MAIN STAGES OF CONTINENTAL CRUST FORMATION IN THE WESTERN ALDAN SHIELD: CONSTRAINTS FROM SM-ND ISOTOPE SYSTEMATICS OF CENOZOIC SANDS IN THE CHARA AND TOKKA BASINS
https://doi.org/10.5800/GT-2017-8-3-0271
Abstract
Previous geochronological and Sm-Nd isotopegeochemical studies have identified the main stages of the Precambrian continental crust formation in the central and eastern parts of the Aldan Shield [Kotov et al., 2006], while its western part (Chara-Olekma Geoblock) has not been adequately investigated yet in this respect.
About the Authors
A. B. Коtоv
Institute of Precambrian Geology and Geochronology of RAS
Russian Federation
St. Petersburg
Russian Federation
St. Petersburg
T. M. Skovitina
Institute of the Earth’s Crust, Siberian Branch of RAS
Russian Federation
Irkutsk
Russian Federation
Irkutsk
V. P. Kovach
Institute of Precambrian Geology and Geochronology of RAS
Russian Federation
St. Petersburg
Russian Federation
St. Petersburg
S. D. Velikoslavinsky
Institute of Precambrian Geology and Geochronology of RAS
Russian Federation
St. Petersburg
Russian Federation
St. Petersburg
D. V. Lopatin
Institute of Earth Sciences, St. Petersburg State University
Russian Federation
St. Petersburg
Russian Federation
St. Petersburg
E. V. Sklyarov
Institute of the Earth’s Crust, Siberian Branch of RAS
Russian Federation
Irkutsk
Russian Federation
Irkutsk
E. V. Tolmacheva
Institute of Precambrian Geology and Geochronology of RAS
Russian Federation
St. Petersburg
Russian Federation
St. Petersburg
O. V. Bobrovskaya
Institute of Earth Sciences, St. Petersburg State University
Russian Federation
St. Petersburg
Russian Federation
St. Petersburg
References
1. Kotov A.B., Anisimova I.V., Glebovitsky V.A., Kovach V.P., Sal'nikova E.B., Smelov A.P., Berezkin V.I., Zagornaya N.Yu., 2004. Age limit of the greenstone belts of the Western Aldan shield. Doklady Earth Sciences 399 (8), 1060–1064.
2. Kotov A.B., Sal'nikova E.B., Glebovitsky V.A., Kovach V.P., Larin A.M., Velikoslavinsky S.D. 2006. Sm-Nd isotopic provinces of the Aldan shield. Doklady Earth Sciences 410 (7), 1066–1069. https://doi.org/10.1134/S1028334X06070142.
3. Larin A.M., Kotov A.B., Sal’nikova E.B., Kovach V.P., Makar’ev L.B., Timashkov A.N., Berezhnaya N.G., Yakovleva S.Z., 2000. New data on the age of granites of the Kodar and Tukuringra complexes, Eastern Siberia: geodynamic constraints. Petrology 8 (3), 238–248.
4. Larin A.M., Kotov A.B., Velikoslavinskii S.D., Sal'nikova E.B., Kovach V.P., 2012. Early Precambrian A-granitoids in the Aldan shield and adjacent mobile belts: sources and geodynamics environments. Petrology 20 (3), 218–239. https://doi.org/10.1134/S0869591112030034.
5. Larin A.M., Nemchin A.A., Krymskii R.Sh., Kovach V.P., 1999. Sm-Nd isotope limitations on the genesis of granite rapakivi of the Kodar complex, the western Aldan-Stanovoy shield. Doklady Earth Sciences 369 (2), 1195–1197.
6. Lopatin D.V., 1972. Geomorphology of the East Part of the Baikal Rift Zone. Nauka, Novosibirsk, 115 p. (in Russian).
7. Podkovyrov V.N., Kotov A.B., Larin A.M., Kotova L.N., Kovach V.P., Zagornaya N.Yu., 2006. Sources and provenances of lower proterozoic terrigenous rocks of the Udokan group, Southern Kodar-Udokan depression: Results of Sm-Nd isotopic investigations. Doklady Earth Sciences 408 (4), 518–522. https://doi.org/10.1134/S1028334X06040027.
8. Sal’nikova E.B., Kovach V.P., Kotov A.B., Nemchin A.A., 1996. Evolution of continental crust in the Western Aldan shield: Evidence from Sm–Nd systematics of granitoids. Petrology 4 (2), 105–118.
Review
For citations:
Коtоv A.B., Skovitina T.M., Kovach V.P., Velikoslavinsky S.D., Lopatin D.V., Sklyarov E.V., Tolmacheva E.V., Bobrovskaya O.V. MAIN STAGES OF CONTINENTAL CRUST FORMATION IN THE WESTERN ALDAN SHIELD: CONSTRAINTS FROM SM-ND ISOTOPE SYSTEMATICS OF CENOZOIC SANDS IN THE CHARA AND TOKKA BASINS. Geodynamics & Tectonophysics. 2017;8(3):495-498. https://doi.org/10.5800/GT-2017-8-3-0271
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