Provenance and petrofacies, Upper Devonian sandstones, Philip Smith Mountains and Arctic quandrangles, Brooks Range, Alaska: Final report, Project No. 3

Technical Report · Sun Nov 01 00:00:00 EST 1987

OSTI ID:6513422

Anderson, A V; Coney, P J

Late Devonian sandstone beds are exposed as allochthonous sequences that extend for over 1000 km along the east-west strike of the Brooks Range in northern Alaska. These horizons, at least in part, record Late Devonian tectonism and deposition along the southern margin of the Arctic Alaska block. This study identifies clastic petrofacies in the western Philip Smith Mountains and southern Arctic quadrangles and infers the composition of the source terrane. The paleogeography is not known and the original distribution of lithofacies is uncertain, owing to the extensive post-depositional tectonism. In the study area the sandstones are exposed along rugged mountain tops and high ridges. Although exposures are excellent, access is often difficult. Samples were collected from exposures near the western end of the Chandalar Shelf, Atigun Pass, and the Atigun River valley in the Philip Smith Mountains quadrangle and from the Crow Nest Creek and Ottertail Creek areas in the Arctic quadrangle. 34 refs., 17 figs.

• Research Organization: Arizona Univ., Tucson (USA). Dept. of Geosciences
• DOE Contract Number: AC21-84MC21129
• OSTI ID: 6513422
• Report Number(s): DOE/MC/21129-2647; ON: DE89000908
• Resource Relation: Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
ALASKA
MOUNTAINS
GEOLOGIC HISTORY
CLASSIFICATION
COMPARATIVE EVALUATIONS
GEOLOGIC FORMATIONS
LITHOLOGY
MAPPING
OROGENESIS
PLATE TECTONICS
PROGRESS REPORT
SANDSTONES
DOCUMENT TYPES
FEDERAL REGION X
NORTH AMERICA
ROCKS
SEDIMENTARY ROCKS
TECTONICS
USA
580201* - Geophysics- Seismology & Tectonics- (1980-1989)
580100 - Geology & Hydrology- (-1989)