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Science 11 October 1996:
Vol. 274. no. 5285, pp. 224 - 226
DOI: 10.1126/science.274.5285.224
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Reports

Preserved Collisional Crustal Structure of the Southern Urals Revealed by Vibroseis Profiling

H. P. Echtler, M. Stiller, F. Steinhoff, C. Krawczyk, A. Suleimanov, V. Spiridonov, J. H. Knapp, Y. Menshikov, J. Alvarez-Marrón, N. Yunusov

The vibroseis reflection profiling component of the URSEIS '95 experiment provides a high-resolution crustal-scale image of the unextended southern Uralide orogen. A marked lateral and vertical variation of reflectivity throughout the entire crust differentiates the former margin of the East European craton to the west from accreted terranes to the east. Between these regions is a less reflective zone corresponding to the Magnitogorsk volcanic arc and the crustal root zone. Continuous reflections and reflective domains that correlate at the surface with major tectonic features define a bivergent orogen in which the Paleozoic collisional structure has been largely preserved.

H. P. Echtler, M. Stiller, F. Steinhoff, C. Krawczyk, GeoForschungsZentrum, D-14473 Potsdam, Germany.
A. Suleimanov and V. Spiridonov, Spetsgeofisika, Moscow, 107140 Russia.
J. H. Knapp, Institute for the Study of the Continents, Cornell University, Ithaca, NY 14853, USA.
Y. Menshikov, Bazhenov Geophysical Expedition, Scheelite, 624051 Russia.
J. Alvarez-Marrón, Instituto de Ciencias de la Tierra, Consejo Superior de Investigaciones Cientificas-Barcelona, 08028 Spain.
N. Yunusov, Bashneftegeofizika, Ufa, 450000 Russia.

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
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