Tectonics and Geodynamics of the Altai-Junggar Orogen in the Vendian-Paleozoic: Implications for the Continental Evolution and Growth of the Central Asian Fold Belt

On the Closing Date of the Jungar-Balkhash Paleobasin

“…Devonian, Carboniferous and Permian volcanic accumulations surrounded the sea pool with north, west and south, on measure of the removing behind it with local develop changed with terrigenous by red-colour postponing intracontinental zone [6,7]. The time of existence Dzhungar-Balhash basin from formation of marginal rifts at the beginning Ordovician to infilling by the end of Paleozoic [8][9][10].…”

“…Relatively recently appeared the publications on Tien-SHan [8,10,11,19] and others], characterizing South Eeast Kazakhstan and North Tien-SHan as active margin not Dzhungar-Balhash ocean, but located to south of it Turkestan (South-Tien-Shan ocean, which developed on background subduction ocean crust with south under Ili plate [11]. To such conclusion authors of enumerated publications come, outgoing from proximity Ili segment of the volcanic belt with South-Tien-SHan ocean basin, but without regard petrochemical zones composition of the volcanic rocks of Ili belt.…”

Mineralogy, Geochemistry, and Geochronology of the Yehe-Shigna Ophiolitic Massif, Tuva-Mongolian Microcontinent, Southern Siberia: Evidence for a Back-Arc Origin and Geodynamic Implications

“…The first point of view reconstructs the Neoproterozoic Tuva-Mongolian microcontinent as a sliver of the continental crust of the Siberian craton [14][15][16][17]. The second postulates that all terranes are fragments of East Gondwana and drifted away from it from the late Neoproterozoic [18][19][20][21][22][23]. According to [21][22][23], the Late Neoproterozoic-Cambrian southwest margin of the Siberian continent has a basement that was formed during the subduction of the Paleoasian oceanic plate, comprising the collage of Precambrian Gondwana-derived microcontinents (Tuva-Mongolian, Dzabhan, Muya, and others), beneath the Late Neoproterozoic-Cambrian Tuva-Mongolian island arc.…”

“…The second postulates that all terranes are fragments of East Gondwana and drifted away from it from the late Neoproterozoic [18][19][20][21][22][23]. According to [21][22][23], the Late Neoproterozoic-Cambrian southwest margin of the Siberian continent has a basement that was formed during the subduction of the Paleoasian oceanic plate, comprising the collage of Precambrian Gondwana-derived microcontinents (Tuva-Mongolian, Dzabhan, Muya, and others), beneath the Late Neoproterozoic-Cambrian Tuva-Mongolian island arc. The geodynamic nature of the Tuva-Mongolian continental block is a challenging problem: many similar Precambrian fragments are dispersed throughout the Central Asian orogenic belt, and at least two diametrically opposite hypotheses are discussed for their origin.…”

Geochronology of the Metamorphic Rocks in the Kurai Accretionary Prism (South-Eastern Gorny Altai)

“…В работах [Şengör et al, 1993;Zonenshain et al, 1990;Berzin et al, 1994;Simonov et al, 1994;Didenko et al, 1994;Berzin, Kungurtsev, 1996] АССО рассмотрена как единая ак-креционно-коллизионная зона, сформированная на окраине Сибирского континента. По мнению, вы-сказанному в работах [Buslov, 2011[Buslov, , 2014Buslov et al, 2013;Buslov, Cai, 2017], в структуре АССО и в це-лом в Центрально-Азиатском складчатом поясе совмещены окраинно-континентальные комплек-сы пород, сформированные при эволюции двух крупнейших океанических плит. Одна из них, плита Палеоазиатского океана, аналог современного Ин-до-Австралийского сегмента Земли, характеризу-ется наличием континентальных блоков, окружен-ных океанической корой, сформированной в ре-зультате деструкции суперконтинентов Родиния и Гондвана.…”