Integrated geophysical approach for delineating the structural features and sulphide rich zones for uranium exploration in Umra area, Udaipur District, Rajasthan - an aid for uranium exploration

Integrated interpretation of geophysical anomalies is a better tool for delineating favourable structures (faults/ fractures) and conductive zones in uranium exploration. The present study deals with results of Magnetic and Induced polarization (IP) surveys covering an area of 10 sq km in Umra area, Udaipur District, Rajasthan and their integrated interpretation for uranium exploration. The study area forms a part of the Aravalli Fold Belt (AFB) comprising of fold belts of Palaeo and Mesoproterozoic age. Uranium mineralisation in Umra is associated with low grade meta-sediments of Palaeo Proterozoic Aravalli Supergroup comprising calcareous, arenaceous, argillaceous and carbonaceous sediments deposited in fault bound troughs over the Archaean gneissic basement