EULER DECONVOLUTION TO GRAVIMETRIC DATA OF THE CENTRAL SEGMENT OF THE CARIBBEAN PLATE SOUTHERN EDGE

Abstract

Applying the Euler deconvolution to gravimetric data in a geographic window covering from the Venezuelan Basin in the north to the Venezuelan Central Plains in the south enables the general characterization of the layers with maximum density contrast in the region’s subsurface. The operator was applied to the Bouguer anomaly, making possible the identification of an intracrustal layer in the subsurface of the Venezuelan central states and part of Anzoátegui State, and the Moho discontinuity to the east, a combination deduced from the data set spectral composition. The results show a division of domains in the Leeward Antilles, spectral continuity in the response of the North-Central Coastal Platform and the Serranía del Litoral, with lateral variations associated to the region’s outcropping oblique fault system. The section to the south of the Frontal Thrust reveals a vast and irregular contrast layer in the subsurface of the Guárico Sub-Basin with NNW preferential orientation. Deconvolution on the Regional Anomaly reflects a boundary on the same geographical border, which was identified with the Bouguer Anomaly, and confirms the domain division in the Leeward Antilles, so as the tectonic importance of the outcropping oblique fault system in the Serranía del Litoral and the Serranía del Interior.