USNC-IGY Antarctic Glaciological Data, Report Number 2: Field Work 1958-59

• Main Author: Anderson, V.H.
• Format: Report
• Language: English
• Published: The Ohio State University Research Foundation 1960
• Subjects: Rock specimens > Marie Byrd Land; Antarctica; Volcanic rocks > Mount Takahe; Antarctic; Byrd; Ewing; Marie Byrd Land; Mount Takahe; Pacific; Takahe; The Sentinel; Antarc*
• Online Access: http://hdl.handle.net/1811/51922

Submitted to the U.S. National Committee for the IGY, National Academy of Sciences, in partial fulfillment of IGY Project Number 4.10 - NSF Grant No. Y/4.10/285. Rock specimens from newly-discovered mountain masses and nunataks in Marie Byrd Land, Antarctica, are described. Four chemical analyses of volcanic rocks from Mt. Takahe are presented. The volcanic specimens, identified as oligoclase andesite, reflect a marginal-continental occurrence, typical of the Circum-Pacific volcanoes. Petrographic, lithologic, and structural evidence suggest that the Sentinel Mountains structure can be extended for about 200 miles south-westward to Mt. Johns and Mt. Ewing. Detailed petrographic descriptions of 80 thin sections are presented. National Science Foundation Grant No. Y/4.10/285.