Following the April 25, 2015 Gorkha magnitude 7.8 and the May 12, 2015 magnitude 7.3 earthquakes, a collaborative team from Oregon State University, U.C. Riverside, Stanford University, and the University of Texas at El Paso deployed an NSF RAPID-funded aftershock array (the “NAMASTE” array) of 45 seismic stations for 11 months across the Main Himalayan Thrust (MHT) fault where the large earthquakes occurred. In this proposal, this same collaborative team will analyze the newly collected data set specifically to study the geometry of faults, including the MHT fault, the composition of the crust and upper mantle in the region, the rupture process of this earthquake sequence, and the broader geotectonic setting in the Himalaya and southern Tibet.