Río Hatillo Formation

The Río Hatillo Formation is a geologic formation in Dominican Republic. It preserves bivalve, echinoid, gastropod and ammonite fossils dating back to the Early Albian period.

Rio Hatillo Formation
Stratigraphic range: Early Albian
Type	Formation
Lithology
Primary	Sandstone
Other	Conglomerate, limestone
Location
Coordinates	19.2°N 70.7°W / 19.2; -70.7
Country	Dominican Republic
Río Hatillo Formation (the Dominican Republic)

Description

Río Hatillo Formation comprises a basal conglomerate, sandstones and calcareous sandstones, covered by a massive biogenic limestone. The formation was probably deposited in a shallow, near-shore environment as part of the Cretaceous Volcanic Arc sections.^[1]

See also

• List of fossiliferous stratigraphic units in the Dominican Republic