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Ob-Zaisan Ocean

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Journal Article
Journal: GSA Bulletin
Published: 01 May 2017
GSA Bulletin (2017) 129 (5-6): 547–569.
..., thus allowing us to map the exact location of the tectonic boundary. Detrital zircon data constrain the initial closure of the Ob-Zaisan Ocean to the late Carboniferous (<323 Ma), and new structural and 40 Ar/ 39 Ar geochronological data shed light on the subsequent collisional processes. We propose...
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Journal Article
Published: 01 December 2011
Russ. Geol. Geophys. (2011) 52 (12): 1505–1515.
...-slip faulting. Plume magmatism was an active agent in ocean opening when the Paleotethys, Ural, ObZaisan, and Turkestan basins appeared while the Late Cambrian–Ordovician orogen was forming in Central Asia (North Kazakhstan, Altai–Sayan, Tuva, and Baikal areas). Closure of the ObZaisan ocean...
FIGURES
Journal Article
Published: 01 January 2011
Russ. Geol. Geophys. (2011) 52 (1): 52–71.
... and formation of the composite-continent basement. In Late Cambrian and Early Ordovician, this continent was separated from Siberia by the Ob’–Zaisan ocean basin. (2) The Vendian and Paleozoic Siberian continental margin complexes comprising the Vendian–Cambrian Kuznetsk–Altai island arc and the rock complexes...
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Journal Article
Published: 01 March 2019
The Journal of Geology (2019) 127 (2): 241–262.
... relicts of the Ob-Zaisan Ocean between the peri-Siberian and Kazakhstan-Junggar orogenic systems. In contrast, ankaramites from the Dulate arc of East Junggar or chemical equivalents possibly served as the protoliths of type III amphibolites. 2. The Irtysh Complex represents an accretionary prism...
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Journal Article
Published: 01 October 2013
Russ. Geol. Geophys. (2013) 54 (10): 1250–1271.
..., they were separated by the Ob’–Zaisan oceanic basin, whose fragments are preserved in the Caledonian suture-shear zone. The movements during the Late Paleozoic occurred along older, reactivated structures and produced the large intracontinental Central Asian orogen, which is interpreted to be a far-field...
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Journal Article
Published: 01 December 2011
Russ. Geol. Geophys. (2011) 52 (12): 1600–1618.
... in the Silurian. The Sakmarian, Tagil, Eastern Urals, and Stepnyak volcanic arcs formed at the boundaries with the Ural, Turkestan, and Junggar–Balkhash Oceans. In the late Silurian, Kazakhstania collided with the island arcs of the Turkestan and Ob’–Zaisan Oceans, with the formation of molasse and granite belts...
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Image
a , Paleogeographic reconstruction diagram (modified after Filippova et al....
Published: 01 March 2019
Orogen, as part of the peri-Siberia orogenic system, was under subduction of the intervening Ob-Zaisan Ocean (i.e., a branch of the PAO) between this orogenic system and the Kazakhstan-Junggar orogenic collage. BL = Barlyk arc; ChTS = Chinese Tien Shan; CTS = Central Tien Shan; KHM = Khanty-Mansi; MG
Image
Tentative tectonic reconstruction of the western Central Asian orogenic bel...
Published: 01 May 2017
the closure of the Ob-Zaisan Ocean (modified after P. Li et al., 2015a ). DVB—Devonian volcanic belt; CKF—Central Kazakhstan fault; ISZ—Irtysh shear zone; CANTF—Chingiz–Alakol–North Tian Shan fault; MTSZ—Main Tianshan shear zone.
Journal Article
Published: 01 December 2011
Russ. Geol. Geophys. (2011) 52 (12): 1539–1552.
... into the Kazakhstan–Tuva–Mongolia system. The formation of the Late Cambrian–Ordovician orogen in Central Asia was synchronous with opening of the Ural, ObZaisan, Turkestan, and Paleotethys oceans. The plume pulses (520–500 and 490–460 Ma) may have been responsible for opening of new oceans, accelerated amalgamation...
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Journal Article
Published: 01 August 2001
Russ. Geol. Geophys. (2001) 42 (8): 1089–1109.
... of active continental margin of the Andean type; C 1 v-C 3 – accretion-collisional, related to the oblique collision of the Dzhungar microplate with the Siberian continent and closure of the Ob’-Zaisan paleoocean basin; P 1 -T 2 – postcollisional, realized in the strike-slip motion regime; and T 3 -J 1...
