Interpretation of Landsat Imagery of a Part of the Son Valley and its Correlation With Bouguer Gravity and Airborne Magnetic Anomaly Data

A belt of volcano-sedimentary formations extending from the south-western margin of the area towards ENE along the Son valley has been traced on the LANDSAT imageries. These formations, which are considered to be the homotaxial equivalents of the 'Bijawar Series' occurring south of the Bundelkhand granite massif, rest on granite gneiss in the central and eastern parts of the area and are overlain towards north and south by the members of the Vindhyan and Gondwana Supergroups respectively. The significant litho-stratigraphic, structural and metamorphic features of the belt of volcano-sedimentary formations suggest that it may be classified as a 'Greenstone belt'.

Probable occurrence of the volcano-sedimentary formations and sub-crustal basic rocks beneath the Vindhyan and Gondwana Formations have been inferred in certain sections based on the interpretation of Bouguer gravity and airborne magnetic anomaly data.