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Shorter Contributions to General Geology, 1928
From introduction: The district discussed in this report embraces the entire northern peninsula of Michigan and the parts of northern Wisconsin and northeastern Minnesota that were covered by a re-advance of the Superior lobe of the Labrador ice sheet late in the Wisconsin stage of glaciation.
Date:
1929
Creator:
Mendenhall, W. C.
System:
The UNT Digital Library
Bitumen-Bearing Deposits of the United States
The following report summarizes the locations, resources, and petrophysical data of known bitumen-bearing deposits located primarily in Alabama, California, Kentucky, Texas, and Utah.
Date:
1988
Creator:
Crysdale, Bonnie L. & Schenk, Christopher J.
System:
The UNT Digital Library