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Journal Article
Published: 01 March 2022
Russ. Geol. Geophys. (2022) 63 (3): 279–299.
...” was introduced for such orogens ( Khain et al., 1996 ; Vladimirov et al., 2003 ). The general sequence of geodynamic events in the study area of the Ob’–Zaisan folded system is as follows: subduction → convergence of continental blocks and reduction in the ocean basin → termination of marine sedimentation...
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Image
Schematic illustration of the tectonic evolution of the Kazakhstan-Tien Sha...
Published: 01 August 2014
in the back-arc riftogenic setting in the Ob’-Zaisan back-arc basin. (b) Middle Paleozoic: back-arc rifting was followed by opening of the Ob’-Zaissan back-arc oceanic basin. (c) Devonian: the onset of subduction in this oceanic basin under the Altai-Mongol superterrane initiated arc magmatism in the Rudny
Journal Article
Published: 01 May 2002
Russ. Geol. Geophys. (2002) 43 (5): 434–445.
... stages [ 21 ]. The geological history of the adjacent Chinese territory was suggested to include a Yanshan (Mesozoic) and a Himalayan (Cenozoic) stages of tectonic activity. In the Early Carboniferous, the Ob’-Zaisan Hercynian ocean went through the final stage of its evolution. It closed...
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Image
The Vendian-Cambrian island arc fragments in the framework of the Siberian ...
Published: 01 December 2004
Fig. 3. The Vendian-Cambrian island arc fragments in the framework of the Siberian continent [ 18 ]. 1 — Cenozoic depression; 2 — Hercynides of the Ob’-Zaisan and Tom’-Kolyvan’ folded area; 3 — microcontinents: Tuva-Mongolian (TM), Barguzin (B), Altai-Mongolian (AM), 4 — Siberian
Journal Article
Published: 01 December 2013
Russ. Geol. Geophys. (2013) 54 (12): 1471–1483.
... of the Altai Hercynides is now interpreted in terms of the gradual convergence of the Kazakhstan and Siberian Plates during their clockwise rotation relative to each other and the simultaneous reduction of the Ob’–Zaisan paleo-ocean basin (D 1–2 –C 1 ). At that time, the Ob’–Zaisan basin interacted...
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Journal Article
Published: 01 January 2003
Russ. Geol. Geophys. (2003) 44 (1-2): 28–39.
.... In the Carboniferous the structures of the Ural-Mongolian belt agglomerated. At that time, the Kazakhstanian continent was pushed into the oceanic space between Baltica and Siberia, and their joint collision began, which led to the formation of the Valerianovka and Ob’-Zaisan suture zones in the late Early...
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Journal Article
Published: 01 January 2003
Russ. Geol. Geophys. (2003) 44 (1-2): 5–27.
...-Tethys. An immediate contact of the paleo-Tethys and Paleoasian structures is observed in the southern Tien Shan (see below). Relationships between the paleo-Tethys and late stages of the Paleoasian ocean (Uralian and Ob’-Junggar paleo-oceans, which appeared in the Ordovician) are a special problem...
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Journal Article
Published: 01 July 2008
Russ. Geol. Geophys. (2008) 49 (7): 468–479.
... of classical tectonics, the area coincides with the Zaisan folded area produced by closure of the Char paleo-ocean in the Late Carboniferous. However, the extent, structure, and composition of magmatism at the Carboniferous-Permian (280±10 Ma) and Permian-Triassic (250±5 Ma) boundaries require an active...
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Journal Article
Published: 01 October 2013
Russ. Geol. Geophys. (2013) 54 (10): 1135–1149.
..., Mongolia, Kazakhstan, and Tien Shan, and its crust consists of both juvenile and recycled material ( Kovach et al., 2013 ). In the Early–Middle Paleozoic, the continent was separated from Siberia by the Ob‘–Zaisan ocean. The Vendian–Early Paleozoic Charysh–Terekta–Ulagan–Sayan–Olkhon strike-slip suture...
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Journal Article
Published: 01 November 2011
Russ. Geol. Geophys. (2002) 43 (11): 990–1001.
...-bearing picrite-dolerite formation are widespread in the Hercynian structures of the Zaisan-Gobi fold belt, extending from the Ob’ basin (Novosibirsk region) through East Kazakhstan and North Xinjiang to the Gobi segment of the Hercynides of South Mongolia [ 1 ]. In the Zaisan and Gobi segments...
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