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Gravity, Deformation and the Earth's Crust, as Studied by Centrifuged Models [Book Review]

Anderson, Don L. (1967) Gravity, Deformation and the Earth's Crust, as Studied by Centrifuged Models [Book Review]. Science, 158 (3808). p. 1561. ISSN 0036-8075. http://resolver.caltech.edu/CaltechAUTHORS:20141023-153425099

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Abstract

This is a delightful and timely little book that cannot help stimulating a wide range of earth scientists. The author, who is a leader in the field of model simulation of tectonic phenomena, uses a large-capacity centrifuge to duplicate in a scale model the effects of gravity in the earth. By "spinning up" appropriately scaled models which consist initially of flat-lying but unstably stratified layers, he is able to study the evolution of salt domes, batholiths, the rise of magma, and the sinking of heavy masses. In the process, he generates many secondary effects such as buckling, rifting, overthrusting, rim synclines, doming, transform faulting, and many more that are remarkably similar to geologic phenomena. The blow recently dealt to vertical tectonics by ocean floor spreading could tend to make one forget the important role of gravity and buoyancy in worldwide tectonics. Ramberg stresses the importance of heterogeneous convection, where melting or other phase changes, rather than thermal expansion, provide the buoyancy necessary to initiate the motion. The reviewer agrees with Ramberg that the density reduction caused by partial melting in the low-velocity zone of the upper mantle has profound tectonic implications.


Item Type:Article
Related URLs:
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http://dx.doi.org/10.1126/science.158.3808.1561-aDOIArticle
http://www.sciencemag.org/content/158/3808/1561.2.citationPublisherArticle
http://www.jstor.org/stable/1723132JSTORArticle
Additional Information:© 1967 American Association for the Advancement of Science. Book review of: Gravity, Deformation and the Earth's Crust, as Studied by Centrifuged Models by Hans Ramberg. Academic Press, New York, 1967. 224 pp., illus.
Record Number:CaltechAUTHORS:20141023-153425099
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20141023-153425099
Official Citation:Studies in Tectonics Gravity, Deformation and the Earth's Crust, as Studied by Centrifuged Models by Hans Ramberg Review by: Don L. Anderson Science, New Series, Vol. 158, No. 3808 (Dec. 22, 1967), p. 1561 Published by: American Association for the Advancement of Science Article Stable URL: http://www.jstor.org/stable/1723132
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:50757
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:24 Oct 2014 18:04
Last Modified:24 Oct 2014 18:04

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