Understanding Miocene Climate Evolution in Northeastern Tibet: Stable Carbon and Oxygen Isotope Records from the Western Tianshui Basin, China | |
Hou, ZF (Hou, Zhanfang)[ 1,2,3,4 ]; Li, JJ (Li, Jijun)[ 2,3,5 ]; Song, CH (Song, Chunhui)[ 3,6 ]; Zhang, J (Zhang, Jun)[ 2,3 ]; Hui, ZC (Hui, Zhengchuang)[ 2,3 ]; Chen, SY (Chen, Shiyue)[ 7 ]; Xian, F (Xian, Feng)[ 1 ] | |
2014-04-15 | |
发表期刊 | JOURNAL OF EARTH SCIENCE |
卷号 | 25期号:2页码:357-365 |
文章类型 | 期刊论文 |
摘要 | To investigate climate evolution during the Miocene, especially during the Middle Miocene climate transition on the northeastern Tibetan Plateau, stable oxygen and carbon isotopes of carbonates from a 288-m-thick lacustrine-fluvial sediment sequence covering the period from 17.1 to 6.1 Ma from Tianshui Basin, China, were analyzed. The relatively low stable oxygen isotope values indicate the prevalence of wet climate conditions during the period of 17.1-13.6 Ma, an interval corresponding to the well-known Middle Miocene Climate Optimum. The interval between 13.6 and 11.0 Ma (i.e., the late Middle Miocene) is marked by a progressive increase in the delta O-18 values, indicative of a decrease in precipitation, probably linked to the expansion of the East Antarctic Ice Sheet and global cooling since about 14 Ma. The climate in the study area continued to get drier as shown by the enrichment of the heavy oxygen isotope from 11 Ma. We attribute these stepwise climatic changes as revealed by our carbonate delta O-18 record from the northeastern Tibetan Plateau to the sustained global cooling that may have reduced moist transport to Central Asia, which in turn led to a permanent aridification. |
DOI | 10.1007/s12583-014-0416-8 |
收录类别 | SCIE |
语种 | 英语 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/9725 |
专题 | 加速器质谱中心 |
通讯作者 | Hou, ZF (Hou, Zhanfang)[ 1,2,3,4 ] |
作者单位 | 1.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment,Chinese Academy of Sciences, Xi’an 710054, China; 2.College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China; 3.MOE Key Laboratory of Western China’s Environmental Systems, Lanzhou University, Lanzhou 730000, China; 4.Graduate University of Chinese Academy of Sciences, Beijing 100039, China; 5.College of Geography Sciences, Nanjing Normal University, Nanjing 210097, China; 6.School of Earth Sciences, Lanzhou University, Lanzhou 730000, China; 7.College of Environment and Planning, Liaocheng University, Liaocheng 252000, China |
推荐引用方式 GB/T 7714 | Hou, ZF ,Li, JJ ,Song, CH ,et al. Understanding Miocene Climate Evolution in Northeastern Tibet: Stable Carbon and Oxygen Isotope Records from the Western Tianshui Basin, China[J]. JOURNAL OF EARTH SCIENCE,2014,25(2):357-365. |
APA | Hou, ZF .,Li, JJ .,Song, CH .,Zhang, J .,Hui, ZC .,...&Xian, F .(2014).Understanding Miocene Climate Evolution in Northeastern Tibet: Stable Carbon and Oxygen Isotope Records from the Western Tianshui Basin, China.JOURNAL OF EARTH SCIENCE,25(2),357-365. |
MLA | Hou, ZF ,et al."Understanding Miocene Climate Evolution in Northeastern Tibet: Stable Carbon and Oxygen Isotope Records from the Western Tianshui Basin, China".JOURNAL OF EARTH SCIENCE 25.2(2014):357-365. |
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Understanding Miocen(786KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 请求全文 |
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