IEECAS OpenIR  > 加速器质谱中心
Evolution of the Miocene megalake in the western Qaidam Basin, northwestern China
Liang, Yu1; Zhang, Bin2; Zhang, Yongshu3; Zhang, Yancheng1,4; Wang, Jun1,5; Liu, Zhonghui1,6
通讯作者Liu, Zhonghui(zhliu@hku.hk)
2021-06-01
发表期刊PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN0031-0182
卷号571页码:8
摘要Thick Miocene lacustrine deposits have been identified across the Qaidam Basin on the northeast Tibetan Plateau, indicative of a relatively unified megalake then. How this megalake evolved at its final stage and associated controlling factors, e.g., global climate or tectonic uplift, remain largely elusive. Here we use the KC-1 well, drilled at the depo-center of the western Qaidam Basin, to investigate the megalake evolution over the mid- and late Miocene. A set of lipid biomarker indices, namely beta-carotane/n-C-36, gammacerane index, terrigenous/aquatic ratio and long-chain saturated ketone content, altogether indicate substantial lake level fluctuations, with lower lake level at the intervals of similar to 18-17 Ma, 13.5-11.5 Ma, 10.5-8 Ma and 7-6 Ma, and higher level at the intervals of similar to 7-13.5 Ma, 11.5-10.5 Ma, 8-7 Ma and 6-5 Ma, superimposed on the long-term shrinking trend. Direct comparison with existing regional and global temperature records suggests that such lake dynamics was largely associated with global climatic conditions, i.e., shrinking under relatively cool conditions and vice versa, for both its long-term evolution and secondary fluctuations. It thus appears that global climatic conditions had controlled the megalake status during the mid- and late Miocene, whereas tectonic activities then might have also contributed to its long-term gradual demise.
关键词Hydrological changes Paleolake Tibetan Plateau Biomarkers
DOI10.1016/j.palaeo.2021.110384
关键词[WOS]TIBETAN PLATEAU IMPLICATIONS ; CLIMATE-CHANGE ; CENTRAL-ASIA ; ISOTOPIC CONSTRAINTS ; TECTONIC EVOLUTION ; TARIM BASIN ; ARIDIFICATION ; UPLIFT ; RECORD ; BIOMARKER
收录类别SCI ; SCI
语种英语
资助项目Chinese Academy of Sciences[XDB40000000] ; Hong Kong Research Grants Council[17305019] ; HKU Postgraduate Studentship
WOS研究方向Physical Geography ; Geology ; Paleontology
项目资助者Chinese Academy of Sciences ; Hong Kong Research Grants Council ; HKU Postgraduate Studentship
WOS类目Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS记录号WOS:000643685200016
出版者ELSEVIER
引用统计
被引频次:13[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/16451
专题加速器质谱中心
通讯作者Liu, Zhonghui
作者单位1.Univ Hong Kong, Dept Earth Sci, Hong Kong, Peoples R China
2.China Natl Petr Corp, Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China
3.China Natl Petr Corp, Qinghai Oilfield, Dunhuang 736202, Peoples R China
4.Sun Yat Sen Univ, Sch Marine Sci, Zhuhai 519000, Peoples R China
5.Yunnan Univ, Sch Earth Sci, Kunming 650500, Yunnan, Peoples R China
6.Chinese Acad Sci, Ctr Excellence Quaternary Sci & Global Change, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
推荐引用方式
GB/T 7714
Liang, Yu,Zhang, Bin,Zhang, Yongshu,et al. Evolution of the Miocene megalake in the western Qaidam Basin, northwestern China[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2021,571:8.
APA Liang, Yu,Zhang, Bin,Zhang, Yongshu,Zhang, Yancheng,Wang, Jun,&Liu, Zhonghui.(2021).Evolution of the Miocene megalake in the western Qaidam Basin, northwestern China.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,571,8.
MLA Liang, Yu,et al."Evolution of the Miocene megalake in the western Qaidam Basin, northwestern China".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 571(2021):8.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Liang, Yu]的文章
[Zhang, Bin]的文章
[Zhang, Yongshu]的文章
百度学术
百度学术中相似的文章
[Liang, Yu]的文章
[Zhang, Bin]的文章
[Zhang, Yongshu]的文章
必应学术
必应学术中相似的文章
[Liang, Yu]的文章
[Zhang, Bin]的文章
[Zhang, Yongshu]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。