DOI: 10.1016/j.gloplacha.2014.12.007
论文题名: Paleoelevation of Tibetan Lunpola basin in the Oligocene-Miocene transition estimated from leaf wax lipid dual isotopes
作者: Jia G. ; Bai Y. ; Ma Y. ; Sun J. ; Peng P.
刊名: Global and Planetary Change
ISSN: 0921-8181
出版年: 2015
卷: 126 起始页码: 14
结束页码: 22
语种: 英语
英文关键词: Dual isotopes
; Leaf wax n-alkane
; Lunpola basin
; Paleoelevation
; Tibetan Plateau
Scopus关键词: Isotopes
; Carbon and hydrogens
; Central Tibetan plateau
; Early Miocene
; Latest Oligocene
; Lunpola basins
; n-Alkanes
; Paleoelevation
; Tibetan Plateau
; Paraffins
; carbon isotope
; fossil record
; hydrogen isotope
; isotopic composition
; lowland environment
; mammal
; Miocene
; Oligocene
; paleosol
; palynology
; unroofing
; wax
; China
; Lunpola Basin
; Xizang
; Mammalia
英文摘要: Carbon and hydrogen isotopic compositions of leaf wax n-alkanes are promising paleoelevation proxies. In this paper, the two proxies were applied to the Dingqing Formation in the Lunpola basin in the central Tibetan Plateau to reconstruct paleoelevation of the basin from the latest Oligocene to the early Miocene. Values of δ13C and δD of C29 n-alkane were -29.8±0.7‰ (n=38) and -188±10‰ (n=22), respectively. Using the δ13C and δ18O of the early Miocene Siwalik paleosol carbonate in south Asia as lowland references, paleoelevation of ~3000m was independently estimated from the two isotopic proxies. The results are consistent with recent estimates from pollen and mammal fossil studies. Furthermore, the time-series leaf wax δ13C and δD records consistently suggest a reduction of ~900m from 25.5Ma to 21.6Ma, which is likely associated with rapid erosion or tectonic unroofing. © 2015 Elsevier B.V. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84921350597&doi=10.1016%2fj.gloplacha.2014.12.007&partnerID=40&md5=d4ee18282aa66b32dea9c8a254a49c37
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/11557
Appears in Collections: 全球变化的国际研究计划 气候变化与战略
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作者单位: State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China
Recommended Citation:
Jia G.,Bai Y.,Ma Y.,et al. Paleoelevation of Tibetan Lunpola basin in the Oligocene-Miocene transition estimated from leaf wax lipid dual isotopes[J]. Global and Planetary Change,2015-01-01,126.