Skip to main content
U.S. flag

An official website of the United States government

Frederic Wilson

Ric is a Research Geologist for the Alaska Science Center.

Science and Products

link
Alaska Resource Data File quadrangle map

Alaska Resource Data File

The Alaska Resource Data File (ARDF) site provides descriptions of mines, prospects, and mineral occurrences for individual U.S. Geological Survey 1:250,000-scale quadrangles in Alaska.
By
Mineral Resources Program, Alaska Science Center
link

Alaska Resource Data File

The Alaska Resource Data File (ARDF) site provides descriptions of mines, prospects, and mineral occurrences for individual U.S. Geological Survey 1:250,000-scale quadrangles in Alaska.
Learn More
link
Alaska geology map revealed

Alaska Databases and Information Analysis

We provide GIS and database support for Alaska-based research projects, including database design, data capture, and maintenance, GIS analysis and display, and production of datasets and metadata for publication and data releases.
By
Mineral Resources Program, National Cooperative Geologic Mapping Program, Alaska Science Center
link

Alaska Databases and Information Analysis

We provide GIS and database support for Alaska-based research projects, including database design, data capture, and maintenance, GIS analysis and display, and production of datasets and metadata for publication and data releases.
Learn More
link
Map of Alaska with multiple colors throughout the state representative areas of different geology.

Geologic Map of Alaska

In January 2016, the U.S. Geological Survey released the first ever digital geologic map of Alaska. This map reflects more than a century of work and provides a visual context for the abundant mineral and energy resources found throughout the state. The map also is available to use in three different formats: a professional GIS database, a public interactive version via a web browser, and an...
By
Mineral Resources Program, National Cooperative Geologic Mapping Program, Alaska Science Center, Earth Mapping Resources Initiative (Earth MRI)
link

Geologic Map of Alaska

In January 2016, the U.S. Geological Survey released the first ever digital geologic map of Alaska. This map reflects more than a century of work and provides a visual context for the abundant mineral and energy resources found throughout the state. The map also is available to use in three different formats: a professional GIS database, a public interactive version via a web browser, and an...
Learn More

U-Pb Isotope Geochronology Data and Geochemical Analyses of Selected Rocks from the Seldovia Quadrangle, Southcentral Alaska

This dataset contains U-Pb isotopic data and associated ages of zircons within the lithologic framework of igneous, metaigneous, and metasedimentary rocks collected from the Seldovia quadrangle in southcentral Alaska. The samples were collected as part of geological mapping and research conducted from 2020 to 2023 and funded by the Mineral Resources Program of the U.S. Geological Survey. Zircon gr
By
Alaska Science Center

Alaska Resource Data File (ARDF)

The Alaska Resource Data File (ARDF) is a database of mines, prospects, and mineral occurrences in Alaska. It contains information compiled from published and unpublished sources from industry, U.S. Bureau of Mines (BOM), U.S. Geological Survey (USGS), and other government and private sources. ARDF is not a mining claims database.
By
Alaska Science Center

Geochemical and 40Ar/39Ar Analytical Data of Rocks from Glacier Bay National Park and Preserve

This data set contains major and trace element geochemical data and 40Ar/39Ar isotopic data and ages for rock samples collected during 2016 fieldwork in Glacier Bay National Park and Preserve. The plutonic rock samples were collected for radiometric age determinations to test for the presence of the Late Jurassic to Early Cretaceous (130-160 Ma) Saint Elias suite. The age analyses indicate that al
By
Alaska Science Center

U-Pb zircon data for: Cretaceous plutonic rocks of western Glacier Bay National Park and Preserve

In 2016, with National Park Service support, several previously undated plutons were sampled in Glacier Bay National Park and Preserve along the west side of Glacier Bay for age determinations. Geochronologic analyses were conducted to determine the ages of the plutonic rocks in the Glacier Bay area. Five samples were collected by Frederic Wilson (USGS Alaska Science Center), from Dundas Bay and G
By
Mineral Resources Program, Alaska Science Center, Geology, Geophysics, and Geochemistry Science Center
Filter Total Items: 26

Bedrock geologic map of the 15' Sleetmute A-2 quadrangle, southwestern Alaska

Twelve unnamed, bedrock stratigraphic units are recognized within the Sleetmute A-2 1:63,360-scale quadrangle of southwestern Alaska. These units range in age from late(?) Proterozoic through Devonian and can be divided into two distinct facies belts: (1) a southern facies of dominantly shallow-water platform carbonate and minor siliciclastic rocks (including Early Ordovician–Early Devonian platfo
By
Alaska Science Center

Surficial geologic map of the Dillingham quadrangle, southwestern Alaska

The geologic map of the Dillingham quadrangle in southwestern Alaska shows surficial unconsolidated deposits, many of which are alluvial or glacial in nature. The map area, part of Alaska that was largely not glaciated during the late Wisconsin glaciation, has a long history reflecting local and more distant glaciations. Late Wisconsin glacial deposits have limited extent in the eastern part of th
By
Energy and Minerals Mission Area, Ecosystems Mission Area, Alaska Science Center

Reconnaissance surficial geologic map of the Taylor Mountains quadrangle, southwestern Alaska

This map and accompanying digital files are the result of the interpretation of aerial photographs from the 1950s as well as more modern imagery. The area, long considered a part of Alaska that was largely not glaciated (see Karlstrom, 1964; Coulter and others, 1965; or Péwé, 1975), actually has a long history reflecting local and more distant glaciations. An unpublished photogeologic map of the T
By
Groundwater and Streamflow Information Program, Mineral Resources Program, Alaska Science Center

Geologic map of Alaska

Summary This map and associated digital databases are the result of compilation and interpretation of published and unpublished 1:250,000-scale and limited 1:500,000- to 1:63,360-scale maps. Covering the entire state of Alaska, it reflects more than a century of work by a host of geologists and almost two decades of compilation work. There are two versions of the map: a detailed digital version, a
By
Energy and Minerals Mission Area, Ecosystems Mission Area, Mineral Resources Program, Alaska Science Center, Earth Mapping Resources Initiative (Earth MRI)

Reconnaissance geologic map of the Kuskokwim Bay region, southwest Alaska

The rocks of the map area range from Proterozoic age metamorphic rocks of the Kanektok metamorphic complex (Kilbuck terrane) to Quaternary age mafic volcanic rocks of Nunivak Island. The map area encompasses much of the type area of the Togiak-Tikchik Complex. The geologic maps used to construct this compilation were, for the most part, reconnaissance studies done in the time period from the 1950s

By
Ecosystems Mission Area, Mineral Resources Program, Alaska Science Center

Reconnaissance geologic map of Kodiak Island and adjacent islands, Alaska

Kodiak Island and its adjacent islands, located on the west side of the Gulf of Alaska, contain one of the largest areas of exposure of the flysch and melange of the Chugach terrane of southern Alaska. However, in the past 25 years, only detailed mapping covering small areas in the archipelago has been done. This map and its associated digital files (Wilson and others, 2005) present the best avail
By
Ecosystems Mission Area, Mineral Resources Program, