Abstract

Low velocity layer modelling is an integrated and vital part of seismic data processing and interpretation as it influences seismic reflection travel time. In this article, we tried to establish the nature of LVL near Naga thrust area of Upper Assam Basin. LVL survey data of different areas viz. Amguri, Sonari-Sapekhati-Namrup-Borhat and Jorajan are used to study the LVL nature (fig-1). In each area, we generated the elevation and velocity contour maps and tried to correlate between them. In most of the areas, we found the presence of three layers whereas some place exhibited the signature of a fourth layer. The areas which are chosen for the purpose of this study are quite far from each other which made it challenging to correlate between them at the initial phase of the study.