1997 Edition

Amphitheater valley heads

  • Rhodes W. Fairbridge
Reference work entry
Semicircular valley heads of non-glacial origin are known as amphitheaters or amphitheater valley heads. Glacial valleys of this sort are cirques (q.v.), and Freeman (1925) has called the non-glacial amphitheaters “pseudo-cirques,” but this has not found favor ( Hinds, 1925). The nature of glacial cirque erosion (“plucking,” etc.) is quite different from fluvial action. Some periglacial activity is involved in amphitheater development at high altitudes in the mid- and low latitudes.
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  1. Freeman, O. W., 1925, The origin of the Swimming Woman Canyon, Big Snowy Mountains, Montana, an example of a pseudocirque formed by landslide sapping, J. Geol., 23, 75–79.Google Scholar
  2. Hinds, N. E. A., 1925, Amphitheater valley heads, J. Geol., 33, 816–818.Google Scholar
  3. Lobeck, A. K., 1939, Geomorphology, An Introduction to the Study of Landscapes, New York, McGraw-Hill Book Co., 731pp.Google Scholar


Copyright information

© Reinhold Book Corporation 1968

Authors and Affiliations

  • Rhodes W. Fairbridge

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