oa Structural Information Inferred from Gravity Data in South-Central Georgia

The purpose of this paper is to provide a structural interpretation based on the analysis of the gravity field over a study area located in South – Central Georgia, covering a potentially interesting zone in terms of hydrocarbon accumulations. Public Bouguer corrected data was obtained online from The International Gravimetric Bureau. Several processing techniques were applied to the raw Bouguer anomaly (upward continuation, horizontal and vertical derivatives, Gaussian filtering, etc.), in order to extract all possible structural information. Frequency domain processing allowed precise depth analysis of the gravity sources; thus, features like faults could be tracked in-depth and their area of influence could be delimited.Good correlation was found between the filtered maps and the large-scale tectonic features of the area, especially at the junction of the Achara-Trialet orogenic belt. The detailed interpretation provides more insights to the small-scale tectonic features, revealing faults located within the basement and / or the sedimentary formations - different blocks and their relative positions were delimited. The detailed image was also confronted with the geologic map of the area and good correlation was found between them.