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DOI | 10.1016/j.epsl.2021.116929 |
New early oligocene zircon U-Pb dates for the ‘Miocene’ Wenshan Basin, Yunnan, China: Biodiversity and paleoenvironment | |
Tian Y.; Spicer R.A.; Huang J.; Zhou Z.; Su T.; Widdowson M.; Jia L.; Li S.; Wu W.; Xue L.; Luo P.; Zhang S. | |
发表日期 | 2021 |
ISSN | 0012821X |
卷号 | 565 |
英文摘要 | The sedimentary basins of Yunnan, Southwest China, record detailed histories of Cenozoic paleoenvironmental change. They track regional tectonic and palaeobiological evolution, both of which are critically important for the development of modern floral diversity in southwestern China and throughout Asia more generally. However, to be useful, the sedimentary archives within the basins have to be placed within a well-constrained timeframe independent of biostratigraphy. Using high resolution U-Pb dating, we redefine the age of fossil-bearing strata in the Wenshan Basin. Regarded as Miocene for the last half century, these basin sediments encompass 30±2 and 32±1 Ma early Oligocene tuffaceous horizons, thus indicating a significantly greater antiquity than previously recognized. Together with other regional age revisions our result points to widespread Yunnan basin and orographic development as largely having taken place by the end Paleogene. This age revision provides an important new perspective on the preserved biotas and their evolution in Yunnan, and especially our understanding of the origin of Asian biodiversity which, regionally, had a near-modern composition by the early Oligocene. Crucially, this revised age evidences late Eocene-early Oligocene regional tectonism, pointing to the rise of eastern Tibet and the Hengduan Mountains before the growth of the Himalaya, and that Asia's high plant diversity has a Paleogene origin. © 2021 Elsevier B.V. |
关键词 | biodiversity hot spotpaleoenvironmentsedimentary basinSW ChinaU-Pb dating |
英文关键词 | Binary alloys; Geochronology; Lead alloys; Sedimentology; Uranium alloys; Zircon; Biodiversity hot spot; Early Oligocene; Miocene; Paleoenvironments; Paleogene; Sedimentary basin; Southwest China; SW china; U-Pb dating; Zircon U-Pb; Biodiversity; biodiversity; biostratigraphy; fossil; Oligocene; paleoenvironment; sedimentary basin; uranium-lead dating; zircon; China; Wenshan; Yunnan |
语种 | 英语 |
来源期刊 | Earth and Planetary Science Letters |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/203314 |
作者单位 | Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, 650093, China; CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Xishuangbanna, 666303, China; School of Environmental, Earth and Ecosystem Sciences, The Open University, Walton Hall, Milton Keynes, MK7 6AA, United Kingdom; Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China; Geology: School of Environmental Sciences, University of Hull, Hull, HU6 7RX, United Kingdom; CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650204, China; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Science, Beijing, 100029, China; Lancaster Environment Centre, Lancaster University, LA1 4YQ, Lancaster, United Kingdom |
推荐引用方式 GB/T 7714 | Tian Y.,Spicer R.A.,Huang J.,等. New early oligocene zircon U-Pb dates for the ‘Miocene’ Wenshan Basin, Yunnan, China: Biodiversity and paleoenvironment[J],2021,565. |
APA | Tian Y..,Spicer R.A..,Huang J..,Zhou Z..,Su T..,...&Zhang S..(2021).New early oligocene zircon U-Pb dates for the ‘Miocene’ Wenshan Basin, Yunnan, China: Biodiversity and paleoenvironment.Earth and Planetary Science Letters,565. |
MLA | Tian Y.,et al."New early oligocene zircon U-Pb dates for the ‘Miocene’ Wenshan Basin, Yunnan, China: Biodiversity and paleoenvironment".Earth and Planetary Science Letters 565(2021). |
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