干旱区生态环境知识资源中心(Arid): Holocene landscape dynamics in the Ghaggar-Hakra palaeochannel region at the northern edge of the Thar Desert, northwest India

Arid

DOI	10.1016/j.quaint.2017.10.012
	Holocene landscape dynamics in the Ghaggar-Hakra palaeochannel region at the northern edge of the Thar Desert, northwest India
	Durcan, Julie A.1; Thomas, David S. G.1; Gupta, Sanjeev 2; Pawar, Vikas 3; Singh, Ravindra N.4; Petrie, Cameron A.5
通讯作者	Durcan, Julie A.
会议名称	EGU Session on GM6.2/SSS3.10 on Geoarchaeology - Human Adaptation to Landscape Changes, Landscape Resilience to Human Impact and Integrating Palaeoevnironmental and Archaeological Records
会议日期	2016
会议地点	Vienna, AUSTRIA
英文摘要	Precession-forced change in insolation has driven de-intensification of the Asian Monsoon systems during the Holocene. Set against this backdrop of a weakening monsoon, Indus Civilisation populations occupied a number of urban settlements on the Ghaggar-Hakra plains during the mid-Holocene from 4.5 ka until they were abandoned by around 3.9 ka. Regional climatic variability has long been cited as a potential factor in the transformation of Indus society, however there remain substantial gaps in the chronological framework for regional climatic and environmental change at the northern margin of the Thar Desert. This makes establishing a link between climate, environment and society challenging. This paper presents 24 optically stimulated luminescence ages from a mixture of 11 fluvial and aeolian sedimentological sites on the Ghaggar-Hakra floodplain/interfluve, an area which was apparently densely populated during the Indus urban phase and subsequently. These ages identify fluvial deposition which mostly pre-dates 5 ka, although fluvial deposits are detected in the Ghaggar palaeochannel at 3.8 ka and 3.0 ka, post-dating the decline of urbanism. Aeolian accumulation phases occur around 9 ka, 6.5 ka, 2.8 ka and 1.7 ka. There is no clear link to a 4.2 ka abrupt climate event, nor is there a simple switch between dominant fluvial deposition and aeolian accumulation, and instead the OSL ages reported present a view of a highly dynamic geomorphic system during the Holocene. The decline of Indus urbanism was not spatially or temporally instantaneous, and this paper suggests that the same can be said for the geomorphic response of the northern Thar to regional climate change. (C) 2017 Elsevier Ltd and INQUA. All rights reserved.
英文关键词	Indus Civilisation Fluvial Aeolian OSL dating Palaeoenvironment Drylands Northern Thar Desert
来源出版物	QUATERNARY INTERNATIONAL
ISSN	1040-6182
EISSN	1873-4553
出版年	2019
卷号	501
页码	317-327
出版者	PERGAMON-ELSEVIER SCIENCE LTD
类型	Article; Proceedings Paper
语种	英语
国家	England;India
开放获取类型	Green Submitted
收录类别	CPCI-S
WOS记录号	WOS:000460735100005
WOS关键词	LUMINESCENCE CHRONOLOGY ; SUMMER MONSOON ; SARASWATI RIVER ; CLIMATE-CHANGE ; VARIABLE ENVIRONMENTS ; SOUTHWEST MONSOON ; SABARMATI RIVER ; ABRUPT CHANGES ; ASIAN MONSOON ; DOSE-RATE
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	会议论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/308346
作者单位	1.Univ Oxford, Sch Geog & Environm, Oxford, England; 2.Imperial Coll London, Dept Earth Sci & Engn, London, England; 3.Maharshi Dayanand Univ, Dept Hist, Rohtak, Haryana, India; 4.Banaras Hindu Univ, Dept AIHC & Archaeol, Varanasi, Uttar Pradesh, India; 5.Univ Cambridge, Div Archaeol, Cambridge, England
推荐引用方式 GB/T 7714	Durcan, Julie A.,Thomas, David S. G.,Gupta, Sanjeev,et al. Holocene landscape dynamics in the Ghaggar-Hakra palaeochannel region at the northern edge of the Thar Desert, northwest India[C]:PERGAMON-ELSEVIER SCIENCE LTD,2019:317-327.