KMS Institute of Vertebrate Paleontology and Paleoanthropology
| An integrated stratigraphic record from the Paleocene of the Chijiang Basin, Jiangxi Province (China): Implications for mammalian turnover and Asian block rotations | |
Clyde, William C.1; Tong, Yongsheng2; Snell, Kathryn E.3; Bowen, Gabriel J.4; Ting, Suyin5; Koch, Paul L.3; Li, Qian2 ; Wang, Yuanqing2; Meng, Jin6; [email protected]
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| 2008-05-30 | |
| 发表期刊 | EARTH AND PLANETARY SCIENCE LETTERS
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| ISSN | 0012-821X |
| 卷号 | 269期号:3-4页码:553-563 |
| 文章类型 | Article |
| 摘要 | New paleomagnetic and isotopic results from a similar to 1000 meter thick Paleocene stratigraphic section in the Chijiang Basin of China's Jiangxi Province provide chromostratigraphic constraints on the Shanghuan-Nongshanian Asian Land Mammal Age boundary and allow for a more accurate determination of an early Paleogene paleomagnetic pole for the South China Block. Paleomagnetic analysis of 121 sites (326 samples) reveals that the Shanghuan-Nongshanian boundary lies close to a normal-to-reverse polarity change. Stable carbon isotope analysis of dispersed organic matter and paleosol carbonates indicate a secular increase of similar to 1.5%. superimposed on higher frequency variations. Correlation of this magnetochemostratigraphic pattern to the global timescale suggests that the polarity reversal near the Shanghuan-Nongshanian boundary likely represents the Chron C27n-C26r transition. The Torrejonian-Tiffanian North American Land Mammal Age boundary is closely correlated to this same polarity transition, indicating nearly synchronous global mammalian turnover at this time. Because both Land Mammal Age boundaries are thought to record turnover of mostly endemic taxa, it is unlikely that the synchroneity of faunal change is due to intercontinental dispersal as documented for other early Paleogene faunal transitions (e.g. Paleocene-Eocene boundary). Instead, these mammalian faunal transitions may represent independent ecological or evolutionary responses to environmental changes that have been interpreted from marine records at this time (e.g. "Top Chron 27n Event"). These new paleomagnetic results from the Chijiang Basin are also used to augment other published data and to calculate a Paleocene paleomagnetic pole for the South China Block. The new pole shows no significant vertical axis rotation compared to the Paleocene reference pole for Eurasia indicating that much of the clockwise rotation that has been documented for the South China Block from Cretaceous deposits cannot be the result of extrusion tectonics associated with the early Paleogene India-Asia collision. Observed Cretaceous rotations of the South China Block may be the result of late Cretaceous-early Paleocene rifting in the backarc of the Kula-Pacific subduction zone. (C) 2008 Elsevier B.V. All rights reserved. |
| 关键词 | Paleocene Mammals China Paleoclimate Stratigraphy Paleomagnetism |
| WOS标题词 | Science & Technology ; Physical Sciences |
| URL | 查看原文 |
| 关键词[WOS] | MESOZOIC OVERTHRUST TECTONICS ; CRETACEOUS RED BEDS ; SOUTH-CHINA ; INTERNAL DEFORMATION ; PALEOMAGNETIC DATA ; BIGHORN BASIN ; COLLISION ; INDIA ; NORTHWEST ; EURASIA |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Geochemistry & Geophysics |
| WOS类目 | Geochemistry & Geophysics |
| WOS记录号 | WOS:000256709400024 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.205/handle/311034/4833 |
| 专题 | 中科院古脊椎所（2000年以后） 古低等脊椎动物研究室 古哺乳动物研究室 |
| 通讯作者 | [email protected] |
| 作者单位 | 1.Univ New Hampshire, Dept Earth Sci, Durham, NH 03824 USA 2.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China 3.Univ Calif Santa Cruz, Dept Earth & Planetary Sci, Santa Cruz, CA 95064 USA 4.Purdue Univ, Dept Earth & Atmospher Sci, W Lafayette, IN 47907 USA 5.Louisiana State Univ, Museum Nat Sci, Baton Rouge, LA 70803 USA 6.Amer Museum Nat Hist, Dept Vertebrate Paleontol, New York, NY 10024 USA |
| 推荐引用方式 GB/T 7714 | Clyde, William C.,Tong, Yongsheng,Snell, Kathryn E.,et al. An integrated stratigraphic record from the Paleocene of the Chijiang Basin, Jiangxi Province (China): Implications for mammalian turnover and Asian block rotations[J]. EARTH AND PLANETARY SCIENCE LETTERS,2008,269(3-4):553-563. |
| APA | Clyde, William C..,Tong, Yongsheng.,Snell, Kathryn E..,Bowen, Gabriel J..,Ting, Suyin.,[email protected].(2008).An integrated stratigraphic record from the Paleocene of the Chijiang Basin, Jiangxi Province (China): Implications for mammalian turnover and Asian block rotations.EARTH AND PLANETARY SCIENCE LETTERS,269(3-4),553-563. |
| MLA | Clyde, William C.,et al."An integrated stratigraphic record from the Paleocene of the Chijiang Basin, Jiangxi Province (China): Implications for mammalian turnover and Asian block rotations".EARTH AND PLANETARY SCIENCE LETTERS 269.3-4(2008):553-563. |
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