Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1346/CCMN.2012.0600302 |
CLAY MINERALOGY OF THE ZHADA SEDIMENTS: EVIDENCE FOR CLIMATIC AND TECTONIC EVOLUTION SINCE similar to 9 Ma IN ZHADA, SOUTHWESTERN TIBET | |
Hong, Hanlie1,2; Wang, Chaowen2; Zeng, Kefeng2; Zhang, Kexin1,2; Yin, Ke2; Li, Zhaohui3 | |
通讯作者 | Hong, Hanlie |
来源期刊 | CLAYS AND CLAY MINERALS
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ISSN | 0009-8604 |
出版年 | 2012 |
卷号 | 60期号:3页码:240-253 |
英文摘要 | The clay mineralogy of the Zhada sediments was investigated, using X-ray diffraction and scanning electron microscopy, to obtain a better understanding of climatic change and uplift of the Himalayas in the Zhada region of Tibet. The sediments of Zhada basin in the late Miocene to Pliocene consist of lacustrine and fluvial deposits >800 m thick and can be subdivided into five clay assemblage zones based on their clay-mineral composition. The upward zonation is as follows: (1) smectite-kaolinite; (2) illite-chlorite; (3) chlorite-illite-kaolinite; (4) illite-chlorite; and (5) smectite, illite, and kaolinite. The ratio of chlorite + illite to kaolinite + smectite (Ch+I/K+S) and the Kubler index indicate a warm and humid climate from 9.5 to 8.4 Ma, a cold and dry climate from 8.4 to 7.2 Ma, a warm and seasonal arid climate from 7.2 to 4.5 Ma, a cool and humid climate from 4.5 to 3.6 Ma, and a warm and seasonally humid climate from 3.6 to 3.0 Ma. Intense fluctuations in the Kubler index and in the quantities of evaporite minerals dolomite, aragonite, and gypsum, during the period 7.2-4.5 Ma suggest strong climatic fluctuations between humid and seasonally humid conditions in the Zhada basin. Rapid uplift around the Zhada basin occurred at 8.4 and 3.6 Ma, with sharp subsidence at 7.2 and 4.5 Ma. Evolution of the climate at Zhada showed a different model from that of global climate change, and tectonics-led climate change was the major contributor to climate evolution in the area. |
英文关键词 | Kubler Index Paleoclimate Tibetan Plateau Uplift Zhada Basin |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China ; USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000308834800002 |
WOS关键词 | MIOCENE ENVIRONMENTAL-CHANGE ; PALEOCLIMATIC INTERPRETATION ; THAKKHOLA GRABEN ; CENTRAL NEPAL ; LAKE BAIKAL ; PLATEAU ; UPLIFT ; BASIN ; RECORD ; INDIA |
WOS类目 | Chemistry, Physical ; Geosciences, Multidisciplinary ; Mineralogy ; Soil Science |
WOS研究方向 | Chemistry ; Geology ; Mineralogy ; Agriculture |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/171805 |
作者单位 | 1.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Hubei, Peoples R China; 2.China Univ Geosci, Fac Earth Sci, Wuhan 430074, Hubei, Peoples R China; 3.Univ Wisconsin Parkside, Dept Geosci, Kenosha, WI 53141 USA |
推荐引用方式 GB/T 7714 | Hong, Hanlie,Wang, Chaowen,Zeng, Kefeng,et al. CLAY MINERALOGY OF THE ZHADA SEDIMENTS: EVIDENCE FOR CLIMATIC AND TECTONIC EVOLUTION SINCE similar to 9 Ma IN ZHADA, SOUTHWESTERN TIBET[J],2012,60(3):240-253. |
APA | Hong, Hanlie,Wang, Chaowen,Zeng, Kefeng,Zhang, Kexin,Yin, Ke,&Li, Zhaohui.(2012).CLAY MINERALOGY OF THE ZHADA SEDIMENTS: EVIDENCE FOR CLIMATIC AND TECTONIC EVOLUTION SINCE similar to 9 Ma IN ZHADA, SOUTHWESTERN TIBET.CLAYS AND CLAY MINERALS,60(3),240-253. |
MLA | Hong, Hanlie,et al."CLAY MINERALOGY OF THE ZHADA SEDIMENTS: EVIDENCE FOR CLIMATIC AND TECTONIC EVOLUTION SINCE similar to 9 Ma IN ZHADA, SOUTHWESTERN TIBET".CLAYS AND CLAY MINERALS 60.3(2012):240-253. |
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