Late Oligocene-Pliocene Transgressive-Regressive Cycles of Sedimentation in Northwestern Puerto Rico
George A. Seiglie, Mounir T. Moussa, 1984. "Late Oligocene-Pliocene Transgressive-Regressive Cycles of Sedimentation in Northwestern Puerto Rico", Interregional Unconformities and Hydrocarbon Accumulation, John S. Schlee
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Several transgressive-regressive sedimentation cycles were recognized in the upper Oligocene to lower Pliocene in northwestern Puerto Rico. These are represented by the upper San Sebastian-Lares, “lower Montebello,” Los Puertos, “Aymamon,” and Quebradillas formations. The inner neritic to terrestrial paleoenvironments of the Cibao Formation do not allow the recognition of cycles.
Correlation of the northern Puerto Rican cycles of sedimentation with global sea-level changes is possible because tectonic movements in the Oligocene to Pliocene did not affect the water paleodepths significantly. The cycles of sedimentation were used to correlate some of the lithostratigraphic units of northern Puerto Rico.
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Interregional Unconformities and Hydrocarbon Accumulation
The result of a session at the 1981 AAPG Annual Meeting, this volume attempts to document global age and magnitude of sea-level shifts, and ultimately, the cause of the short-term shifts. Twelve individual papers were published on topics such as: comparative anatomy of cratonic unconformities; relation of unconformities, tectonics, and sea-level change; outcrop features and origin of basin margin unconformities; significant unconformities and the hiatuses represented by them; regional unconformities and depositional cycles; relative sea-level changes during the Middle and Late Cretaceous; Late Oligocene-Pliocene transgressive-regressive cycles of sedimentation; oxygen-isotope record of ice-volume history; oceanic ridge volumes and sea-level change; Jurassic unconformities, chronostratigraphy, and sea-level changes; Cenozoic regional arosion of the Abyssal sea floor; and depositional sequences and stratigraphic gaps on submerged United States Atlantic margin.