Fig. 1: Topographic map, seismic profile location in Tibet and geologic setting. | Nature Communications

Fig. 1: Topographic map, seismic profile location in Tibet and geologic setting.

From: No mafic layer in 80 km thick Tibetan crust

Fig. 1

a Topographic map with major tectonic units and sutures. Black rectangles show locations of maps in b and c. b. Location of seismic refraction/wide-angle reflection profile across LT and TH. Blue dots: seismometer locations; red stars: seismic source locations; circles: location and hypocentre depth for all deep (>50 km depth) earthquakes within the map from 1990 to 2017 (ISC, http://www.isc.ac.uk/). c Major geological structures62,63 and areal coverage of three series of volcanism48,49,50,64. Locations of proposed underthrusted Indian Plate from receiver functions (“crustal doubling”) are marked12,13,15,16,17. Earlier seismic refraction/wide-angle reflection profiles are shown by stippled lines, and thick purple lines indicate ray coverage for Moho reflections. Insert shows location of study area. QB Qaidam Basin, SB Sichuan Basin, SGT Songpan-Ganzi Terrane, QT Qiangtang Terrane, LT Lhasa Terrane, HB Himalayan Block, TH Tethyan Himalaya, BN Bangong-Nujiang suture, GCF Gyaring Co fault, JS Jinshajiang suture, LMF Luobadui–Milashan Fault, IYS Indus–Yarlung suture, STD South Tibet Detachment, MBT Main boundary thrust, SNMZ Shiquan River–Nam Tso Mélange Zone, TYR Tangra YumCo rift, PXR Pumqu-Xianza rift, YGR Yadong-Gulu rift.

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