6 th International Conference & Exposition on Petroleum Geophysics “Kolkata 2006” (43) Introduction The Punjab Plains was once considered as to be one of the promising oil bearing regions in India owing to the presence of natural gas in Jawalamukhi, Bahl, Nurpur etc. Though the areas have not yielded commercial hydrocarbons, exploration work is still on. Here the area is once again revisited and restudied with the available sets of new data to bring forward fresh leads to the exploration of the area. The main objective of the study was to delineate the structural elements of the Punjab Plains through the Remote Sensing data and to see how the different trends affects the course of the river and consequently develops to a drainage anomaly. With significant improvement in the resolution of the available digital data combined with the availability of the elevation data the evaluation of morphotectonic units through Geographical Information System (GIS) tends to be more informative and more quantitative. Area of Study & Data used The study area covers the states of Jammu & Kashmir, Himachal Pradesh and Punjab and SOI toposheets number 43, 44, 52, 53 series in the scale of 1:250,000. Seven Landsat TM scenes and seven Landsat ETM data were used for the study. The scenes were mosaiced and processed and geo-referenced with the base map. Different image processing techniques like contrast stretching and spatial enhancement techniques were applied for better visualization of the data. Study of Tectonic Elements of Punjab Plains from Satellite Imagery, Drainage Network and Gravity Anomalies K. K. Saha*, H. D. Dave, D. S. Mitra *Remote Sensing & Geomatics KDMIPE, ONGC E-mail : kal_saha@rediffmail.com Summary The study is aimed to provide an insight to the tectonic elements of a morphologically subdued less deformed area like the Punjab plains. A lineament study is performed to uncover the dominant trend in the region and later it is exemplified how this trend plays an important role in the modification of the course of a river. Several drainage anomalies were marked over the region and a morpho-tectonic study was undertaken to show how the tectonic element helps in the formation of one of the anomaly. The study overall elaborates how the drainage anomalies extracted from the image and from the elevation data act as a structural indicator and document different tectonic events. In the present study, analyses of the terrain were made using a Digital Elevation Model (DEM). Shuttle Radar Topographic Mission (SRTM) provided the elevation data needed to create a seamless DEM of 80% of the world’s landmass at different spatial resolution through the use of synthetic aperture radar (SAR) technology (Mohanty, 2004). The SRTM data used for the present study area was having resolution of 90 m. General geology & tectonics The Punjab Plains is a Proterozoic pericratonic pre-foredeep shelf superimposed by rapid subsidence and sedimentation by Tertiary foredeep molasse. A monoclinal northerly dipping strata is suggested by the Airborne magnetic and ground gravity-magnetic data. The basin is bounded by the Main boundary thrust (MBT) in the north while the Delhi-Sargodha ridge marks the southern margin, the western part is demarcated by the Aravalli ridge. The basinal area of about 30,000 sq km is covered by recent alluvium. The stratigraphy of the Tertiary and Quaternary sediments as given by Lithostratigraphy of Indian petroliferous basins document- I, KDMIPE-ONGC 1993 is as follows: Identification of the Tectonic Elements To delineate the tectonic elements of the area a Lineament analysis was performed followed by mapping of several drainage anomalies which indicates the presence