Structural trends in deccan trap area nw of Poona: A study based on landsat-1 imagery interpretation

Geological interpretation of the area northwes tof Poona was carried out with the help of Multiband LANDSAT-1 imagery. An area of about 2800 sq. km which is exclusively covered by the Deccan Trap basalts was selected to study the lineament pattern. The interpretation was mainly carried out on a scale of 1:270,000. It has been observed that N50°E and mean N-S are the most prominent linear directions in the area. Field evidences have shown that these directions represent the fracture zones which have controlled linear valleys, elongated ridges and linearly arranged truncated spurs. The mean N-S trend observed in the area can be interpreted as a trend parallel to the basement (Dharwar) trend while the N50°E trend can be explained as a manifestation of Satpura trend.