Ruidiaz-Santiago, Cyd M.

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Facies distribution model and sequence stratigraphic model of mid tertiary rocks exposed in east side of Guanica Bay, Puerto Rico
(2013) Ruidiaz-Santiago, Cyd M.; Santos-Mercado, Hernán; College of Arts and Sciences - Sciences; Ramírez, Wilson R.; Asencio, Eugenio; Department of Geology; Arroyo, José
A sequence stratigraphic model and facies distribution model was created for Middle- Tertiary rocks exposed on the east side of Guánica Bay. The models are based on lithology, fossil content, integrated with microfacies interpretation. The models use fieldwork data precisely, portraying an interpretation that integrates facies relationship and scale. Nine facies were identified in the study areas; exhibiting from allochemic sandstones to well developed carbonate reef facies. Depositional environments include platform margin, platform interior, slope and toe-of slope. The facies model was used for the identification of shallowing upward sequences and flooding surfaces, to correlate and interpret in sequence stratigraphic terms. At least 3 sequence boundaries were identified of 4th order or higher inside 4 depositional sequences. The sequence stratigraphic model shows the effect of tectonic influence in the deposition of a mixed carbonate siliciclastic system.