Amphitheater valley heads
Reference work entry
- 55 Downloads
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.
- 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
- Hinds, N. E. A., 1925, Amphitheater valley heads, J. Geol., 33, 816–818.Google Scholar
- Lobeck, A. K., 1939, Geomorphology, An Introduction to the Study of Landscapes, New York, McGraw-Hill Book Co., 731pp.Google Scholar
© Reinhold Book Corporation 1968