KMS Institute of Vertebrate Paleontology and Paleoanthropology
| New Ar-40/Ar-39 dating results from the Shanwang Basin, eastern China: Constraints on the age of the Shanwang Formation and associated biota | |
He, Huaiyu1; Deng, Chenglong2; Pan, Yongxin1; Deng, Tao3 ; Luo, Zhaohua4; Sun, Jimin2; Zhu, Rixiang2; [email protected]
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| 2011-07-01 | |
| 发表期刊 | PHYSICS OF THE EARTH AND PLANETARY INTERIORS
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| ISSN | 0031-9201 |
| 卷号 | 187期号:1-2页码:66-75 |
| 文章类型 | Article |
| 摘要 | The fluvio-lacustrine sequence of the Shanwang Basin, eastern China, preserves a rich and important terrestrial fossil fauna and flora; the exceptional preservation of these fossils reveals the dynamics of ancient mammalian ecosystems and plant biology. However, the timing of this sedimentary sequence has been the subject of debate for decades. Here we contribute to this debate by presenting the detailed results of Ar-40/Ar-39 analysis of the basalts above, below, and within the Shanwang Formation. These dates place stringent constraints on the age of Shanwang Formation and associated biota. Ar-40/Ar-39 ages obtained from basalts of the Niushan and Yaoshan Formations, which underlie and overlie the Shanwang Formation, are 21.0 +/- 2.5 Ma (2 sigma, full external error) and 17.3 +/- 1.5 Ma (2 sigma, full external error), respectively. The Ar-40/Ar-39 age of the basalt in the Shanwang Formation is 17-18 Ma. Given the age constraints of the basalts of the Yaoshan and Shanwang Formations, the age of the Shanwang biota is estimated to be ca. 17 Ma, late Burdigalian of the Early Miocene, indicating that the deposition of this fauna coincided with the onset of the mid-Miocene Climatic Optimum. The results provide new age constraints on the Shanwang mammal fauna, and independently support interpretations that this fauna can be assigned to chronozone MN4, and correlated with middle Orleanian of the European Land Mammal Age, and to late Hemingfordian of the North American Land Mammal Age. Biological diversity of the Shanwang Formation could reflect the global-scale mid-Miocene Climatic Optimum. (C) 2011 Elsevier B.V. All rights reserved. |
| 关键词 | Ar-40/ar-39 Dating Geochronology Shanwang Formation Shanwang Biota Miocene |
| WOS标题词 | Science & Technology ; Physical Sciences |
| URL | 查看原文 |
| 关键词[WOS] | WESTERN-EUROPE ; MIOCENE ; SHANDONG ; NEOGENE ; CLIMATE ; RECONSTRUCTION ; SUBDIVISION ; EVOLUTION ; RECORDS ; FLORA |
| 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:000293677500006 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.205/handle/311034/4405 |
| 专题 | 中科院古脊椎所（2000年以后） 古低等脊椎动物研究室 |
| 通讯作者 | [email protected] |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earths Deep Interior, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 3.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China 4.China Univ Geosci, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | He, Huaiyu,Deng, Chenglong,Pan, Yongxin,et al. New Ar-40/Ar-39 dating results from the Shanwang Basin, eastern China: Constraints on the age of the Shanwang Formation and associated biota[J]. PHYSICS OF THE EARTH AND PLANETARY INTERIORS,2011,187(1-2):66-75. |
| APA | He, Huaiyu.,Deng, Chenglong.,Pan, Yongxin.,Deng, Tao.,Luo, Zhaohua.,[email protected].(2011).New Ar-40/Ar-39 dating results from the Shanwang Basin, eastern China: Constraints on the age of the Shanwang Formation and associated biota.PHYSICS OF THE EARTH AND PLANETARY INTERIORS,187(1-2),66-75. |
| MLA | He, Huaiyu,et al."New Ar-40/Ar-39 dating results from the Shanwang Basin, eastern China: Constraints on the age of the Shanwang Formation and associated biota".PHYSICS OF THE EARTH AND PLANETARY INTERIORS 187.1-2(2011):66-75. |
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