Lithosphere-Scale Seismic Image of the Southern Urals from Explosion-Source Reflection Profiling

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Science  11 Oct 1996:
Vol. 274, Issue 5285, pp. 226-228
DOI: 10.1126/science.274.5285.226


Explosive-source deep seismic reflection data from the southern Ural Mountains of central Russia provided a lithosphere-scale image of the central Eurasian plate that reveals deep reflections (35 to 45 seconds in travel time; ∼130 to 170 kilometers deep) from the mantle. The data display laterally variable reflectivity at the base of the crust that deepens beneath the central part of the profile, documenting a crustal thickness of ∼55 to 60 kilometers beneath the axis of the orogen. These data provide an image of the structure of the crust and underlying mantle lithosphere in a preserved collisional orogen, perhaps to the base of the lithosphere.