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| U.S. Geological Survey Gould Hall 4200 University Drive Anchorage, AK 99508-4667 (907) 786-7495 |  |
Interested in Metallic Minerals in Alaska ? Click here to check out the Alaska Resource Data Files ONLINE!
Large mafic igneous province (LIP) in Central AK: modeling of the magmatic feeder system to the Nikolai LIP - This DOI-BLM collaborative project investigates the stratigraphic and structural controls on magma dynamics of a mafic large igneous province (LIP). The LIP under investigation is the Nikolai Greenstone, which is one of the oldest (Middle to Late Triassic, 230 million year old) flood basalt events preserved in the world. The Nikolai formed a continental scale mass whose remnants are preserved along the western North American margin from Idaho to western Alaska.. - Co-Project Leaders: Jeanine Schmidt and Jonathon Glen
Tintina Metallogenic Province Integrated Studies on Geologic Framework, Mineral Resources, and Environmental Signatures - The Tintina gold province is an arcuate, 1,200-km-long metallogenic province extending from northern British Columbia into southwestern Alaska. The province includes such large gold deposits as Pogo, Fort Knox, True North, Donlin Creek, and Shotgun and remains a prime area for gold exploration. This Project will address several critical issues related to origin, controls on emplacement, and the environmental consequences related to development of mineral resources. Project Leader Larry Gough
Data at Risk - Alaska - The objective of this project is to locate, clean-up, collate, and make publicly available geologic- and minerals-related data for Alaska. The USGS is directly responsible for geochemical, bibliographic, and mineral deposit databases. The USGS is indirectly responsible, via pass through funding, for library and archive efforts, fossil databases, and legacy data rescue. Project Leader Bruce Gamble
Regional geologic and mineral deposit data for Alaskan economic development - The main project objective is to collect new geologic, geochemical, and geophysical data in areas or regions that have some critical need (or perhaps current issue) with the hope of spurring exploration and hence economic development in Alaska. The project is expected to run over a 10- to 15-year period. Two initial focus areas were selected through a scoping effort involving input from government and private customers, and consideration of geologic, resource, and economic factors. Future focus areas will be selected through a similar process, but the strategy for selection will remain flexible to account for evolving needs and issues. Much of Alaska's economy is based on the development of natural resources. The lack of basic geologic geochemical, and geophysical information in many areas of Alaska means that any new data collection has a high probability of stimulating exploration activity, and hence economic growth. The two initial focus areas of this project include Federal, State, and Alaska Native lands. Project Leader Marti Miller
Early Tertiary Slab Window in Alaska and it's Resource Implications - This project tests the hypothesis that a gap between two subducting plates is responsible for a wide array of geologic features across an enormous area in Alaska: plutons, volcanic fields, sedimentary basins, ore deposits, and hydrocarbon systems. The gap, or "slab window", was analogous to a moving blowtorch heating the earth's crust from below. A few previous studies have found links between a slab window and particular examples of mineral deposits, but never has a systematic study sought to understand slab window tectonics on a regional scale, to incorporate key findings into ore deposit models, or to test the applicability of this concept to petroleum maturation or migration--principles that can be applied worldwide. - Lead Project Chief: Dwight C.Bradley
Alaska Resource Data
File project - The Alaska Resource Data File (ARDF) is a subset
of the National Mineral Resource Data System (MRDS) that has been specifically
re-formatted and re-designed to better meet the needs of the local user
community. The database contains over 4500 mineral site locations for Alaska.
ARDF is available online.- Project
Leader: Frederic Wilson
Surveys and Analysis,
Alaska- The objective of the integrated Surveys and Analysis (S&A)
projects is to develop national digital datasets categorized in four major
themes: geology, mineral deposits, geochemistry, and geophysics, and to
integrate, analyze, and interpret these data in order to assess mineral
resources, determine regional background values for chemical elements with
known environmental impact, characterize regional mineral districts, define
metallogenic provinces, and study the relationship between toxic commodities
or mining practices and human health. These interpretive studies involve
contributions from a wide variety of disciplines and partners. Project
Leader : Frederic Wilson
Alaska section GIS
project- This project provides geographic information systems (GIS)
support for MRP-WR-Alaska Section. GIS support includes creation/provision
of regional spatial geoscience data sets and assistance in spatial analyses
of the data. The GIS project helps coordinate and standardize the digital
activities of the Alaska Section and maintains regional spatial data sets.-
Project Leader: Nora Shew
Talkeetna Mountains Transect: tectonics and metallogenesis of south-central Alaska - Three of the largest, tectonically most important terranes in south-central Alaska--Kahiltna, Wrangellia, and Peninsular--are amalgamated in the proposed study transect, and fragments of 4 other, poorly known terranes occur to the NW in the State's Chulitna EM tract. Our objectives are (1) to refine the deposit types within each terrane, (2) to add to data about the tectonic environments within, and structural relations between, these major terranes, and (3) to improve understanding of the genesis of the deposit types in the Talkeetna Mountains and by extension to a broad region of south-central Alaska. Project Leader: Jeanine Schmidt
Flux of Atmospheric
vs. Terrestrial Inorganic Elements, Yukon Basin NASQAN Study Area -
The USGS National Stream Quality Accounting Network (NASQAN), in cooperation
with other programs (e.g., Mineral Resources), is planning a 5-year effort
to characterize the water quality of the Yukon River. These data will address
two important environmental problems. (1) Data will be collected to provide
a baseline against which to compare changes that may occur in the yukon
over the next 20 to 50 years as a result of climatic change. This effort
will focus on measuring the carbon and nitrogen phases in the river that
is fundamental to the health of the ecosystem. (2) The program will measure
organic and inorganic contaminants in atmospheric deposition, water, sediment
and fish tissue and measure pathogens in the water that may effect humans
and wildlife. Lead Project Chief: Bronwen Wang
Mineral potential for SE Alaska -The objectives are to bring together regional, local, and topical experts in a workshop to apply a range of perspectives to developing an updated understanding of mineral potential in southeastern Alaska and to provide direction for prioritizing future work in the area, and creating a long-range plan to accomplish this work to the Minerals Program chair. Project Chief: Susan M. Karl
Precambrian and Triassic
VMS deposits in the Ketchikan airborne geophysical survey area - The
proposed investigation will analyze the Ketchikan airborne geophysical
survey data with respect to the local and regional geology, and characterize
the Precambrian VMS belt with three interrelated tasks: Task 1 will encompass
geologic, isotopic, geochemical, and structural investigations of the host
rocks, known ore deposits, and other key mineral occurrences, with guidance
from previous USGS investigators and the BLM geologists who have described
the deposits and are collaborators in the study. Task 2 will be focused
geophysical interpretations and interactive geophysical-geological analyses.
Task 3 will be the production of an updated geologic map of the study area
that will also incorporate ten years of new mapping, paleontologic, and
radiometric information not yet published. Project Leader: Susan Karl
Tectonics and Metallogenesis
of Alaska - Ongoing efforts to compile national geologic, geophysical,
geochemical, and mineral resource databases have revealed large gaps in
knowledge-particularly in Alaska. This project is aimed at understanding
the framework geology and mineral resources of poorly understood mineral
frontier areas in the Alaskan Surveys & Analysis priority area. - Project
Leader: Dwight Bradley
Link to all Mineral Resources Program projects in the Western Region
USGS Mineral Resource Sites |
Related AK Sites and Other USGS Programs |
| Minerals Information |
Eastern Mineral Resources |
Central Mineral Resources |
Western Mineral Resources |
Crustal Imaging & Characterization |
Spatial Data |
