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Heavy-mineral analysis of sedimentary rocks of northern Alaska

Open-File Report 52-102

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Abstract

The Navy Oil Unit of the United States Geological Survey has been investigating the geology of Naval Petroleum Reserve No. 4, northern Alaska. As part of this program, heavy-mineral samples were prepared from cores of the test wells and core holes and studied to determine stratigraphic correlations. Using the following criteria: (1) presence of diagnostic minerals or mineral suites; (2) relative abundance of specific minerals; (3) degree of rounding of mineral grains; (4) distinction as to grain form; eight heavy-mineral zones have been recognized in Triassic, Jurassic, Cretaceous, and Quaternary sedimentary rocks. Correlations based on these zones are shown. Source areas and rocks are discussed in relation to geologic history and genesis of the Mesozoic and Quaternary sedimentary rocks.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Heavy-mineral analysis of sedimentary rocks of northern Alaska
Series title:
Open-File Report
Series number:
52-102
Edition:
-
Year Published:
1952
Language:
ENGLISH
Publisher:
s.n.],
Description:
68 p. ill., folded map ;27 cm.