Clockwise rotations recorded in Early Cretaceous rocks of South Korea: implications for tectonic affinity between the Korean Peninsula and North China
文献类型：期刊论文
| 作者 | Zhao, XX; Coe, RS; Chang, KH; Park, SO; Omarzai, SK; Zhu, RX; Zhou, YX; Gilder, S; Zheng, Z |
| 刊名 | GEOPHYSICAL JOURNAL INTERNATIONAL
 |
| 出版日期 | 1999-11-01 |
| 卷号 | 139期号:2页码:447-463 |
| 关键词 | Korea North China palaeomagnetism rotation |
| ISSN号 | 0956-540X |
| 文献子类 | Article |
| 英文摘要 | Recent interest has focused on whether South Korea may have undergone variable tectonic rotations since the Cretaceous, Tn an effort to contribute to the answer to this question, we have completed a palaeomagnetic reconnaissance study of Early Cretaceous sedimentary and igneous rocks from the Kyongsang basin in southeast Korea, Stepwise thermal demagnetization isolated well-defined characteristic magnetization in all samples. The palaeomagnetic directions reveal patterns of increasing amounts of clockwise (CW) rotation with increasing age for Aptian rock units. Palaeomagnetic declinations indicate clockwise vertical-axis rotations of R = 34.3 degrees +/- 6.9 degrees for the early Aptian rock unit, R = 24.9 degrees +/- 10.6 degrees for the middle Aptian, and R = -0.9 degrees +/- 11.8 degrees for the late Aptian relative to eastern Asia. The new Cretaceous palaeomagnetic data from this study are consistent with the hypothesis that Korea and other major parts of eastern Asia occupied the same relative positions in terms of palaeolatitudes in the Cretaceous, An analysis of and comparison with previously reported palaeomagnetic data corroborates this hypothesis and suggests that much of Korea may have been connected to the North China Block since the early Palaeozoic. A plausible cause of the rotation is the westward subduction of the Kula plate underneath the Asian continent, which is inferred to have occurred during the Cretaceous according to several geological and tectonic analyses. |
| WOS关键词 | TRIASSIC SEDIMENTARY-ROCKS ; PALEOMAGNETIC CONSTRAINTS ; REMAGNETIZATION ; COLLISION ; SHEAR ; BLOCK ; ZONE ; PART ; CORDILLERA ; SUPERGROUP |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000083538800014 |
| 出版者 | BLACKWELL SCIENCE LTD |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/75318]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zhao, XX |
| 作者单位 | 1.Univ Calif Santa Cruz, Inst Tecton, Dept Earth Sci, Santa Cruz, CA 95064 USA 2.Kyungpook Natl Univ, Dept Geol, Buk Ku, Taegu 702701, South Korea 3.Chinese Acad Sci, Inst Geophys, Beijing 100101, Peoples R China 4.Minist Geol & Min Resource, Inst Aerogeophys Ctr, Beijing 100083, Peoples R China 5.Inst Phys Globe, Lab Palaeomagnetisme, F-75252 Paris 05, France 6.Geosci Co Ltd, Geosci Anal Ctr, Taito Ku, Tokyo 1110041, Japan |
| 推荐引用方式 GB/T 7714 | Zhao, XX,Coe, RS,Chang, KH,et al. Clockwise rotations recorded in Early Cretaceous rocks of South Korea: implications for tectonic affinity between the Korean Peninsula and North China[J]. GEOPHYSICAL JOURNAL INTERNATIONAL,1999,139(2):447-463. |
| APA | Zhao, XX.,Coe, RS.,Chang, KH.,Park, SO.,Omarzai, SK.,...&Zheng, Z.(1999).Clockwise rotations recorded in Early Cretaceous rocks of South Korea: implications for tectonic affinity between the Korean Peninsula and North China.GEOPHYSICAL JOURNAL INTERNATIONAL,139(2),447-463. |
| MLA | Zhao, XX,et al."Clockwise rotations recorded in Early Cretaceous rocks of South Korea: implications for tectonic affinity between the Korean Peninsula and North China".GEOPHYSICAL JOURNAL INTERNATIONAL 139.2(1999):447-463. |
入库方式： OAI收割
来源：地质与地球物理研究所
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