov Inst Geochem, Irkutsk 664033, Russia
来源：
RUSSIAN GEOLOGY AND GEOPHYSICS | 2013年 / 54卷 / 01期
关键词：
impact structures; astroblemes; ring structures; Siberian craton; ARCHEAN SPHERULE BEDS; SOUTH-AFRICA; KAAPVAAL CRATON; VREDEFORT DOME; PSEUDOTACHYLITES; GEOCHEMISTRY; CONSTRAINTS; CHICXULUB; ISOTOPES; SUDBURY;
D O I：
10.1016/j.rgg.2012.12.001
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
Remote-sensing, cosmogeological, tectonic, geophysical, structural, compositional, isotopic, and geochronological criteria permit identifying the Kotuikan ring structure in the northern Siberian Platform as a Paleoproterozoic large astrobleme, close in age to the Vredefort and Sudbury impact structures. Also, indirect evidence for two more large impact structures was obtained here. This confirms widely hypothesized massive bombardment of the early Earth by asteroids and a possible effect of large impact events on the Earth's mantle dynamics and rotation regime, that is, the tectonic evolution of our planet, including plate tectonics. (c) 2013, V. S. Sobolev IGM, Siberian Branch of the RAS. Published by Elsevier B.V. All rights reserved.
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页码：1 / 19
页数：19
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