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Rocks and deposits
Solid masses that make up the earth's crust as well as accumulations of materials. Use for major rock types and unconsolidated deposits. For deposits of economic value, see related terms.
Subtopics:
Fossils (14 items)
Igneous rocks (10 items)
Metamorphic rocks (2 items)
Permafrost (2 items)
Petroleum (79 items)
Sedimentary rocks (14 items)
Unconsolidated deposits (20 items)

Lithologic maps (20 items)
Related topics:


Results 121 - 130 of 167 listed by similarity [list alphabetically]
Map of assessed tight-gas resources in the United States [More info]
Shows where there are potential commercial sources of natural gas trapped in formations with very low permeability to gas (not necessarily shale units). Hydraulic fracturing might be needed in order to exploit these resources.
Marine aggregate resources and processes [More info]
Regional studies mapping the seafloor sedimentary character and assessing marine sand and gravel resources around the United States, to inform beach nourishment and coastal restoration, benthic habitat and sediment transport studies
Mars Global Digital Dune Database; MC-1 [More info]
Distribution and morphological character of moderate to large size dune fields on Mars from 65 degrees North to the north pole.
Megafossils: vertebrates - technique of paleontological analyses [More info]
Brief description of vertebrates and use of their fossil bones and footprints to aid in dating strata in biostratigraphy and to decipher past climates and recreate ancient ecosystems in paleoecology, paleoclimatology and paleobiogeography.
Mineral deposit models [More info]
Publications by the USGS on mineral deposit models converted to digital files that can be downloaded. Some are *.pdf files requiring Adobe Acrobat Reader to view and download text
Mollusks [More info]
Information on mollusks and uses of the identification of fossil mollusks in the fields of biostratigraphy, geochronology, paleocoeanography, paleoecology and ecosystems history. Links to experts and related USGS projects.
PDF Monitoring and analysis of sand dune movement and growth on the Navajo Nation, southwestern United States [More info]
We combine long-term records from aerial photographs, detailed mapping using survey-grade GPS, and ground-based lidar with meteorological monitoring. Sand dune migration rates are currently about 35 meters per year.
Multielement geochemical dataset of surficial materials for the northern Great Basin [More info]
This report presents geochemical data generated during mineral and environmental assessments for the Bureau of Land Management in northern Nevada, northeastern California, southeastern Oregon, and southwestern Idaho, along with metadata and maps.
PDF Nahcolite Resources in the Green River Formation, Piceance Basin, Northwestern Colorado [More info]
Resource assessment of nahcolite, a mineral with a variety of industrial uses, which occurs with oil shale and is affected by the processes used to recover hydrocarbons from the rock.
North Cascades National Park geology, a mountain mosaic [More info]
Homepage for information on geology of the North Cascades National Park in the state of Washington. Includes links to geologic story, geologic field trips, geologic maps, plate tectonics, rocks and minerals, geologic time, and glossary.
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