The chemical composition and tectonic conditions of deposition of Paleozoic terrigenous sediments of the Ol’doi Terrain (eastern portion of the Central Asian Fold Belt)

Сорокин, А. А.; Smirnova, Yu. N.; Попеко, Л. И.; Smirnov, Yu. V.

doi:10.1134/s1028334x1011005x

Cited by 4 publications

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“…This implies that, since at least the Mid dle Devonian, the accumulation of terrigenous sedi ments in the Oldoi terrane had been accompanied by intense magmatic activity; i.e., it occurred in an envi ronment of a mature island arc or an active continental margin rather than a passive continental margin, as was suggested by previous authors (Didenko et al, 1994;Khanchuk, 2006). This conclusion is corroborated by the geochemical systematics of terrigenous sediments from the Oldoi terrane (Sorokin et al, 2010b;.…”

Section: Discussionsupporting

confidence: 57%

“…Variations in Nd isotopic composition and distribu tion of detrital zircons of different age in the Paleozoic sandstones of the Oldoi terrane of the Argun superter rane in the eastern part of the Central Asian orogenic belt together with the results of previous geochemical studies (Sorokin et al, 2010b; have led to the following conclusions.…”

Section: Discussionmentioning

confidence: 72%

“…It is composed of dislocated Paleozoic terrigenous and terrigenous-carbonate sequences and is usually considered as a fragment of a passive continental margin (e.g., Parfenov et al, 2003;Khanchuk, 2006). However, our recent geochemical data (Sorokin et al, 2010b(Sorokin et al, , 2012 are at odds with this interpretation and indicate that the sediment were accumulated in a passive continental margin during the early stages of formation of the Oldoi terrane and in an island arc or active continental margin setting during the late stages. In this paper, we report the results of Sm-Nd isotope geochemical and U-Pb geo chronological (LA-ICP-MS) investigations of the ter rigenous sequences of the Oldoi terrane, which allowed us to identify the source rocks and, to a first approxima tion, regions from which the sediments were derived and, thus, refine the existing models of the geodynamic settings of their formation.…”

Section: Introductionmentioning

confidence: 81%

“…Geochemical data (Sorokin et al, 2010b; indi cate that sedimentation occurred in a passive continen tal margin environment.…”

Section: Discussionmentioning

confidence: 99%

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Provenances of the paleozoic terrigenous sequences of the Oldoi terrane of the Central Asian orogenic belt: Sm-Nd isotope geochemistry and U-Pb geochronology (LA-ICP-MS)

et al. 2015

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The results of Sm-Nd isotope geochemical investigations of the Paleozoic terrigenous sequences of the Oldoi terrane and U-Pb dating of detrital zircons by the LA-ICP-MS technique showed that the clas tic material was mainly derived from Late Precambrian granitoids and Early to Middle Paleozoic granitoids and volcanics, which were formed owing to the reworking of the Late Precambrian continental crust. During the Silurian, the main source of terrigenous material in the sedimentation basin was the erosion of Late Pre cambrian and Early Paleozoic granitoids. In the Devonian, provenances became more diverse, and the sedi mentation basin was additionally supplied by the decomposition products of Middle Paleozoic granitoids and silicic volcanics. The age ranges obtained for detrital zircons from the sandstones of the Middle-Late Devo nian Oldoi Formation and the Early Carboniferous Tipara Formation are almost identical to the stratigraphic ages of the formations, which indicates that terrigenous sedimentation in the Oldoi terrane had been accom panied, at least since the Middle Devonian, by vigorous magmatic activity and occurred in an environment of a mature island arc or an active continental margin.

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Section: Discussionsupporting

confidence: 57%

Section: Discussionmentioning

confidence: 72%

Section: Introductionmentioning

confidence: 81%

“…Geochemical data (Sorokin et al, 2010b; indi cate that sedimentation occurred in a passive continen tal margin environment.…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Provenances of the paleozoic terrigenous sequences of the Oldoi terrane of the Central Asian orogenic belt: Sm-Nd isotope geochemistry and U-Pb geochronology (LA-ICP-MS)

et al. 2015

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Correlation between the ore formation processes in the Berezitovoe gold–complex-metal deposit (western part of the Selenga–Stanovoy superterrane) and the regional tectonomagmatic events

Сорокин

Пономарчук

Травин

et al. 2014

Russian Geology and Geophysics

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The age of the major igneous complexes in the western part of the Selenga–Stanovoy superterrane has been estimated by 40Ar/39Ar dating: trachyandesite-basalts of the Kuitun (Chichatka) complex—259.4 ± 6.2 Ma; gabbro of the Tukuringra complex—156.3 ± 4.8 Ma; granites and pegmatites of the Tukuringra complex—153.1 ± 3.8, 154.0 ± 4.4, 156.8 ± 4.0, and 151.2 ± 3.2 Ma; granodiorites, granites, and leucogranites of the Amudzhikan complex—131.7 ± 2.4, 134.5 ± 2.8, and 131.6 ± 4.2 Ma; and lamprophyre dikes—125.2 ± 2.4 and 125.2 ± 3.4 Ma. Two stages of hydrothermal ore formation process have been recognized: 132–131 and ~ 125 Ma. It is shown that the deposit formation and superposed processes follow the general regularities of the Late Mesozoic evolution of the Pacific Asia margin.

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Geochemistry of paleozoic terrigenous sediments from the Oldoi terrane, eastern Central Asian orogenic belt, as an indicator of geodynamic conditions during deposition

et al. 2013

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The chemical composition and tectonic conditions of deposition of Paleozoic terrigenous sediments of the Ol’doi Terrain (eastern portion of the Central Asian Fold Belt)

Cited by 4 publications

References 3 publications

Provenances of the paleozoic terrigenous sequences of the Oldoi terrane of the Central Asian orogenic belt: Sm-Nd isotope geochemistry and U-Pb geochronology (LA-ICP-MS)

Provenances of the paleozoic terrigenous sequences of the Oldoi terrane of the Central Asian orogenic belt: Sm-Nd isotope geochemistry and U-Pb geochronology (LA-ICP-MS)

Correlation between the ore formation processes in the Berezitovoe gold–complex-metal deposit (western part of the Selenga–Stanovoy superterrane) and the regional tectonomagmatic events

Geochemistry of paleozoic terrigenous sediments from the Oldoi terrane, eastern Central Asian orogenic belt, as an indicator of geodynamic conditions during deposition

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