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Science 11 October 1968:
Vol. 162. no. 3850, pp. 258 - 261
DOI: 10.1126/science.162.3850.258
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Articles

Structural Pattern in Central Uplifts of Cryptoexplosion Structures as Typified by Sierra Madera

H. G. Wilshire 1 and Keith A. Howard 1

1 U.S. Geological Survey, Menlo Park, California 94025

The pattern of deformation in central uplifts of Sierra Madera and other well-known cryptoexplosion structures indicates that inward as well as upward movement of strata formed the uplifts. This kind of movement is incompatible with structures not of impact origin with which they have been compared. The structural style of cryptoexplosion structures, together with features that suggest shock deformation, supports the belief that they are the eroded roots of impact craters.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Shatter Cones at Sierra Madera, Texas.
K. A. Howard, K. A. Howard, and T. W. Offield (1968)
Science 162, 261-265
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Science. ISSN 0036-8075 (print), 1095-9203 (online)