Moscow University Geology Bulletin

, Volume 69, Issue 5, pp 365–374 | Cite as

Application of the homogeneous function and modeling methods for reconstruction of a Tibetan geological section from a travel-time inversion

  • V. B. PiipEmail author
  • E. A. Efimova


New structures were revealed in Central Tibet after reinterpretation of the first arrivals of refracted seismic waves along the INDEPTH III profile. The method that was used for travel-time inversion is the numerical generalization of the Herglotz-Wiechert formula for the case of a 2D inhomogeneous medium (the homogeneous-function method). The new section shows that the Bangong-Nujiang Suture (BNS) is a contact in the upper crust, while its continuation in the middle crust is a listric thrust; at the top of the lower crust, which has risen to a 32-km depth in the northern part of the section, this thrust become gentler. Below the middle crust top, a layer with a lower velocity of seismic waves is found. The middle crust is deformed and forms oblique southward listric thrusts. In the upper crust south of the BNS, higher-velocity zones (probable zones of magmatism) are distinguished. North of the BNS, undisturbed outlines of the structures are observed.


deep seismic sounding inverse problems modeling method homogeneous-function method Tibet 


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© Allerton Press, Inc. 2014

Authors and Affiliations

  1. 1.Department of GeologyMoscow State UniversityMoscowRussia

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