The model does not support continental underthrusting of the Indian plate underneath Tibet in the manner envisaged by Powell and Conaghan. The upper crust in the High Himalayas region appears to have higher than normal density, as compared to the crust south of the Indus-Tsangpo Suture. The model presented suggests that the density contrast between the crustal root beneath the High Himalaya-Tibet region and the Moho is of the order of 0.32. The geometry and gravity eld of the Himalaya and Ganges plain provide a quantitative basis for estimating the exure and elastic thickness of the Indian plate (Parsons and Molnar 1976 Molnar et al 1977 Lyon-Caen and Molnar 1983, 1985 Karner and Watts 1983 Watts 2001). The Himalaya foreland forms a high T e (40 < T e < 100 km) rigid block with a well defined edge, as shown by the localisation of faulting and deformation along its northern margin.

in the Himalaya-Tibetan region of Nepal has been used to restrict Moho depth along the profile. We have verified these inferences of spatial variations using a 2-dimensional, non-spectral, interative flexure and gravity anomaly modelling technique. Explosion Seismology data obtained by Hirn et al. The profile passes through the Ganga basin, Lower, Higher and Tethys Himalayas and finishes near the Indus-Tsangpo Suture. The gravity field in the Nepalese Himalayas-Tsangpo region has been analysed along a profile starting from near Giridih (24☁0'N, 86☂0☎) and continuing over the Indian peninsular shield to near Tingri (28★0'N, 87☎) close to the Tsangpo Suture. We estimated the position of the peripheral bulge and the depression (foredeep) associated with the tectonic load of the Himalaya using continuous elastic plate models (e.g., Watts et al., 2013) (.

Himalaya flexture watts