Magnetic Features On The Cretacic Island Arc Complex In Central-East Cuba

The structural framework of Central-East Cuba is clearly displayed in magnetic anomaly maps. A strongly positive NW-SE trending zone, at the central portion of the area, seems to correspond to crustal thinning and/or large volumes of basic rocks. Intermediate intensity areas are associated with sedimentary or sedimentary and felsic volcanic sequences, respectively of the Bahamas platform and Magmatic Arc. Low intensity areas correspond to deeper sedimentary basins and ophiolitic complexes. Despite its high magnetic susceptibilities, these sequences are probably tectonically overturned with reversal of the magnetization vectors.