Publication Date:
2020-02-12
Description:
Wide-angle reflection and refraction data acquired as part of the URSEIS ’95 geophysical exsperiment across the southern Uralide orogen provide evidence for a 12 to 15-kilometer-thick crustal root, yielding a total crustal thickness of 55 to 58 kilometers. Strong reflections from the Mohorovičić discontinuity (Moho) at relatively small precritical distances suggest that the crust-mantle transition beneath the crustal root is a sharp feature. The derived P- and S-wave velocity models constrain key physical properties of the crust, including the depth of the mafic rocks of the Magnitogorsk volcanic arc and the existence of a lower crustal zone of possible basic rock enrichment beneath the East Uralian zone.
Keywords:
550 - Earth sciences
Type:
info:eu-repo/semantics/article