The Parguera Limestone of Mattson (1960) is here adopted. Mapped by Slodowski (1958) as the andesite member of the "Ensenada Formation". Members of Almy (1965) are not noted.
Source: GNU records (USGS DDS-6; Reston GNULEX).
Parguera Limestone is here restricted to the area south of the Lajas Valley because rocks mapped by Mattson (1960) as Parguera north of the Lajas Valley are lithologically different from the type Parguera. The Parguera is divided into an informal lower member, which includes Almy's Bahia Fosforescente and Punta Papaya Members of late Santonian to late Campanian age, and an informal upper member, which includes Almy's Isla Magueyes Member of late Campanian to early Maastrichtian age.
Source: GNU records (USGS DDS-6; Reston GNULEX).
The Parguera Limestone occurs in southwestern Puerto Rico and consists of a basal conglomerate that grades upward into limestone. Limestone in the upper part is composed of varied, coarse, skeletal clasts of fossils. Maximum estimated thickness is 1000 meters. The Parguera is of Late Cretaceous age.
Source: GNU records (USGS DDS-6; Reston GNULEX).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
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