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Remagnetization mechanisms in Triassic red beds from South China

文献类型：期刊论文

作者Jiang, Zhaoxia1,2,3; Liu, Qingsong2,4; Dekkers, Mark J.5; Zhao, Xiang3; Roberts, Andrew P.3; Yang, Zhenyu6; Jin, Chunsheng1; Liu, Jianxing2,7
刊名EARTH AND PLANETARY SCIENCE LETTERS
出版日期2017-12-01
卷号479页码:219-230
关键词Remagnetization Red Beds Hematite Chemical Remanent Magnetization Detrital Remanent Magnetization South China Block
ISSN号0012-821X
DOI10.1016/j.epsl.2017.09.019
文献子类Article
英文摘要Paleogeographic reconstructions based on paleomagnetic data rely on the reliability of the natural remanent magnetization (NRM) as a primary geomagnetic signal. Remagnetizations, however, can be common in many rock types, including late Paleozoic and Mesozoic red beds, and they complicate paleogeographic interpretations. Extracting the primary NRM from partially remagnetized rocks, and understanding the remagnetization mechanism are important in these contexts. We carried out a systematic paleomagnetic study of red bed samples from the Triassic Huangmaqing Formation, Nanjing (32.0 degrees N, 118.9 degrees E), South China. Two NRM components carried by secondary and primary hematite are isolated in 47 of the 94 samples studied, where the latter component has a direction in stratigraphic coordinates of D = 29.2 degrees, I = 34.6 degrees(alpha(95) = 10.9 degrees, 47 samples from 6 sites) that yields a paleopole of lambda = 60.8 degrees N,phi = 228.1 degrees E, dp/dm = 12.5/7.2, which is consistent with Triassic pole positions for the South China Block. A secondary chemical remanent magnetization (CRM) (D = 227.1 degrees, I = 80.8 degrees,alpha(95) = 7.3 degrees) is documented in all 94 samples from 10 sites and is carried by pigmentary hematite that is inferred to have been generated by magnetite oxidation during orogenic activity. This secondary component has steep inclinations and is interpreted to have been influenced by a combination of the remanence carried by original parent magnetite, the orogenic stress field, and the prevailing geomagnetic field direction during deformation. This CRM direction is recorded commonly by red beds from the South China Block, and is significant for regional tectonic studies in the area. (C) 2017 Elsevier B.V. All rights reserved.
WOS关键词CHEMICAL REMANENT MAGNETIZATION ; LATE PALEOZOIC REMAGNETIZATION ; POLAR WANDER PATH ; NEW-YORK-STATE ; SEDIMENTARY-ROCKS ; PALEOMAGNETIC DATA ; NORTH-AMERICA ; SECONDARY MAGNETIZATIONS ; MAGNETITE DISSOLUTION ; SOUTHWESTERN SICHUAN
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000415778600019
出版者ELSEVIER SCIENCE BV
资助机构National Key R&D Program of China(2016YFA0601903) ; National Key R&D Program of China(2016YFA0601903) ; National Natural Science Foundation of China(41430962 ; National Natural Science Foundation of China(41430962 ; National Program on Global Change and Air-Sea Interaction (GASI-GEOGE-03) ; National Program on Global Change and Air-Sea Interaction (GASI-GEOGE-03) ; Chinese Continental Shelf Deep Drilling Program(GZH201100202) ; Chinese Continental Shelf Deep Drilling Program(GZH201100202) ; China Postdoctoral Science Foundation(2015T80131) ; China Postdoctoral Science Foundation(2015T80131) ; Australian Research Council(DP120103952) ; Australian Research Council(DP120103952) ; 41374073 ; 41374073 ; 41504055 ; 41504055 ; 41230208) ; 41230208) ; National Key R&D Program of China(2016YFA0601903) ; National Key R&D Program of China(2016YFA0601903) ; National Natural Science Foundation of China(41430962 ; National Natural Science Foundation of China(41430962 ; National Program on Global Change and Air-Sea Interaction (GASI-GEOGE-03) ; National Program on Global Change and Air-Sea Interaction (GASI-GEOGE-03) ; Chinese Continental Shelf Deep Drilling Program(GZH201100202) ; Chinese Continental Shelf Deep Drilling Program(GZH201100202) ; China Postdoctoral Science Foundation(2015T80131) ; China Postdoctoral Science Foundation(2015T80131) ; Australian Research Council(DP120103952) ; Australian Research Council(DP120103952) ; 41374073 ; 41374073 ; 41504055 ; 41504055 ; 41230208) ; 41230208) ; National Key R&D Program of China(2016YFA0601903) ; National Key R&D Program of China(2016YFA0601903) ; National Natural Science Foundation of China(41430962 ; National Natural Science Foundation of China(41430962 ; National Program on Global Change and Air-Sea Interaction (GASI-GEOGE-03) ; National Program on Global Change and Air-Sea Interaction (GASI-GEOGE-03) ; Chinese Continental Shelf Deep Drilling Program(GZH201100202) ; Chinese Continental Shelf Deep Drilling Program(GZH201100202) ; China Postdoctoral Science Foundation(2015T80131) ; China Postdoctoral Science Foundation(2015T80131) ; Australian Research Council(DP120103952) ; Australian Research Council(DP120103952) ; 41374073 ; 41374073 ; 41504055 ; 41504055 ; 41230208) ; 41230208) ; National Key R&D Program of China(2016YFA0601903) ; National Key R&D Program of China(2016YFA0601903) ; National Natural Science Foundation of China(41430962 ; National Natural Science Foundation of China(41430962 ; National Program on Global Change and Air-Sea Interaction (GASI-GEOGE-03) ; National Program on Global Change and Air-Sea Interaction (GASI-GEOGE-03) ; Chinese Continental Shelf Deep Drilling Program(GZH201100202) ; Chinese Continental Shelf Deep Drilling Program(GZH201100202) ; China Postdoctoral Science Foundation(2015T80131) ; China Postdoctoral Science Foundation(2015T80131) ; Australian Research Council(DP120103952) ; Australian Research Council(DP120103952) ; 41374073 ; 41374073 ; 41504055 ; 41504055 ; 41230208) ; 41230208)
源URL[http://ir.iggcas.ac.cn/handle/132A11/62462]  
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Liu, Qingsong
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Qingdao Natl Oceanog Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China
3.Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT 2601, Australia
4.South Univ Sci & Technol, Shenzhen 518055, Peoples R China
5.Univ Utrecht, Fac Geosci, Dept Earth Sci, Budapestlaan 17, NL-3584 CD Utrecht, Netherlands
6.Capital Normal Univ, Coll Resource Environm & Tourism, Beijing 100048, Peoples R China
7.State Ocean Adm, Inst Oceanog 1, Key Lab Marine Sedimentol & Environm Geol, Qingdao 266061, Peoples R China
推荐引用方式
GB/T 7714		 Jiang, Zhaoxia,Liu, Qingsong,Dekkers, Mark J.,et al. Remagnetization mechanisms in Triassic red beds from South China[J]. EARTH AND PLANETARY SCIENCE LETTERS,2017,479:219-230.
APA Jiang, Zhaoxia.,Liu, Qingsong.,Dekkers, Mark J..,Zhao, Xiang.,Roberts, Andrew P..,...&Liu, Jianxing.(2017).Remagnetization mechanisms in Triassic red beds from South China.EARTH AND PLANETARY SCIENCE LETTERS,479,219-230.
MLA Jiang, Zhaoxia,et al."Remagnetization mechanisms in Triassic red beds from South China".EARTH AND PLANETARY SCIENCE LETTERS 479(2017):219-230.

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来源：地质与地球物理研究所

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