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Federal Lands in Alaska - Geologic Studies

Project Chief

Jeanine M. Schmidt


This project addressed the need for detailed geologic mapping on Federal lands in Alaska, which constitute a large percentage of the onshore portion of the state. From southeastern Alaska to the Aleutians to the Arctic Ocean, these lands occur within a wide variety of land-management units and geologic settings, but the necessary geoscience data applicable to managing these Federal lands is often inadequate. This project worked with Federal land-management agencies to identify areas where USGS expertise could provide data and reports to be used by those agencies in a systematic and interdisciplinary process that integrated both natural and social sciences in land-use planning and decisions.


Relevance and Impact

This project directly addressed issues of the highest management and scientific priorities on Federal Lands in Alaska. In Alaska, Federal lands constitute 64% of the onshore portion of the state, and 37% of all Federal lands in the Nation. These lands are administered by various agencies: Bureau of Land Management, National Park Service, U.S. Fish and Wildlife Service, U.S. Forest Service, U.S. Army and U.S. Air Force. The geologic maps available for these lands are reconnaissance in nature and do not provide the type, scale, quality, or quantity of geoscience data needed for effective land-use decisions. The work accomplished on this project provided the required geologic, geophysical, and geochemical data on a finer scale than previous maps for the areas identified by the requesting agency. Such data included specific information that is relevant to issues such as resource development, hazard mitigation, habitat designation, tourism, environmental impacts, etc.

Products and Publications

Geoscience for Alaska’s D-1 lands—A preliminary report
U.S. Geological Survey Open-File Report, OFR 2007-1286 (2007).

Undiscovered locatable mineral resources in the Bay Resource Management Plan area, southwestern Alaska--A probabilistic assessment
U.S. Geological Survey Scientific Investigations Report, SIR 2007-5039 (2007).

Preliminary 2D potential field models of the Longview and Lakeview barite deposits, southern National Petroleum Reserve, Alaska (NPRA) [abstract]
Mining—Energizing Alaska's Mineral Industry—Abstracts from Alaska Miner's Association Annual Meeting, Nov. 6-11, 2006, Anchorage, AK, p. 11-12 (2006).

New U-P SHRIMP ages from Devonian felsic volcanic and Proterozoic plutonic rocks of the southern Brooks Range, Alaska [abstract]
Geological Society of America Abstracts with Programs, v.38, no. 5, p. 12 (2006).

The extent, boundaries, and crustal character of Wrangelllia in southern Alaska [abstract]
Geological Society of America Abstracts with Programs, v. 38, no. 5, p. 25 (2006).

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Last Modified: 21 April 2017