Results 181 to 190 of about 3,591 (216)

Recommendations for Geophysical Studies of the Siberian Craton Basement

Proceedings, 2014
Hydrocarbon accumulations in the basement rocks found in the North American (U.S., Mexico), South American (Colombia, Brazil, Venezuela), the African-Arabian (Libya, Morocco, Egypt), East European (Yugoslavia, Hungary, Ukraine, Austria ), South China (China), Indochina (Vietnam) platforms, the West Siberian (Russia) and the Western European plate ...
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Signature of Precambrian extension events in the southern Siberian craton

Russian Geology and Geophysics, 2007
Abstract We investigate extension events in the southern Siberian craton between 1.8 and 0.7 Ga. Signature of Late Paleoproterozoic within-plate extension in the Northern Baikal region is found in 1674 ± 29 Ma dike swarms. A Mesoproterozoic extension event was associated with intrusion of the 1535 ±14 Ma Chernaya Zima granitoids into the
D.P. Gladkochub, T.V. Donskaya, A.M. Mazukabzov, A.M. Stanevich, E.V. Sklyarov, V.A. Ponomarchuk   +5 more
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Silicification of Riphean Carbonate Sediments (Yurubcha-Tokhomo Zone, Siberian Craton)

Lithology and Mineral Resources, 2005
Types and lateral and vertical distribution of silicification in Riphean (largely dolomitic) rocks of the Yurubcha-Tokhomo zone of the Siberian Craton are discussed. It is shown that quartz and pyroclastic material in sediments were subjected to intense dissolution in a highly alkaline Riphean basin with the release of silica. Rapid and abrupt decrease
V. G. Kuznetsov, N. M. Skobeleva
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Cambrian Photosynthetic and Chemosynthetic Ecosystems in the Siberian Craton

Paleontological Journal, 2018
The leading role of bacterial communities in the formation of marine sedimentary rocks is inferred from the synthesis of expert knowledge about bacterial paleontology, while the results of oceanic studies (materials and data) offer new insights into symbiotic relationships between phototrophic and chemotrophic bacteria and fauna.
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The Siberian Connection: A case for Precambrian separation of the North American and Siberian cratons

Geology, 1978
The hypothesis that the Cordilleran geosyncline originated as an Atlantic-type continental margin by the rifting of an older Precambrian continental mass and the opening of a new ocean basin leads to the question of where the counterpart of the North American Precambrian craton may be.
J. W. Sears, R. A. Price
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Formation of Siberian cratonic mantle websterites from high-Mg magmas

Lithos, 2019
Abstract Garnet–(olivine) websterite xenoliths from the lithospheric mantle of the central and northeastern parts of the Siberian Craton contain exsolution microstructures after Si- and Ti-rich precursor garnets. We petrographically, geochemically, and thermobarometrically investigated 13 such xenoliths from the Mir, Obnazhennaya, and Udachnaya ...
Dirk Spengler, Taisia A. Alifirova
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Late Ordovician cooling event: Evidence from the Siberian Craton

Palaeogeography, Palaeoclimatology, Palaeoecology, 2013
Abstract The Upper Ordovician of the Tungus Basin on the Siberian Platform is represented by cool-water carbonates. Onset of cool-water conditions starts at the Darriwilian, and it is associated with widespread phosphatization, especially in the Volginian, Kirensko-Kudrinian and Chertovskian regional stages (mid-Darriwilian–lower Sandbian). The shift
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The Early Cambrian bimodal magmatism in the northeastern Siberian Craton

Russian Geology and Geophysics, 2016
Abstract We present new data on geochemistry, isotopic geochemistry, and geochronology of the Early Cambrian igneous rocks of the northeastern Siberian Craton (Kharaulakh anticlinorium, contact between the Siberian Platform and the West Verkhoyansk sector of the Verkhoyansk fold-and-thrust belt united into an Early Cambrian bimodal ...
A.V. Prokopiev, A.K. Khudoley, O.V. Koroleva, G.G. Kazakova, D.K. Lokhov, S.V. Malyshev, A.I. Zaitsev, S.P. Roev, S.A. Sergeev, N.G. Berezhnaya, D.A. Vasiliev   +10 more
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Early Cambrian magmatism in the northeastern Siberian Craton (Olenek Uplift)

Doklady Earth Sciences, 2015
The Vendian–Lower Cambrian tectonomagmatic activation took place in the northeastern Siberian Craton, within the Olenek Uplift and in the Kharaulakh segment of the Verkhoyansk fold-and-thrust belt (the lower reaches of the Lena River). The Early Paleozoic volcanic activity in the Olenek Uplift is expressed in the form of basitic diatremes, small ...
A. I. Kiselev, B. B. Kochnev, V. V. Yarmolyuk, K. N. Egorov   +3 more
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Heat flow and destabilized cratons: a comparative study of the North China, Siberian, and Wyoming cratons

International Geology Review, 2016
ABSTRACTHeat has a close relation to cratonic stability. We reconstructed the thermal history of the eastern North China, Wyoming, and Siberian cratons by using xenolith and thermal indicator data, and then the thermal lithospheric thickness in geological time was calculated by combining the crustal structural and thermal parameters.
Wei Xu, Nansheng Qiu
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