干旱区生态环境知识资源中心(Arid): Reconstructing Late Quaternary Palaeo-environmental change from the dryland fluvial landscape of the Southern Kachchh Mainland, western India: Insights from new OSL and sedimentological datasets

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DOI	10.1002/gj.3861
	Reconstructing Late Quaternary Palaeo-environmental change from the dryland fluvial landscape of the Southern Kachchh Mainland, western India: Insights from new OSL and sedimentological datasets
	Das, Archana 1; Joseph, Jaquilin 1; Solanki, Tarun 1; Makwana, Nisarg 1; Chauhan, Gaurav 2; Thakkar, Mahesh G.2
通讯作者	Das, Archana
来源期刊	GEOLOGICAL JOURNAL
ISSN	0072-1050
EISSN	1099-1034
出版年	2020
卷号	55 期号:10 页码:7041-7056
英文摘要	The southern Kachchh Mainland (SKM) of western India, situated in a seismically active intraplate region with a considerable Quaternary landscape, provides an opportunity to reconstruct the roles of climate and tectonics. Employing geomorphology, detailed sedimentology supported by geochemistry and optical dating, we integrate the fluvial to fluvio-marine records to evaluate the potential of dryland environments in archiving the palaeo-events. The climate reconstructions suggest that the fluvial systems have responded to the variations in monsoonal strength through widespread aggradation during 57 until 41 ka, corresponding to the later part of the MIS-3. Following this, a relative weakening of monsoon and onset of aridity is observed between 28 and 11 ka, with short spells of enhanced monsoon. The monsoonal conditions again strengthened during 11 to 6 ka, reaching its maximum during the Early Holocene optima, which triggered a sea-level rise during the Middle Holocene period, that is, 6 to 3 ka. Following this, the sequences incised in response to the relative sea-level fall to the present level in post 3 ka. We have also employed this OSL ages to reconstruct the phases of aggradation and incision of valley fill sediments/estuarine tidal terraces from the SKM during the last 57 ka. The present study illustrates and contributes to the advancement in understanding of complex processes and their influence on climatic/tectonic signals in dryland landscape as well as their decoupling.
英文关键词	aggradation-incision cycle dryland valley fill OSL chronology southern Kachchh Mainland western India
类型	Article
语种	英语
国家	India
收录类别	SCI-E
WOS记录号	WOS:000534563500001
WOS关键词	KATROL HILL FAULT ; ALLUVIAL-FAN ; TECTONIC ACTIVITY ; TERRACE FORMATION ; THAR DESERT ; RIVER-BASIN ; CLIMATE ; EVOLUTION ; LUMINESCENCE ; GUJARAT
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319163
作者单位	1.Inst Seismol Res, Act Tecton Grp, Raisan 382009, Gandhinagar, India; 2.KSKV Kachchh Univ, Dept Earth & Environm Studies, Bhuj, India
推荐引用方式 GB/T 7714	Das, Archana,Joseph, Jaquilin,Solanki, Tarun,et al. Reconstructing Late Quaternary Palaeo-environmental change from the dryland fluvial landscape of the Southern Kachchh Mainland, western India: Insights from new OSL and sedimentological datasets[J],2020,55(10):7041-7056.
APA	Das, Archana,Joseph, Jaquilin,Solanki, Tarun,Makwana, Nisarg,Chauhan, Gaurav,&Thakkar, Mahesh G..(2020).Reconstructing Late Quaternary Palaeo-environmental change from the dryland fluvial landscape of the Southern Kachchh Mainland, western India: Insights from new OSL and sedimentological datasets.GEOLOGICAL JOURNAL,55(10),7041-7056.
MLA	Das, Archana,et al."Reconstructing Late Quaternary Palaeo-environmental change from the dryland fluvial landscape of the Southern Kachchh Mainland, western India: Insights from new OSL and sedimentological datasets".GEOLOGICAL JOURNAL 55.10(2020):7041-7056.