Transactions of the Caribbean Geological Conference

andesite anticline Antilles Bajos Fault basalt basin bauxite beach rock beds belt blanket sands British Guiana calcareous Caribbean Central Cipero clay coast coastal conglomerates correlation Cretaceous Cuba deposits depth diorite drilled east eastern Eocene erosion facies fauna feet field flank flow folded foraminifera Forest Formation fossils Geol Geological Survey geologists geosyncline grained Guiana Shield Herrera sands intrusive Island Jamaica keratophyre lateritic limestone lithology marine metamorphic meters middle miles mineral Miocene Morne l'Enfer Moruga Mountains Northern Range occur oilfield Oligocene outcrop Paleocene phyllites planktonic plutonic present probably Puerto Rico quadrangle quartz region Río Rio Seco River Roraima rudist samples San Sebastián sandstones sea level sedimentary sediments sequence shales silt southern species spilites stratigraphic structure surface syncline tectonic Tertiary thickness tion Trinidad tuff Turonian unconformity Unit Upper Cretaceous Venezuela volcanic rocks zone