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Geology and ground water in the central part of Apache County, Arizona
J. P. Akers
1965, Water Supply Paper 1771
The central part of Apache County, Ariz., includes an area of about 3,300 square miles between the Navajo Indian Reservation to the north and U.S. Highway 60 to the south. Sedimentary rocks in the area range from Pennsylvanian to Quaternary in age and from 2,000 to more than 6,000 feet...
Geology and ore deposits of the central York Mountains, western Seward Peninsula, Alaska
C.L. Sainsbury
1965, Open-File Report 65-142
In the central York Mountains, carbonate rocks of Lower and Middle Ordovician age and aggregating at least 8,000 feet thick are thrust northward over slate and argillaceous limestone of pre-Ordovician age which were intruded by gabbro in pre-Ordovician time. Normal faults of four distinct systems cut the thrust plates, and...
Geology of the Romanzof Mountains, Brooks Range, northeastern Alaska
Edward G. Sable
1965, Open-File Report 65-141
This remote 700 square mile area in the Brooks Range is topographically rugged and geologically diverse; it contains a granitic pluton, low-grade metamorphic rocks, sedimentary rocks, and mafic igneous rocks, as well as glacial features.Rocks of sedimentary origin include from oldest to youngest:1.Neruokpuk Formation Middle and Upper Devonian(?), more than...