Study of gravity signature across the floating basement of Bundelkhand granite using 3D-Euler deconvolution, source edge detection technique and various gravity gradient analyses

Bundelkhand granitic massif (BGM) encompasses various granitic plutonism in early Proterozoic age which contains granitic sample of massif within the age 2560 ± 106 m.y. The Bundelkhand granitic massif is formed by various granitic upward intrusions. The gravity data suggest that it exhibits low gravity over the higher-gravity zone inside the Bundelkhand massif. It is suggested that due to the tectonic activity gravity variation takes place and the Bundelkhand granitic massif formed. Younger intrusive dykes, metasedimentary and gneissic rocks, older enclaves of metabasic, are supposed to be present in the zone. The present study has been carried the interpretation of gravity signature using various gravity gradient analyses of Bouguer gravity data in the Bundelkhand granitic belt which is one of the floating basement areas. The various gravity derivatives are analyzed, and it suggests about the source edge locations and the delineation pattern. Three-dimensional Euler deconvolution analysis has been carried out using specified structural index (SI) and different window sizes (WS). Apart from this, tilt derivative (Tilt), horizontal tilt derivative (TDX), analytical signal (ASA), total horizontal derivatives (THDR) and source edge detection (SED) have been studied. These various derived results are superimposed with one another map, and the results are correlated for understanding various lineament pattern including different strike and dip direction and different source depth locations. The integrated results look well correlated and provide value addition to get some geological consequences and better understanding the study area.