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DOI	10.1016/j.palaeo.2019.109505
	Optical chronology and climatic implication of glacial advances from the southern Ladakh Range; NW Himalaya; India
	Shukla A.D.; Sharma S.; Rana N.; Bisht P.; Juyal N.
发表日期	2020
ISSN	0031-0182
卷号	539
英文摘要	Morphological, sedimentological, and chronological evidence suggests the preservation of three glacial advances of decreasing magnitude in the Puche valley (near Leh), southern Ladakh Ranges. The oldest moraine of Puche Glacier Advance-1 (PGA-1) is optically dated to the early Marine Isotopic Stage (MIS)-2 (31.5 ± 3.3 ka) that persisted until around the global Last Glacial Maxima (LGM) (22.7 ± 1.6 ka). The PGA-2 is optically dated to the post LGM (14.4 ± 1.0 ka) and perhaps was triggered by meltwater pulse (1a?) cooling. The youngest PGA-3 remains undated and could be of Holocene age. The Optically Stimulated Luminescence (OSL) ages suggest a greater role of westerlies in driving the glacier advances during the MIS-2 in the southern Ladakh Ranges and are at variance with the previous suggestions that recommended monsoon driven glacier advances. The OSL ages compared to the previously obtained 10Be surface exposure ages are younger by a magnitude. The study explores probable causes for the variance in two chronologies and suggests employing multiple dating methods to minimize the uncertainty both in terms of age and climatic interpretation. © 2019 Elsevier B.V.
英文关键词	Last Glacial Maximum; Luminescence dating; Mid-latitude westerlies; Paleoglaciation
语种	英语
scopus关键词	chronology; cooling; glaciation; glacier advance; Holocene; Last Glacial Maximum; luminescence; luminescence dating; marine isotope stage; moraine; Himalayas; Ladakh Himalayas
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150646
作者单位	Physical Research Laboratory, -380009, Ahmedabad, India; Dept. of Earth and Environmental Science, IISER-Mohali, -140306, Mohali, India; National Center for Seismology, Ministry of Earth Sciences, -110003, New Delhi, India; Wadia Institute of Himalayan Geology, -248001, Dehradun, India
推荐引用方式 GB/T 7714	Shukla A.D.,Sharma S.,Rana N.,et al. Optical chronology and climatic implication of glacial advances from the southern Ladakh Range; NW Himalaya; India[J],2020,539.
APA	Shukla A.D.,Sharma S.,Rana N.,Bisht P.,&Juyal N..(2020).Optical chronology and climatic implication of glacial advances from the southern Ladakh Range; NW Himalaya; India.Palaeogeography, Palaeoclimatology, Palaeoecology,539.
MLA	Shukla A.D.,et al."Optical chronology and climatic implication of glacial advances from the southern Ladakh Range; NW Himalaya; India".Palaeogeography, Palaeoclimatology, Palaeoecology 539(2020).