GLACIAL GEOLOGY OF THE MOUNT GRAN AREA, SOUTHERN VICTORIA LAND, ANTARCTICA

Abstract

Research Article| October 01, 1964 GLACIAL GEOLOGY OF THE MOUNT GRAN AREA, SOUTHERN VICTORIA LAND, ANTARCTICA PARKER E CALKIN PARKER E CALKIN INSTITUTE OF POLAR STUDIES, OHIO STATE UNIVERSITY, COLUMBUS, OHIO (PRESENT ADDRESS: SCIENCE DEPT., STATE UNIVERSITY COLLEGE, BUFFALO, N. Y.) Search for other works by this author on: GSW Google Scholar GSA Bulletin (1964) 75 (10): 1031–1036. https://doi.org/10.1130/0016-7606(1964)75[1031:GGOTMG]2.0.CO;2 Article history received: 04 Mar 1964 first online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation PARKER E CALKIN; GLACIAL GEOLOGY OF THE MOUNT GRAN AREA, SOUTHERN VICTORIA LAND, ANTARCTICA. GSA Bulletin 1964;; 75 (10): 1031–1036. doi: https://doi.org/10.1130/0016-7606(1964)75[1031:GGOTMG]2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract The Mount Gran area, encompassing Mount Gran and the ice-free Alatna Valley adjoining to the north, is located 77° S. and 161° E. in the rugged, glaciated mountains of southern Victoria Land, Antarctica.At least two major glaciations are represented in this area. During the first and most extensive glaciation recognized, the A Glaciation, ice came from the inland ice plateau in the west, hollowed out the western end of Alatna Valley, and probably passed through the area to the Ross Sea in the east.During the second or B Glaciation, ice probably invaded the Mount Gran area from the coastal area in the east. This origin is suggested by the orientation of roche moutonnées and end moraines in Alatna Valley and by the occurrence of erratic boulders of pink granite and pink gneiss on the floor of Alatna Valley and lower elevations of Mount Gran. Such an invasion from the coast may have occurred when sea level was low and there was about 1200 m of ice in the McMurdo Sound-Ross Sea area.Ablation phenomena immediately adjacent to the glacier fronts suggest recent recession in the Mount Gran area. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.