Radiometric age of the snout ice of Nehnar glacier

Bhandari, N. ; Bhatt, D. I. ; Nijampurkar, V. N. ; Singh, R. K. ; Srivatsava, D. ; Vohra, C. P. (1981) Radiometric age of the snout ice of Nehnar glacier Proceedings of the Indian Academy of Sciences - Earth and Planetary Sciences, 90 (3). pp. 227-235. ISSN 0253-4126

PDF - Publisher Version

Official URL:

Related URL:


The surface ice taken from the snout of the Nehnar glacier (Kashmir) in western Himalaya has been dated using radioisotopes 32Si and 210Pb to be 500 years. Based on the age distribution of ice and the expected activity of 32Si in the fallout, the average rate of glacier movement over a period of the last few centuries is estimated to be about 6 m/yr. The data obtained on 32Si and 210Pb activities in the surface ice samples in the ablation zone support our previous observation about the existence of five zones of alternately high and low activity of 210Pb, which probably is a consequence of complex dynamics of Nehnar glacier. The vertical profile of 210Pb activity in an ice core correlates directly with the total beta activity. This radioactive horizon at an altitude of 4140 m appears to be located at a depth of 10-12m, which is lower compared to the 2-3 m observed earlier at an altitude of 4150 m.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:Snout Ice; Radiometric Age; Ablation Zone
ID Code:88923
Deposited On:30 Mar 2012 07:14
Last Modified:19 May 2016 03:38

Repository Staff Only: item control page