Shallow structure of the Yadong-Gulu rift, southern Tibet, from refraction analysis of Project INDEPTH common midpoint data

Article Abstract:

A refraction analysis in southern Tibet, which was conducted by the International Deep Profiling of Tibet and the Himalaya (INDEPTH), revealed that the region's Yadong-Gulu rift may have shallow structure. INDEPTH project personnels have found the Neogene-Quarternary fill of these shallow basins to only measure to a few hundred meters in thickness along most of the rift. Furthermore, the footwall of the northern Yangdu-Gulu rift is observed to be strongly rotated.

Rifts (Geology)

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Yadong cross structure and South Tibetan Detachment in the east central Himalaya (89 degrees-90 degrees E)

Article Abstract:

The Yadong cross structure (YCS) found in the east central Himalaya is the largest across-strike discontinuity in the geologic structure and topography of the High Himalaya between the Himalayan syntaxes. It is a surface manifestation of a lateral ramp in the Main Boundary Thrust, which is measured at about 10 km in height facing west-northwest. Furthermore, the South Tibetan Detachment System offsets the YCS at 70 km across.

Asia

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Crustal structure of the Himalayan orogen at 90 degrees east longitude from project INDEPTH deep reflection profiles

Article Abstract:

International Deep Profiling of Tibet and the Himalaya (INDEPTH) project deep seismic reflection profiles taken from the southernmost part of Tibet are examined. It was found that, at depths of around 45 km, the Indian lithosphore is underthrusting the Himalaya in a gently north dipping decollement. Moreover, the Indian mantle lid underplates approximately the southern area of the Tibetan plateau.

Analysis, Usage, Seismic reflection method, Seismic reflection surveying

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