Fig. 1: Topographic map of the study region showing simplified tectonic divisions, distribution of seismic stations, and cross-sections of P receiver functions.
From: Direct structural evidence of Indian continental subduction beneath Myanmar
a Map of the convergent system of the Indian and Asian plates in the Myanmar region. Each seismic station used in this study is shown with a blue triangle. The yellow areas mark the outcrops of Late Cretaceous to Miocene volcanic rocks, and the purple areas mark ophiolites in the IBR. The topographic data are derived from the ETOPO1 database40. The inset shows the location of the study region in the India–Asia collision system. b Cross-sections (from west to east) of stacked P receiver functions from data (Obs) and synthetic (Syn) images. Traces are plotted in a time window between −1 and 15 s with time-zero aligning with the onset of the P-wave. The amplitudes of the traces are normalized by the maximum amplitude of all traces. Station numbers are labeled at the top of the plots for ease of reference. Dashed lines indicate the converted phases from the Moho (blue), the top interface (red), and the bottom interface (black) of a dipping structure recognized by waveform inversion. EHS eastern Himalayan syntaxis, WHS western Himalayan syntaxis, KBF Kabaw fault, MV Monywa volcanoes, SGF Sagaing fault, RRF Red River fault.
