Aerial view to the east of north escarpment, Fosdick Mountains. Mount Bitgood is in the near field, Mount Colombo middle distance, and Mount Perkins is the peak at the horizon.
Migmatite at Maigetter Peak

The Fosdick Mountains (76°32′S 144°45′W / 76.533°S 144.750°W / -76.533; -144.750) are an east–west trending mountain range with marked serrate outlines, standing along the south side of Balchen Glacier at the head of Block Bay, in the Ford Ranges of Marie Byrd Land, Antarctica. They were discovered by the Byrd Antarctic Expedition in 1929, and named by Richard E. Byrd for Raymond B. Fosdick, who became president of the Rockefeller Foundation.[1]

Glaciers and peaks

Geology and geography

The dominant topography is tall, steep-sided ridges, trending north-south, with peak elevations spanning 1000 to 1200 m.[2] The range consists of the Fosdick Metamorphic Rocks[2] of migmatite gneiss and granite. Metamorphism occurred in the middle of the Cretaceous period.[3] Mount Perkins is a Pleistocene volcano within the range.[4][5]

Further reading

References

  1. ↑ "Fosdick Mountains". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved 2 April 2012.
  2. 1 2 Wade, F. A., C. A. Cathey, and J. B. Oldham (1977), Reconnaissance geologic map of the Guest Peninsula quadrangle, Marie Byrd Land, Antarctica, Map A-7, U. S. Antarctic Research Program, Reston, VA.
  3. ↑ Richard, S. M.; Smith, C. H.; Kimbrough, D. L.; Fitzgerald, P. G.; Luyendyk, B. P.; McWilliams, M. O. (1994). "Cooling history of the northern Ford Ranges, Marie Byrd Land, West Antarctica". Tectonics. 13 (4): 837–857. Bibcode:1994Tecto..13..837R. doi:10.1029/93tc03322. ISSN 0278-7407.
  4. ↑ Siddoway, C., S. Richard, C. M. Fanning, and B. P. Luyendyk. 2004. "Origin and emplacement mechanisms for a middle Cretaceous gneiss dome, Fosdick Mountains, West Antarctica (Chapter 16)." In Gneiss domes in orogeny, edited by D. L. Whitney, C. T. Teyssier and C. Siddoway, 267-294. Geological Society of America Special Paper 380.
  5. ↑ Luyendyk, B. P., S. M. Richard, C. H. Smith, and D. L. Kimbrough (1992), Geological and geophysical investigations in the northern Ford Ranges, Marie Byrd Land, West Antarctica, in Recent Progress in Antarctic Earth Science: Proceedings of the 6th Symposium on Antarctic Earth Science, Saitama, Japan, 1991, edited by Y. Yoshida, K. Kaminuma and K. Shiraishi, pp. 279-288, Terra Pub., Tokyo, Japan.

Public Domain This article incorporates public domain material from "Fosdick Mountains". Geographic Names Information System. United States Geological Survey.


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.