... in the lower part of the Juana Diaz intertongue with a thick reef complex 8–14 km west-northwest of Ponce. The limestone contains abundant corals and algae and, in places, Lepidocyclina undosa . Near Penuelas it contains lenses of cobbly sand and mudstone. It is overlain by chalk, probably equivalent...

... the lithologic equivalence of the pelagic claystones of Rio Jacaguas and the reefal limestone in the Penuelas area; both are thick units of regional extent and cannot be included in one and the same formation. The same applies to the beds that Seiglie and Bermúdez (1969) have informally called “Angola...

... . Krushensky R.D. Monroe W.H. , 1978 , Geologic Map of the Yauco and Punta Verraco Quadrangle , Puerto Rico : U.S. Geological Survey Miscellaneous Investigations Series Map I-1147 , scale 1:20,000 . Krushensky R.D. Monroe W.H. , 1979 , Geologic Map of the Peñuelas and Punta Cuchara...

... Limestone is estimated to be thicker than 200 m between Ponce and Tallaboa cities (Penuelas and Punta Cuchara quadrangles) ( Monroe 1980 ). Recent studies using strontium isotopes have refined and further constrained some of the biostratigraphic ages for the Ponce Limestone ( Ramirez et al. 2006 ; Ruidiaz...