Filters: Tags: TERTIARY (X) > Date Range: {"choice":"week"} (X)

Filters Date Types (for Date Range) Contacts U.S. Geological Survey Categories Image (1) Tag Types Place (1) collection (1) label (1) Tag Schemes http://www.sciencebase.gov/vocab/undefined/DenverHistoryPhotoLibrary/PhotoMedia (1) View Results as: JSON ATOM CSV

Cliffs of Tertiary limestone above slopes. Arecibo County, Puerto Rico. 1922. Cliffs of Tertiary limestone above slopes developed in igneous rocks, etc. of older series; view up west canyon wall from same point as images 586 and 587. Arecibo County, Puerto Rico. February 1922. Categories: Image; Tags: Arecibo County, Puerto Rico, Tertiary, photo print