An Inclination Shallowing-Corrected Early Triassic Paleomagnetic Pole for the North China Craton: Implication for the Mesozoic Geography of Proto-Asia
文献类型：期刊论文
| 作者 | Zhao, Pan1,2,3; Appel, Erwin2; Xu, Bei4 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
 |
| 出版日期 | 2020-10-01 |
| 卷号 | 125期号:10页码:21 |
| ISSN号 | 2169-9313 |
| DOI | 10.1029/2020JB019489 |
| 英文摘要 | The Early Mesozoic is a key period for the formation of the Asia continent. In this study, in order to reconstruct the Early Mesozoic paleogeography of Proto-Asia, we carried out a paleomagnetic study on the Early Triassic strata from the Chengde Basin in the northeastern North China Craton (NCC). Rock magnetic investigations reveal magnetite and hematite as the main magnetic carriers. Characteristic remanent magnetization directions from 21 sites show normal and reversed polarities and site-mean directions pass fold tests. After inclination shallowing (IS) correction with the elongation/inclination method, a mean direction is calculated at D-s/I-s = 322.5 degrees/39.5 degrees (k(s) = 32.6, alpha(95s) = 5.7 degrees) in stratigraphic coordinates. The corresponding Early Triassic paleomagnetic pole (lambda/phi = 53.5 degrees N/9.5 degrees E, A(95) = 5.3 degrees) overlaps with coeval poles that have also been corrected for IS reported from the western part of the NCC. This result indicates that there is no relative movement between the eastern and western parts of the NCC. With all IS-corrected paleomagnetic poles, a mean Early Triassic pole is recalculated for the NCC at lambda/ phi= 59.4 degrees N/13.4 degrees E (A(95) = 4.7 degrees). We use this pole to reconstruct the paleogeography of Proto-Asia and confirm previous studies that did not use IS corrections, in which two "triangle bay-shaped" oceans, the Paleo-Tethys Ocean and the Mongol-Okhotsk Ocean, existed along the southern and northern margins of the unified NCC-Mongolian Block (MOB). Clockwise rotations of the South China Craton and Siberia Craton relative to the NCC-MOB during the Early Mesozoic led to the final closure of both oceans. |
| WOS关键词 | EASTERN INNER-MONGOLIA ; TECTONIC EVOLUTION ; XIABANCHENG BASIN ; SHANXI PROVINCE ; SIBERIAN TRAPS ; OROGENIC BELT ; OKHOTSK OCEAN ; WANDER PATH ; SOUTH CHINA ; TIME-SCALE |
| 资助项目 | National Key R&D Program of China[2017YFC0601302] ; National Nature Science Foundation of China[41888101] ; Chinese Academy of Sciences Pioneer Hundred Talents Program ; Alexander von Humboldt Foundation ; University Tubingen, Germany |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000604458900060 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 资助机构 | National Key R&D Program of China ; National Key R&D Program of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; Chinese Academy of Sciences Pioneer Hundred Talents Program ; Chinese Academy of Sciences Pioneer Hundred Talents Program ; Alexander von Humboldt Foundation ; Alexander von Humboldt Foundation ; University Tubingen, Germany ; University Tubingen, Germany ; National Key R&D Program of China ; National Key R&D Program of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; Chinese Academy of Sciences Pioneer Hundred Talents Program ; Chinese Academy of Sciences Pioneer Hundred Talents Program ; Alexander von Humboldt Foundation ; Alexander von Humboldt Foundation ; University Tubingen, Germany ; University Tubingen, Germany ; National Key R&D Program of China ; National Key R&D Program of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; Chinese Academy of Sciences Pioneer Hundred Talents Program ; Chinese Academy of Sciences Pioneer Hundred Talents Program ; Alexander von Humboldt Foundation ; Alexander von Humboldt Foundation ; University Tubingen, Germany ; University Tubingen, Germany ; National Key R&D Program of China ; National Key R&D Program of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; Chinese Academy of Sciences Pioneer Hundred Talents Program ; Chinese Academy of Sciences Pioneer Hundred Talents Program ; Alexander von Humboldt Foundation ; Alexander von Humboldt Foundation ; University Tubingen, Germany ; University Tubingen, Germany |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/99983]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 通讯作者 | Zhao, Pan |
| 作者单位 | 1.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing, Peoples R China 2.Univ Tubingen, Dept Geosci, Tubingen, Germany 3.Chinese Acad Sci, State Key Lab Lithospher Evolut, Inst Geol & Geophys, Beijing, Peoples R China 4.Hebei GEO Univ, Coll Earth Sci, Shijiazhuang, Hebei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Pan,Appel, Erwin,Xu, Bei. An Inclination Shallowing-Corrected Early Triassic Paleomagnetic Pole for the North China Craton: Implication for the Mesozoic Geography of Proto-Asia[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2020,125(10):21. |
| APA | Zhao, Pan,Appel, Erwin,&Xu, Bei.(2020).An Inclination Shallowing-Corrected Early Triassic Paleomagnetic Pole for the North China Craton: Implication for the Mesozoic Geography of Proto-Asia.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,125(10),21. |
| MLA | Zhao, Pan,et al."An Inclination Shallowing-Corrected Early Triassic Paleomagnetic Pole for the North China Craton: Implication for the Mesozoic Geography of Proto-Asia".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 125.10(2020):21. |
入库方式： OAI收割
来源：地质与地球物理研究所
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