gtcrustГеодинамика и тектонофизикаGeodynamics & Tectonophysics2078-502XInstitute of the Earth's crust of the Russian Academy of Sciences, Siberian Branch10.5800/GT-2017-8-3-0295gtcrust-436Research ArticleПАЛЕОГЕОДИНАМИКАPALEOGEODYNAMICSTWO ASYMMETRICAL PERMIAN GRANITIC BELTS IN THE SOUTHEAST CAOB AND THEIR IMPLICATIONSTWO ASYMMETRICAL PERMIAN GRANITIC BELTS IN THE SOUTHEAST CAOB AND THEIR IMPLICATIONSTongYingTongYing

Beijing

Beijing

WangTaoWangTao

Beijing

Beijing

GuoLeiGuoLei

Beijing

Beijing

ZhangLeiZhangLei

Beijing

Beijing

ZhangJianjunZhangJianjun

Beijing

Beijing

Institute of Geology, Chinese Academy of Geological SciencesКитайInstitute of Geology, Chinese Academy of Geological SciencesChina20171410201783575576Copyright © Tong Y., Wang T., Guo L., Zhang L., Zhang J., 20172017Tong Y., Wang T., Guo L., Zhang L., Zhang J.Tong Y., Wang T., Guo L., Zhang L., Zhang J.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.gt-crust.ru/jour/article/view/436

There has been much discussion about the evolution of the Southeastern CAOB in the past two decades [Tang, 1990; Hong et al., 1994; Xiao et al., 2003; Li, 2006; Chen et al., 2009; Jian et al., 2010]. Most people believed that the Palaeozoic Asia ocean was closed along the Solonker suture at Permian with two-direction subduction models [Xiao et al., 2003; Jian et al., 2010]. Three EW subparallel Permian granitic belts took place both side of the Solonker suture, including Erlian-Uliastai belt on north side of the Erlian-Hegengshan ophiolite, south Mongolia-Xilinhot belt the Erlian-Hegengshan ophiolite on the north and the Solonker suture on the south, and the Baotou-Chifeng belt along the north margin of North China Carton on the south of the Solonker suture. Most Permian granitoids in the ErlianUliastai belt and Mongolia-Xilinhot belt were intruded in Early-Middle Permian.

There has been much discussion about the evolution of the Southeastern CAOB in the past two decades [Tang, 1990; Hong et al., 1994; Xiao et al., 2003; Li, 2006; Chen et al., 2009; Jian et al., 2010]. Most people believed that the Palaeozoic Asia ocean was closed along the Solonker suture at Permian with two-direction subduction models [Xiao et al., 2003; Jian et al., 2010]. Three EW subparallel Permian granitic belts took place both side of the Solonker suture, including Erlian-Uliastai belt on north side of the Erlian-Hegengshan ophiolite, south Mongolia-Xilinhot belt the Erlian-Hegengshan ophiolite on the north and the Solonker suture on the south, and the Baotou-Chifeng belt along the north margin of North China Carton on the south of the Solonker suture. Most Permian granitoids in the ErlianUliastai belt and Mongolia-Xilinhot belt were intruded in Early-Middle Permian.

