高原(数学)
中新世晚期
地质学
铁杉
新生代
古生物学
自然地理学
地理
生态学
构造盆地
生物
数学
数学分析
作者
Yunfa Miao,Xiaomin Fang,Jimin Sun,Wenjiao Xiao,Yong Yang,Xuelian Wang,Alex Farnsworth,Kangyou Huang,Yulong Ren,Fuli Wu,Qingqing Qiao,Weilin Zhang,Qing Meng,Xiaoli Yan,Zhuo Zheng,Chunhui Song,Torsten Utescher
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2022-12-09
卷期号:378 (6624): 1074-1079
被引量:37
标识
DOI:10.1126/science.abo2475
摘要
The uplift of the Tibet Plateau (TP) during the Miocene is crucial to understanding the evolution of Asian monsoon regimes and alpine biodiversity. However, the northern Tibet Plateau (NTP) remains poorly investigated. We use pollen records of montane conifers (Tsuga, Podocarpus, Abies, and Picea) as a new paleoaltimetry to construct two parallel midrange paleoelevation sequences in the NTP at 1332 ± 189 m and 433 ± 189 m, respectively, during the Middle Miocene [~15 million years ago (Ma)]. Both midranges increased rapidly to 3685 ± 87 m in the Late Miocene (~11 Ma) in the east, and to 3589 ± 62 m at ~7 Ma in the west. Our estimated rises in the east and west parts of the NTP during 15 to 7 Ma, together with data from other TP regions, indicate that during the Late Miocene the entire plateau may have reached a high elevation close to that of today, with consequent impacts on atmospheric precipitation and alpine biodiversity.
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