Upper Crustal Features as Seen from near Vertical and Wide Angle Reflections along Thuadhara-Sindad DSS Profile in Central India

Trace normalized record sections of single fold seismic data, in Central India showed several reflections of large amplitude at upper crustal depth. Synthetic seismogram modeling of these reflections, reveal that they have originated from a combination of several alternating high-tow velocity layers. On a comparison of this model with other models available worldwide, it is felt that while some of these layers may be associated with the presence of fluids, the majority should be due to lateral variations in the near surface structures. However, the first arrival refraction and wide-angle reflection data do not show a similar structure even though, a prominent upper crustal low velocity laycr could be identified.