ReferencesChen B., Jahn B.M., Tian W., 2009. Evolution of the Solonker suture zone: Constraints from zircon U–Pb ages, Hf isotopic ratios and whole-rock Nd–Sr isotope compositions of subduction and collision-related magmas and forearc sediments. Journal of Asian Earth Sciences 34 (3), 245–257. https://doi.org/10.1016/j.jseaes.2008.05.007.Chen B., Jahn B.M., Tian W., 2009. Evolution of the Solonker suture zone: Constraints from zircon U–Pb ages, Hf isotopic ratios and whole-rock Nd–Sr isotope compositions of subduction and collision-related magmas and forearc sediments. Journal of Asian Earth Sciences 34 (3), 245–257. https://doi.org/10.1016/j.jseaes.2008.05.007.Hong D.W., Wang S.G., Han B.F., Jin M.Y., 1994. The Permian alkaline granites in Central Inner Mongolia and their geodynamic significance. Journal of Southeast Asian Earth Sciences 10 (3–4), 169–176. https://doi.org/10.1016/0743- 9547(94)90017-5.Hong D.W., Wang S.G., Han B.F., Jin M.Y., 1994. The Permian alkaline granites in Central Inner Mongolia and their geodynamic significance. Journal of Southeast Asian Earth Sciences 10 (3–4), 169–176. https://doi.org/10.1016/0743- 9547(94)90017-5.Jian P., Liu D., Kröner A., Windley B.F., Shi Y., Zhang W., Zhang F., Miao L., Zhang L., Tomurhuu D., 2010. Evolution of a Permian intra oceanic arc-trench system in the Solonker suture zone, Central Asian Orogenic Belt, China and Mongolia. Lithos 118 (1–2), 169–190. https://doi.org/10.1016/j.lithos.2010.04.014.Jian P., Liu D., Kröner A., Windley B.F., Shi Y., Zhang W., Zhang F., Miao L., Zhang L., Tomurhuu D., 2010. Evolution of a Permian intra oceanic arc-trench system in the Solonker suture zone, Central Asian Orogenic Belt, China and Mongolia. Lithos 118 (1–2), 169–190. https://doi.org/10.1016/j.lithos.2010.04.014.Li J.Y., 2006. Permian geodynamic setting of northeast China and adjacent regions: closure of the Paleo-Asian ocean and subduction of the Paleo-Pacific plate. Journal of Asian Earth Sciences 26 (3–4), 207–224. https://doi.org/ 10.1016/j.jseaes.2005.09.001.Li J.Y., 2006. Permian geodynamic setting of northeast China and adjacent regions: closure of the Paleo-Asian ocean and subduction of the Paleo-Pacific plate. Journal of Asian Earth Sciences 26 (3–4), 207–224. https://doi.org/ 10.1016/j.jseaes.2005.09.001.Tang K.D., 1990. Tectonic development of the Paleozoic fold belts on the northern margin of the Sino-Korean craton. Tectonics 9 (2), 249–260. https://doi.org/10.1029/TC009i002p00249.Tang K.D., 1990. Tectonic development of the Paleozoic fold belts on the northern margin of the Sino-Korean craton. Tectonics 9 (2), 249–260. https://doi.org/10.1029/TC009i002p00249.Tong Y., Jahn B.M., Wang T., Hong D.W., Smith E.I., Sun M., Gao J.F., Yang Q.D., Huang W., 2015. Permian alkaline granites in the Erenhot-Hegenshan belt, northern Inner Mongolia, China: Model of generation, time of emplacement and regional tectonic significance. Journal of Asian Earth Sciences 97 (Part B), 320–336. https://doi.org/10.1016/ j.jseaes.2014.10.011.Tong Y., Jahn B.M., Wang T., Hong D.W., Smith E.I., Sun M., Gao J.F., Yang Q.D., Huang W., 2015. Permian alkaline granites in the Erenhot-Hegenshan belt, northern Inner Mongolia, China: Model of generation, time of emplacement and regional tectonic significance. Journal of Asian Earth Sciences 97 (Part B), 320–336. https://doi.org/10.1016/ j.jseaes.2014.10.011.Xiao W.J., Windley B.F., Hao J., Zhai M.G., 2003. Accretion leading to collision and the Permian Solonker suture, Inner Mongolia, China: termination of the Central Asian Orogenic Belt. Tectonics 22 (6), 1069. https://doi.org/10.1029/ 2002TC001396.Xiao W.J., Windley B.F., Hao J., Zhai M.G., 2003. Accretion leading to collision and the Permian Solonker suture, Inner Mongolia, China: termination of the Central Asian Orogenic Belt. Tectonics 22 (6), 1069. https://doi.org/10.1029/ 2002TC001396.

The authors declare that there are no conflicts of interest present.