Middle Paleozoic metamorphic and sedimentary events in the central Korean Peninsula and their geological implications
作者机构：Department of Earth and Environmental SciencesChonnam National University77Yongbong-roBuk-guGwangju 61186Republic of Korea Geology and Space DivisionKorea Institute of Geoscience and Mineral ResourcesDaejeon 34132Republic of Korea Department of Earth and Environmental SciencesJeonbuk National UniversityJeonju 561-756Republic of Korea
出 版 物：《Geoscience Frontiers》 (地学前缘（英文版）)
年 卷 期：2024年第15卷第5期
页 面：136-161页
核心收录：
学科分类：0709[理学-地质学] 070901[理学-矿物学、岩石学、矿床学] 07[理学]
基 金：supported by the Basic Research Project(GP2020-003,GP2021-004)of the Institute of Geoscience and Mineral Resources(KIGAM) funded by the Ministry of Science,ICT and Future Planning of the Republic of Korea This work was also supported by the National Research Foundation,Republic of Korea(RS-2023-00210128)
主 题：Central Korean Peninsula Middle Paleozoic Orogenic event Pressure-temperature estimation Zircon U-Pb-REE analysis
摘 要：The Middle Paleozoic tectonic evolution of the central Korean Peninsula(Gyeonggi Massif,Hongseong-Imjingang,and Okcheon zone of Okcheon Belts)remains ***,the occurrence of high-grade metamorphism and sedimentation need further *** this study,we conducted zircon U-Pb-rare earth element analyses from in the ultramafic-mafic complex in the central Korean Peninsula(Cheonan and Gapyeong areas)and the Paleozoic metasedimentary rocks in the Okcheon Zone of the Okcheon Belt to constrain the timing of maximum depositional and metamorphic *** also examined the metamorphic P-T-t path from garnet-bearing amphibolite in the central Korean Peninsula by pseudosection modeling and *** results show that(i)some of the ultramafic-mafic complex and metasedimentary rocks in the central Korean Peninsula formed during the Middle Paleozoic(ca.450–374 Ma);(ii)garnet-bearing amphibolite underwent successive metamorphism from amphibolite facies condition(7.5–8.0 kbar and 540–630℃)at pre-peak stage to granulite facies condition(10.9–11.8 kbar and 740–820℃)at peak stage,and then retrograded into amphibolite facies condition(5.7–7.7 kbar and 530–670℃)along the clockwise P–T path during ca.403–362 *** and previous studies suggest that the central Korean Peninsula underwent subduction-related orogenic events during the Middle Paleozoic era,and it is well correlated to those of the orogenic events in the North Qinling belt.
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