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Coal Resources of the United States
A report about the United States's coal supply. The U.S. has 25 percent of the world's identified coal resources and about 20 percent of the world's estimated total coal resources.
Date:
January 1, 1974
Creator:
Averitt, Paul
System:
The UNT Digital Library
Changes in Stratigraphic Nomenclature by the U.S. Geological Survey, 1972
A list of stratigraphic names which are adopted, revised, reinstated, or abandoned are listed. The scheme of the list has been devised simply to facilitate depiction and analyses of the Precambrain history of the United States.
Date:
1974
Creator:
Cohee, George V. & Wright, Wilna B.
System:
The UNT Digital Library
Stratigraphic Nomenclature of the Thirtynine Mile Volcanic Field, Central Colorado
A report about the geology, composition, and stratigraphic nomenclature of the thirtynine mile volcanic field in central Colorado.
Date:
1974
Creator:
Epis, Rudy C. & Chapin, Charles E.
System:
The UNT Digital Library
Silurian, Devonian, and Mississippian Formations of the Funeral Mountains in the Ryan Quadrangle, Death Valley Region, California
From abstract: A composite section of the Silurian, Devonian, and Mississippian formations in the Funeral Mountains between Death Valley and Amargosa Valley is about 4,700 feet thick. The formations are in the top of a concordant, complexly faulted sequence that is about 25,000 feet thick from the highest part of the Precambrian to the Upper Mississippian. The Silurian and younger formations consist of marine dolomite and limestone that contain some regionally characteristic cherty and siliceous clastic beds as well as widely spaced fossiliferous zones.
Date:
1974
Creator:
McAllister, James Franklin
System:
The UNT Digital Library