Lateral Ramps in the Folded Appalachians and in Overthrust Belts Worldwide—A Fundamental Element of Thrust-Belt Architecture (open access)

Lateral Ramps in the Folded Appalachians and in Overthrust Belts Worldwide—A Fundamental Element of Thrust-Belt Architecture

A report about lateral ramps which are zones where décollements change stratigraphic level along a strike. This report suggests that many cross-strike features may be underlain by lateral ramps that serve to transfer décollements from one stratigraphic level to another in the same manner as frontal ramp, but in a direction normal to the strike of the fold belt.
Date: 1998
Creator: Pohn, Howard A.
System: The UNT Digital Library
Geologic, Geochemical, and Isotopic Studies of a Carbonate- and Siliciclastic-Hosted Pb-Zn Deposit at Lion Hill, Vermont (open access)

Geologic, Geochemical, and Isotopic Studies of a Carbonate- and Siliciclastic-Hosted Pb-Zn Deposit at Lion Hill, Vermont

A report about the potential for Irish-type Pb-Zn deposits in a platform rocks of western Vermont; however, at Lion Hill they contain enrichments of Pb, Zn, and Cu rather than a Pb, Zn, and Ag association.
Date: 1995
Creator: Foley, Nora K.; Clark, Sandra H. B.; Woodruff, Laurel G. & Mosier, Elwin L.
System: The UNT Digital Library
Geochemistry, Mineralogy, and Geochronology of the U.S. Virgin Islands (open access)

Geochemistry, Mineralogy, and Geochronology of the U.S. Virgin Islands

A report about the geochemical and mineralogic study of the U.S. Virgin Islands indicates the presence of a previously undocumented Sn-Pb and precious metals.
Date: 1994
Creator: Alminas, Henry V.; Foord, Eugene E. & Tucker, Robert E.
System: The UNT Digital Library
Geologic Studies in Alaska by the U.S. Geological Survey, 1990 (open access)

Geologic Studies in Alaska by the U.S. Geological Survey, 1990

A collection of papers which report on the geologic investigations in Alaska. It represents the broad range of U.S. Geologic Survey research activities carried out in Alaska.
Date: 1992
Creator: Bradley, Dwight C. & Ford, Arthur B.
System: The UNT Digital Library
Geochemical, Biogeochemical, and Sedimentological Studies of the Green River Formation, Wyoming, Utah, and Colorado (open access)

Geochemical, Biogeochemical, and Sedimentological Studies of the Green River Formation, Wyoming, Utah, and Colorado

A report about new geochemical, biogeochemical, and sedimentological data gathered from the depositional basins of the Green River Formation.
Date: 1991
Creator: Tuttle, Michele L.
System: The UNT Digital Library