Structure of the lithosphere along the deep seismic sounding profile: Tien Shan—Pamirs—Karakorum—Himalayas

Beloussov, V. V.; Belyaevsky, N. A.; Борисов, А. А.; Volvovsky, B.S.; Volkovsky, I.S.; Resvoy, D.P.; Tal‐Virsky, B.B.; Khamrabaev, I. Kh.; Kaila, K. L.; Narain, Hari; Marussi, Antonio; Finetti, J.

doi:10.1016/0040-1951(80)90279-6

Cited by 64 publications

(45 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…. These results agree well with previous values obtained within the same area using various methods (Beloussov et al, 1980;Kalla, 1981;Holt & Wallace, 1990, Zhao & Helmberger, 1993. Beneath station KSH we obtained a crustal thickness of 44 km (Group 11 of Table 3; Figure 5).…”

Section: Thicknesssupporting

confidence: 93%

Mapping Crust and Upper Mantle Structure Beneath Southern Eurasia.

Helmberger¹

1995

View full text Add to dashboard Cite

Section: Thicknesssupporting

confidence: 93%

Mapping Crust and Upper Mantle Structure Beneath Southern Eurasia.

Helmberger¹

1995

View full text Add to dashboard Cite

“…Pamir was pieced together from a series of tectonic blocks during the Paleozoic and Mesozoic periods [12,13]. The Cenozoic strong shortening and thickening of Pamir is considered to be a response to the continuous collision and compression between the Indian and Eurasian plates [12][13][14], with a maximum crustal thickness of approximately 70 km [10,15], which approaches the average crustal thickness of Tibet Plateau estimated from seismic wave data [16,17]. The kinematic venation of Pamir is dominated by~N-S shortening and orogen-parallel extrusion flow of material [8,9].…”

Section: Tectonic Settingmentioning

confidence: 99%

Slip Model for the 25 November 2016 Mw 6.6 Aketao Earthquake, Western China, Revealed by Sentinel-1 and ALOS-2 Observations

Wang

Wen

et al. 2017

Remote Sensing

View full text Add to dashboard Cite

Abstract:On 25 November 2016 (UTC 14:24:30), an Mw 6.6 dextral strike-slip earthquake ruptured Aketao county in the northwestern portion of the Kongur Shan extensional system, western China. We extracted surface deformation maps and investigated the distribution of the coseismic slip of the 2016 Aketao earthquake by exploiting the Interferometric Synthetic Aperture Radar data imaged by the Sentinel-1 satellites of the European Space Agency and the ALOS-2 satellite of the Japanese Aerospace Exploration Agency. Assuming the crust of the earth is an elastic half-space homogeneous medium, the best fitting slip model suggests a dip angle of 78 • for the seismogenic fault. The rupture of the 2016 Aketao earthquake may have consisted of two sub-events that occurred in rapid succession within a few seconds, resulting in two large discrete asperities with maximum slip of~0.85 m, which were separated by a~6 km-wide small slip gap. The maximum slip for the sub-event near the epicenter was mainly concentrated at a depth of~10 km and that of the other at a depth of~5 km. The estimated total seismic moment from the optimal slip model is 1.58 × 10 19 N·m, corresponding to an event with a moment magnitude of 6.74. More than 65% of the aftershocks occurred in the areas of increased Coulomb failure stress, in which the stress was estimated to have been increased by at least 0.1 bar. Matching the potential barrier on the fault with the depth distribution of aftershocks implies that friction on the causative fault was heterogeneous, which may play a primary role in controlling the active behavior of the Muji fault.

show abstract

“…Kaila and Narain (1981) analyzed ten earthquakes covering the entire length of the Himalayas and noted that the seismic plane progressively became steeper from about 30 o in Assam to about 70 o in the Pamir area. Deep seismic profile (DSS) has suggested that all the faults in the Pamir and Kashmir region are near vertical (Beloussov et al, 1980). Similarly, Bird and Toksoz (1977) analyzed six earthquakes in the Tibetan region and concluded that the lower-most part was molten and that "The inferred high temperature of the Moho is inconsistent with the crustal thrusting model for the formation of Tibet".…”

Section: Discussionmentioning

confidence: 99%

“…221) stated that "A number of geologic factors seem to cast doubt on the existence of a subduction zone along the Indus-Tsangpo Suture, so do the satellite and terrestrial gravity data". The deep seismic sounding profile (DSS) between Pamir and Kashmir (Beloussov et al, 1980;Kaila and Narain, 1981) evidently proves that there is neither suture at Indus-Tsangpo Suture (ITS) Zone nor any subduction of the Indian plate beneath the Tibetan plate. The Chaman-Ornach-Nal faults are not continuous and splay repeatedly, suggesting progressive younging southward.…”

Section: Discussionmentioning

confidence: 99%