KMS Nanjing Institute of Geology and Palaeonotology,CAS
Tectonic Evolution of Southeast Central Asian Orogenic Belt: Evidence from Geochronological Data and Paleontology of the Early Paleozoic Deposits in Inner Mongolia | |
Wang, Shijie1; Li, Shichao1,2; Li, Wenjie3; Xu, Zhongyuan1; Zhang, Jinfeng4; Li, Changhai1; Shi, Qiang1; Liu, Yang5; Wang, Wenlong5; Guan, Qingbin6 | |
2020-08-01 | |
发表期刊 | JOURNAL OF EARTH SCIENCE |
ISSN | 1674-487X |
卷号 | 31期号:4页码:743-756 |
摘要 | In this study, we present detrital zircon U-Pb dating and paleontological data for the newly identified Ayadeng Formation in the northern margin of the North China Block (NCB) and Xibiehe Formation (molasse) in the Bainaimiao arc belt (BAB), which could provide strong evidence indicating the affinity of the BAB and the evolution of the southeast Central Asian orogenic belt (CAOB). Zircon U-Pb data of siltstone samples and paleontological data indicate the Ayadeng Formation dates back to the Early Ordovician. Although its location is near the NCB, its zircon age spectra and paleontology share a closer affinity with those of Tarim and NE Gondwana, as the U-Pb data suggest an age range of 490-2 192 Ma (peak age=629, 788, 965 and 1 935 Ma), and similar gastropod fossils are found in Tarim and NE Gondwana. The U-Pb ages of meta-sandstone samples in the Xuniwusu Formation indicate a shared inheritance with the Ayadeng Formation (before 440 Ma), and the U-Pb ages of sandstone samples in the Xibiehe Formation are concentrated, with age peaks centered at ca. 420 Ma. Fossil corals occur in these two formations, and their age components also indicate a collisional setting. Therefore, it is speculated that the BAB drifted away from Tarim or NE Gondwana during the Ordovician and became attached to northern NCB between 440-420 Ma as an exotic terrane. During the Early Paleozoic, there may have occurred a collision between an arc and a continental block. |
关键词 | detrital zircon paleontology Bainaimiao arc belt North China Block |
DOI | 10.1007/s12583-020-1326-6 |
收录类别 | SCI |
语种 | 英语 |
关键词[WOS] | NORTH CHINA CRATON ; U-PB GEOCHRONOLOGY ; GEOLOGICAL SIGNIFICANCE ; CRUSTAL GROWTH ; BAINAIMIAO ARC ; VOLCANIC-ROCKS ; ONDOR SUM ; ZIRCON ; GEOCHEMISTRY ; MARGIN |
WOS研究方向 | Geology |
WOS类目 | Geosciences, Multidisciplinary |
WOS记录号 | WOS:000565208800009 |
出版者 | CHINA UNIV GEOSCIENCES, WUHAN |
文献类型 | 期刊论文 |
条目标识符 | http://ir.nigpas.ac.cn/handle/332004/32244 |
专题 | 中国科学院南京地质古生物研究所 |
通讯作者 | Li, Shichao |
作者单位 | 1.Jilin Univ, Coll Earth Sci, Changchun 130061, Peoples R China 2.Minist Nat Resources, Key Lab Mineral Resources Evaluat Northeast Asia, Changchun 130061, Peoples R China 3.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Nanjing 210008, Peoples R China 4.Northeast Petr Univ, Sch Earth Sci, Daqing 163318, Peoples R China 5.China Geol Survey, Tianjin Ctr Geol Survey, Tianjin 300170, Peoples R China 6.Ocean Univ China, Inst Adv Ocean Study, Key Lab Submarine Geosci & Prospecting Tech, MOE,Coll Marine Geosci, Qingdao 266237, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Shijie,Li, Shichao,Li, Wenjie,et al. Tectonic Evolution of Southeast Central Asian Orogenic Belt: Evidence from Geochronological Data and Paleontology of the Early Paleozoic Deposits in Inner Mongolia[J]. JOURNAL OF EARTH SCIENCE,2020,31(4):743-756. |
APA | Wang, Shijie.,Li, Shichao.,Li, Wenjie.,Xu, Zhongyuan.,Zhang, Jinfeng.,...&Guan, Qingbin.(2020).Tectonic Evolution of Southeast Central Asian Orogenic Belt: Evidence from Geochronological Data and Paleontology of the Early Paleozoic Deposits in Inner Mongolia.JOURNAL OF EARTH SCIENCE,31(4),743-756. |
MLA | Wang, Shijie,et al."Tectonic Evolution of Southeast Central Asian Orogenic Belt: Evidence from Geochronological Data and Paleontology of the Early Paleozoic Deposits in Inner Mongolia".JOURNAL OF EARTH SCIENCE 31.4(2020):743-756. |
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