KMS Institute of Vertebrate Paleontology and Paleoanthropology
| Magnetostratigraphic constraints on the fossiliferous Ulantatal sequence in Inner Mongolia, China: Implications for Asian aridification and faunal turnover before the Eocene-Oligocene boundary | |
Wasiljeff, Joonas1; Kaakinen, Anu1; Salminen, Johanna M.1,2; Zhang, Zhaoqun3,4,5
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| 2020-04-15 | |
| 发表期刊 | EARTH AND PLANETARY SCIENCE LETTERS
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| ISSN | 0012-821X |
| 卷号 | 536页码:15 |
| 通讯作者 | Kaakinen, Anu([email protected]) ; Zhang, Zhaoqun([email protected]) |
| 摘要 | The transition from Eocene to Oligocene and its implications in the terrestrial realm has been a focal target for Cenozoic climate and environment research as it is widely considered the most dramatic climatic shift of the past 50 million years. Tibetan Plateau and proximal areas have been of utmost interest since the biogeographic relationships and understanding of the depositional environments in the region have remained unsettled during and after the Eocene-Oligocene transition (EOT). This study derives a first chronostratigraphic framework for Ulantatal, a fossiliferous area in Inner Mongolia, China. Based on paleomagnetic reversal stratigraphy and the constraints of faunal correlations, the time spanned in the strata is between ca. 35 and 27 Ma, thus exposing a long sedimentary succession ranging from the latest Eocene to late Oligocene. The lithological characteristics reveal these extensive fine-grained sediments mainly originate from eolian dust deposition, the onset of which is constrained at the latest Eocene (ca. 34.8 Ma). The presence of post "Mongolian Remodeling" fauna already in the late Eocene of Ulantatal demonstrates unequivocally that the major faunal turnover preceded the Eocene-Oligocene boundary, earlier to what has been recorded from other East Asian localities. The faunal composition predominated by rodents and lagomorphs remains strikingly stable across the Eocene-Oligocene boundary, suggesting the EOT related change in the animal communities was gradual or stepwise rather than abrupt. Moreover, the turnover into this environment dominated by small mammals can be linked with Eocene acidification of Asia, highlighting the dynamic responses of terrestrial systems to changing environment and climate associated with the EOT. (C) 2020 The Author(s). Published by Elsevier B.V. |
| 关键词 | Eocene-Oligocene boundary magnetostratigraphy eolian dust Mongolian Remodeling mammalian fossils Asian aridification |
| DOI | 10.1016/j.epsl.2020.116125 |
| 关键词[WOS] | RED CLAY DEPOSITS ; SEA RETREAT ; TIME-SCALE ; CLIMATE ; TRANSITION ; STABILITY ; BASIN ; BIOSTRATIGRAPHY ; ACCUMULATION ; SEASONALITY |
| 收录类别 | SCI |
| 语种 | 英语 |
| 资助项目 | Research Council of Norway[226214] ; Centre for Earth Evolution and Dynamics, University of Oslo ; CAS[XDB26000000] ; NSFC[41472003] ; Academy of Finland[316799] ; Academy of Finland[319277] ; GeoDoc ; Waldemar von Frenckell Foundation |
| 项目资助者 | Research Council of Norway ; Centre for Earth Evolution and Dynamics, University of Oslo ; CAS ; NSFC ; Academy of Finland ; GeoDoc ; Waldemar von Frenckell Foundation |
| WOS研究方向 | Geochemistry & Geophysics |
| WOS类目 | Geochemistry & Geophysics |
| WOS记录号 | WOS:000521110800017 |
| 出版者 | ELSEVIER |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.205/handle/311034/17298 |
| 专题 | 中科院古脊椎所（2000年以后） |
| 通讯作者 | Kaakinen, Anu; Zhang, Zhaoqun |
| 作者单位 | 1.Univ Helsinki, Dept Geosci & Geog, POB 64, FIN-00014 Helsinki, Finland 2.Univ Helsinki, Dept Phys, POB 64, FIN-00014 Helsinki, Finland 3.Chinese Acad Sci, Key Lab Vertebrate Evolut & Human Origin, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China 4.CAS Ctr Excellence Life & Paleoenvironm, Beijing, Peoples R China 5.Univ Chinese Acad Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wasiljeff, Joonas,Kaakinen, Anu,Salminen, Johanna M.,et al. Magnetostratigraphic constraints on the fossiliferous Ulantatal sequence in Inner Mongolia, China: Implications for Asian aridification and faunal turnover before the Eocene-Oligocene boundary[J]. EARTH AND PLANETARY SCIENCE LETTERS,2020,536:15. |
| APA | Wasiljeff, Joonas,Kaakinen, Anu,Salminen, Johanna M.,&Zhang, Zhaoqun.(2020).Magnetostratigraphic constraints on the fossiliferous Ulantatal sequence in Inner Mongolia, China: Implications for Asian aridification and faunal turnover before the Eocene-Oligocene boundary.EARTH AND PLANETARY SCIENCE LETTERS,536,15. |
| MLA | Wasiljeff, Joonas,et al."Magnetostratigraphic constraints on the fossiliferous Ulantatal sequence in Inner Mongolia, China: Implications for Asian aridification and faunal turnover before the Eocene-Oligocene boundary".EARTH AND PLANETARY SCIENCE LETTERS 536(2020):15. |
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