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Open AccessArticle

Late Holocene Glacier Dynamics in the Miyar Basin, Lahaul Himalaya, India

Department of Geography, Govt. College Dujana, Haryana 124102, India
Centre for the Study of Regional Development, Jawaharlal Nehru University, New Delhi 110067, India
Department of Geography, Dr. Hari Singh Gour Central University, Sagar 470003, India
Physical Research Laboratory, Ahmedabad 380015, India
Wadia Institute of Himalayan Geology, Dehradun 248001, India
Space Application Centre, Ahmedabad 380015, India
Author to whom correspondence should be addressed.
Academic Editors: Ulrich Kamp and Jesús Martínez Frías
Geosciences 2017, 7(3), 64;
Received: 5 May 2017 / Revised: 23 July 2017 / Accepted: 25 July 2017 / Published: 4 August 2017
(This article belongs to the Special Issue Cryosphere)
Detailed field mapping of glacial and paraglacial landforms and optical dating from these landforms are used to reconstruct the early Holocene glaciation in the semi-arid region of Miyar basin, Lahaul Himalaya. The study identifies three stages of glaciation, of decreasing magnitude and termed, from oldest to youngest, the Miyar stage (MR-I), Khanjar stage (KH-II), and Menthosa advance (M-III). The oldest glacial stage (MR-I) has been established on the basis of detailed geomorphological evidence such as U-shaped valley morphology, trimlines, and truncated spurs. It is speculated to be older than the global Last Glacial Maximum (gLGM) based on the magnitude of ΔELA (Equilibrium-Line Altitude, 606m). No evidence of glacier expansion recorded from the basin correlates with the period of the gLGM. The second stage (KH-II) is well represented by extensive depositional features such as lateral and terminal moraines, drumlins, and lacustrine fills that have been constrained within 10 ± 1 to 6.6 ± 1.0 ka (Optically stimulated luminescence—OSL—ages), dating it to the early Holocene advance following the Younger Dryas cooling event. Exceptionally young glacial records of expansion are limited within a few hundred meters of the present termini of tributary glaciers and correlates with the 18th-century cooling event. Records of this glacial advance, termed the Menthosa advance, are clearly noticed in some tributary valleys. View Full-Text
Keywords: Holocene; glaciation; Lahaul Himalaya; LGM; ELA; OSL Holocene; glaciation; Lahaul Himalaya; LGM; ELA; OSL
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Deswal, S.; Sharma, M.C.; Saini, R.; Chand, P.; Juyal, N.; Singh, I.; Srivastava, P.; Ajai; Bahuguna, I. Late Holocene Glacier Dynamics in the Miyar Basin, Lahaul Himalaya, India. Geosciences 2017, 7, 64.

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