A rock specimen of the upper surface of the nodule bed at locality pictured in photo no. 33. Custer County, South Dakota. Circa 1967.
Dates
Date Taken
1967
Summary
A rock specimen of the upper surface of the nodule bed at locality pictured in photo no. 33. The upper surface of the matrix in which the nodules are embedded is made up of iron oxides resulting from the oxidation of underlying pyrite. Custer County. South Dakota. Circa 1967. Published as figure 4 in U.S. Geological Survey Professional Paper 594-L. 1968.
Summary
A rock specimen of the upper surface of the nodule bed at locality pictured in photo no. 33. The upper surface of the matrix in which the nodules are embedded is made up of iron oxides resulting from the oxidation of underlying pyrite. Custer County. South Dakota. Circa 1967.
Published as figure 4 in U.S. Geological Survey Professional Paper 594-L. 1968.
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