TY - JOUR

T1 - Paleozoic collisional belt of the South Tien Shan: A review

AU - Biske, Yury S.

AU - Konopelko, Dmitry L.

AU - Seltmann, Reimar

N1 - The authors appreciate the constructive comments of the editors and two anonymous reviewers. We are grateful to many colleagues, especially to D.V. Alexeyev, B. Wang, and L. Zhong, for their help and cooperation during our field work in various regions of Tien-Shan. I.V. Sumareva and T.V. Buzkova kindly assisted with preparation of the figures. Dmitry Konopelko was supported by the Russian Science Foundation, Project # 21-77-20022. This review summarizes results of research carried out during 2011-2021 under the auspices of the International Geoscience Program projects IGCP-592 and IGCP-662 funded under the patronage of IUGS and UNESCO. Reimar Seltmann acknowledges that this publication has been produced within the framework of the Grant “Resourcing low-carbon technologies for green economy of Uzbekistan” (REP-24112021/70), funded under the MUNIS Project, supported by the World Bank and the Government of the Republic of Uzbekistan. The statements do not necessarily reflect the official position of the World Bank and the Government of the Republic of Uzbekistan.

PY - 2024/1

Y1 - 2024/1

N2 - The South Tien Shan was formed by the late Paleozoic (Hercynian) collision between the Precambrian continents of Karakum and Tarim in the south and the early Paleozoic Kazakhstan continent in the north. The most eye-catching geological features of the South Tien Shan include various Silurian to Carboniferous marine sedimentary formations, which are tectonically juxtaposed with fragments of ophiolites; suprasubduction and intraplate volcanics and crosscut by Carboniferous to Permian orogenic granitoids. Major tectonic cycles can be traced through the entire South Tien Shan belt over 2000 km from west to east. The Late Proterozoic accretionary events at the active margins of Rodinia were followed by continental rifting in the early Paleozoic. The opening of new oceanic basins known as the Turkestan Ocean took place from the late Ordovician to early or middle Devonian and was accompanied by active subduction in island arcs and active continental margins. Input of materials from eroded island arcs into sedimentary basins is registered in lower-middle Paleozoic and younger sediments. Devonian intraplate magmatism made another significant contribution to the formation of continental crust of South Tien Shan. Precambrian microcontinents that existed within the Turkestan Ocean during the early Paleozoic as separate blocks were later accreted to continental margins together with island-arcs and made up a basement, on which the Middle Paleozoic carbonate platforms were formed. The last episode of suprasubduction magmatism, which started in the Lower Carboniferous (Visean) and reached its peak in Serpukhovian - Bashkirian, was followed by collision and final closure of the Turkestan Ocean in early Permian.

AB - The South Tien Shan was formed by the late Paleozoic (Hercynian) collision between the Precambrian continents of Karakum and Tarim in the south and the early Paleozoic Kazakhstan continent in the north. The most eye-catching geological features of the South Tien Shan include various Silurian to Carboniferous marine sedimentary formations, which are tectonically juxtaposed with fragments of ophiolites; suprasubduction and intraplate volcanics and crosscut by Carboniferous to Permian orogenic granitoids. Major tectonic cycles can be traced through the entire South Tien Shan belt over 2000 km from west to east. The Late Proterozoic accretionary events at the active margins of Rodinia were followed by continental rifting in the early Paleozoic. The opening of new oceanic basins known as the Turkestan Ocean took place from the late Ordovician to early or middle Devonian and was accompanied by active subduction in island arcs and active continental margins. Input of materials from eroded island arcs into sedimentary basins is registered in lower-middle Paleozoic and younger sediments. Devonian intraplate magmatism made another significant contribution to the formation of continental crust of South Tien Shan. Precambrian microcontinents that existed within the Turkestan Ocean during the early Paleozoic as separate blocks were later accreted to continental margins together with island-arcs and made up a basement, on which the Middle Paleozoic carbonate platforms were formed. The last episode of suprasubduction magmatism, which started in the Lower Carboniferous (Visean) and reached its peak in Serpukhovian - Bashkirian, was followed by collision and final closure of the Turkestan Ocean in early Permian.

KW - Carbonate platforms

KW - Continental margins

KW - Ophiolites

KW - Paleozoic

KW - Precambrian continents

KW - Southern Tien Shan

KW - Tectonic reconstructions

KW - Thrust belt

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85179102044&origin=inward&txGid=4dd238be2700189e7492f90174a857c8

UR - https://www.mendeley.com/catalogue/213b48be-b796-323a-b190-87133b1936ef/

U2 - 10.1016/j.earscirev.2023.104637

DO - 10.1016/j.earscirev.2023.104637

M3 - Article

VL - 248

JO - Earth-Science Reviews

JF - Earth-Science Reviews

SN - 0012-8252

M1 - 104637

ER -