Filters: Tags: Igneous (X) > Date Range: {"choice":"year"} (X)

Filters Date Types (for Date Range) Contacts (Less) U.S. Geological Survey Alexander Iriondo Amy Atwater Michael J. Kunk Ryan J. McAleer USGS Geological Materials Repository Categories (Less) Image (2) Collection (1) Data (1) Tag Types theme (1) Place (2) collection (2) label (2) Resource Type (1) Status (1) Theme (1) Tag Schemes http://www.sciencebase.gov/vocab/undefined/DenverHistoryPhotoLibrary/PhotoMedia (2) View Results as: JSON ATOM CSV

View down Arecibo River from sharp bend, valley here cut in igneous rocks etc. of older series. Arecibo County, Puerto Rico. 1922. View down Arecibo River from sharp bend at Kilometer 58, Hectometer 5 on Arecibo-Ponce road. Valley here cut in igneous rocks etc. of older series. Arecibo County, Puerto Rico. February 1922. Categories: Image; Tags: Arecibo County, Puerto Rico, Igneous, photo print The USGS Michael J. Kunk Geological Sample Collection This collection consists of geological samples associated with the research of USGS Scientist Emeritus Michael J. Kunk. The collection contains rock samples stemming from Kunk’s earth science research in North America on geochronology, geochemistry, landscape evolution, volcanology, mineralogy, and structural geology. This collection contains four pallets of geological samples and materials. Categories: Collection, Data; Tags: Collection, Geology, Mexico, North America, Stratigraphy, All tags... United States, completed, critical minerals, dating techniques, energy resources, geochemistry, geochronology, igneous, landscape evolution, mineralogy, minerals, ndc_collection, plate tectonics, rare-earth elements, structural geology, volcanology, Fewer tags View up Arecibo Canyon from sharp bend at Kilometer 58. Arecibo County, Puerto Rico. 1922. View up Arecibo Canyon from sharp bend at Kilometer 58, Hectometer 5 on Arecibo-Ponce road. Valley here cut in igneous rocks etc. of older series. Arecibo County, Puerto Rico. February 1922. Categories: Image; Tags: Arecibo County, Puerto Rico, Igneous, photo print