Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

Ravinder Kumar Chaujar ¹

Affiliations
1 Wadia Institute of Himalayan Geology, Dehra Dun 248 001, IN

Abstract

In the present paper an attempt has been made to study different cycles of advance and retreat of the Chhota Shigri Glacier, located in Lahaul district of Himachal Pradesht on the basis of various loops of lateral and terminal moraines in the Inactive Zone. From the shape and size of five morainic loops it would appear that the first three stages of glacial activity in the region were quite prominent and stable as compared to the last two. The energy of transportation and deposition of material was maximum during stage I of the glacier advance, as indicated by the presence of the rest of the morainic loops within the lateral and terminal moraines, and on the ground moraines of the loop of stage I of the glacier advance. After the development of these loops no major glacial activity has occurred.

Keywords

Glacier, Chhota Shigri, Lahaul, Himachal Pradesh.

Full Text

     

Ravinder Kumar Chaujar ¹

Affiliations
1 Wadia Institute of Himalayan Geology, Dehra Dun 248001, IN

Abstract

Streamlined and superimposed streamlined landforms in the inactive zone formed by first deglaciation activity are fiutes which are characterised by low relief and very elongate form reflected by cigar shaped image. They are mostly present in clusters in the zone between the end moraines and second stage of glacier advance and retreat. It is suggested that the formation of these flutes is related to pre-existing forms of ground moraine which have been heavily dissected by preglacial melt water streams before reglaciation and deposition of upper till. Superimposed streamlined landforms suggest that the glacial ice, which formed them had insufficient power and energy to destroy tbe existing landforms, but could only modify them.

Keywords

Chhota Shigri Glacier, End Moraines, Drumlins and Flutes, Lahaul, Himalaya.

Full Text