Geological mapping in Doonerak Fenster, Central Brooks Range, Alaska

Conference · Mon Apr 01 04:00:00 EST 1985 · Am. Assoc. Pet. Geol., Bull.; (United States)

OSTI ID:6022281

Mull, C C; Adams, K E; Dillon, J T

Mapping of the north flank of the Doonerak fenster has traced the Amawk thrust, the sole fault of the Endicott Mountains allochthon, from the North Fork of the Koyukuk River - Mount Doonerak area eastward for more than 40 km (25 mi) to the east plunge of the Doonerak anticline at Koyuktuvuk Creek near the Dietrich River. Mapping has concentrated on the structural style of the area and on the autochthonous or parautochthonous Carboniferous Lisburne Group, Kayak shale, Kekiktuk Conglomerate - which are present along most of the anticline - and Triassic Karen Creek Sandstone, Triassic Shublik Formation, and Permian-Triassic Sadlerochit Group - which are present only in the west. This Triassic to Mississippian section closely resembles the coeval autochthonous to Parautochthonous Ellesmerian section of the subsurface to the north and in the Brooks Range to the northeast.

• Research Organization: Alaska Div. Geological and Geophysical Surveys, Anchorage
• OSTI ID: 6022281
• Report Number(s): CONF-8505215-
• Conference Information: Journal Name: Am. Assoc. Pet. Geol., Bull.; (United States) Journal Volume: 69:4
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
580100* -- Geology & Hydrology-- (-1989)
ALASKA
CONGLOMERATES
FEDERAL REGION X
GEOLOGIC AGES
GEOLOGIC FORMATIONS
GEOLOGIC STRUCTURES
MAPPING
MESOZOIC ERA
MISSISSIPPIAN PERIOD
NORTH AMERICA
PALEOZOIC ERA
PENNSYLVANIAN PERIOD
PERMIAN PERIOD
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
SHALES
TRIASSIC PERIOD
USA