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17 DOI: 10.37398/JSR.2021.650103 Abstract: Lamproites are mantle-derived ultramafic rocks and primary source rocks for hosting diamond apart from kimberlites. The present study area, Ramadugu lies in the North-Eastern part of Dharwar craton, along the NE margin of Cuddapah basin. These Lamproites are tube or pipe like structures and emplaced with a NW–SE trend. LISS-IV imageries were utilized to demarcate the drainage pattern, lineaments and hydro-geomorphology of the area. Ground Magnetic surveys were conducted using a Proton Precession Magnetometer (PPM) to delineate the Ramadugu Lamproite body. The magnetic anomaly maps were based on about 800 observation points along nine profiles of 500 m in length. The observation interval was 5m. The results of the present study have helped in a better understanding of the lineaments and the geological litho-units associated with the occurrence and emplacement of the Lamproite body in Ramadugu, Cuddapaha Basin, Andhra Pradesh and surrounding regions, where there is an occurrence of several Lamproites.

Application of Magnetic and Remote Sensing Methods to Delineate the Ramadugu Lamproite in North-Eastern Dharwar Craton, India