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The geology of Alaska includes Precambrian igneous and metamorphic rocks formed in offshore terranes and added to the western margin of North America from the Paleozoic through modern times. The region was submerged for much of the Paleozoic and Mesozoic and formed extensive oil and gas reserves due to tectonic activity in the Arctic Ocean.
Alaska wilderness; exploring the Central Brooks Range 2nd ed. Berkeley: University of California Press. ISBN 0-520-24498-2; Mayfield, C.F. et al. (1984). Reconnaissance geologic map of southeastern Misheguk Mountain quadrangle, Alaska [Miscellaneous Investigations Series Map I-1503]. Reston, Va.: U.S. Department of the Interior, U.S. Geological ...
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The Chugach Mountains of southern Alaska are the northernmost of the several mountain ranges that make up the Pacific Coast Ranges of the western edge of North America. The range is about 250 miles (402 km) long and 60 miles (97 km) wide, and extends from the Knik and Turnagain Arms of the Cook Inlet on the west to Bering Glacier , Tana Glacier ...
Alaska is larger than all but 18 sovereign nations (it is slightly larger than Iran but slightly smaller than Libya). Alaska is home to 3.5 million lakes of 20 acres (8.1 ha) or larger. [3] Marshlands and wetland permafrost cover 188,320 square miles (487,700 km 2) (mostly in northern, western and southwest flatlands).
Map from the US Bureau of Land Management showing structures that create the oil fields in Alaska North Slope geologic cross section Geophysical Service Inc. seismic exploration crew, Deadhorse, Alaska, 1981. Under the North Slope is an ancient seabed, which now contains large amounts of petroleum. Within the North Slope, there is a geological ...
Denali in Alaska is the highest mountain peak of North America. Denali is the third most topographically prominent and third most topographically isolated summit on Earth after Mount Everest and Aconcagua. This article comprises three sortable tables of major mountain peaks [a] of the U.S. State of Alaska.
The Wrangellia terrane (named for the Wrangell Mountains, Alaska) is a crustal fragment extending from the south-central part of Alaska and along the Coast of British Columbia in Canada. Some geologists contend that Wrangellia extends southward to Oregon, [1] although this is not generally accepted.