STRATIGRAPHY AND DEPOSITIONAL HISTORY OF THE HAITISES FORMATION, SOUTH EAST DOMINICAN REPUBLIC

The surface geology of the province of La Romana, Dominican Republic is dominated by carbonates and they have not been studied in detail. The Haitises Formation, present in this area, is Pliocene to late Pleistocene in age, and it is composed of bioclastic and reef carbonate deposits (Braga et al., 2010). The purpose of this investigation was to study the stratigraphy and depositional history of the Haitises Formation in the region of La Romana. Thirteen thin sections were analyzed for this investigation and Standard Microfacies Types (SMT’s) were used to identify the original depositional environment of the units when they were deposited. A stratigraphic column of the section was also produced with seven units representing each a different depositional environment. The results indicate that in this section of La Romana the Haitises Formation represents a Carbonate Ramp. In addition two shallowing-upward sequences (two parasequences) were identified in the measured section.