High-resolution paleomagnetic constraint on the oldest hominoid- fossil-bearing sequence in the Xiaolongtan Basin, southeast margin of the Tibetan Plateau and its geologic implications | |
Zhang, WL (Zhang, Weilin)1,2; Yan, MD (Yan, Maodu)1,2; Fang, XM (Fang, Xiaomin)1,2; Zhang, DW (Zhang, Dawen)3; Zhang, T (Zhang, Tao)1; Zan, JB (Zan, Jinbo)1,2; Song, CH (Song, Chunhui)4,5 | |
Source Publication | GLOBAL AND PLANETARY CHANGE
![]() |
2019 | |
Volume | 182Issue:0Pages:103001 |
DOI | 10.1016/j.gloplacha.2019.103001 |
Abstract | Sediments in the Xiaolongtan Basin at the southeastern margin of the Tibetan Plateau (SEMTP) not only contain an abundance of the oldest Chinese hominoid fossils, but also a record of the evolution of the Indian monsoon and the uplift of the southeastern Tibetan Plateau. However, these Middle-Upper Miocene sedimentary sequences have lacked a precise chronology, hampering our ability to reconstruct the regional tectonic uplift and the paleoecological environment. We carried out high-resolution paleomagnetic dating throughout the fluvio-lacustrine sequence in the Xiaolongtan Basin. The 487.5 m-thick sequence here revealed 11 reversed and 11 normal zones that span from chron 5n.2n to chron 5ACr, yielding magnetostratigraphic ages of similar to 14.1-10.0 Ma for the section, and 12.5 Ma and 11.7 Ma for the two hominoid-fossil bearing beds. Combined with lithological analyses and the evidence for ecological characteristics, we suggest that four notable ecological environmental phases had emerged in the Xiaolongtan Basin after it was formed at around 14.1 Ma. These were as follows: Phase I (14.1-12.6 Ma) with humid-hot forest steppe, Phase II (12.6-11.6 Ma) with subtropical evergreen broad-leaved forest, Phase III (11.6-10.0 Ma) with a hot-dry and evaporative shallow lake and Phase IV (after 10.0 Ma) with a subtropical semiarid steppe environment. After similar to 10.0 Ma deposition gradually ceased, albeit recurring sporadically until the Early Pleistocene. |
Subject Area | Geology |
WOS ID | WOS:000490045000013 |
Language | 英语 |
Indexed By | SCI |
Keyword | Red-river Xianshuihe-xiaojiang Shear Zone Fault Zone Fold Test Yunnan Evolution Uplift China Magnetostratigraphy |
WOS Research Area | Physical Geography ; Geology |
WOS Subject | Geography, Physical ; Geosciences, Multidisciplinary |
Cooperation Status | 国内 |
ISSN | 0921-8181 |
Department | 大陆碰撞与高原隆升重点实验室 |
URL | 查看原文 |
Publisher | ELSEVIER |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.itpcas.ac.cn/handle/131C11/9109 |
Collection | 图书馆 |
Corresponding Author | Zhang, WL (Zhang, Weilin) |
Affiliation | 1.Chinese Acad Sci, Inst Tibetan Plateau Res, CAS Key Lab Continental Collis & Plateau Uplift, Beijing 100010, Peoples R China; 2.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China; 3.Zaozhuang Univ, Zaozhuang 277160, Peoples R China; 4.Lanzhou Univ, Sch Earth Sci, Lanzhou 730000, Gansu, Peoples R China; 5.Lanzhou Univ, Key Lab Western Chinas Mineral Resources Gansu Pr, Lanzhou 730000, Gansu, Peoples R China. |
Recommended Citation GB/T 7714 | Zhang, WL ,Yan, MD ,Fang, XM ,et al. High-resolution paleomagnetic constraint on the oldest hominoid- fossil-bearing sequence in the Xiaolongtan Basin, southeast margin of the Tibetan Plateau and its geologic implications[J]. GLOBAL AND PLANETARY CHANGE,2019,182(0):103001. |
APA | Zhang, WL .,Yan, MD .,Fang, XM .,Zhang, DW .,Zhang, T .,...&Song, CH .(2019).High-resolution paleomagnetic constraint on the oldest hominoid- fossil-bearing sequence in the Xiaolongtan Basin, southeast margin of the Tibetan Plateau and its geologic implications.GLOBAL AND PLANETARY CHANGE,182(0),103001. |
MLA | Zhang, WL ,et al."High-resolution paleomagnetic constraint on the oldest hominoid- fossil-bearing sequence in the Xiaolongtan Basin, southeast margin of the Tibetan Plateau and its geologic implications".GLOBAL AND PLANETARY CHANGE 182.0(2019):103001. |
Files in This Item: | ||||||
File Name/Size | DocType | Version | Access | License | ||
2019074.pdf(7765KB) | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment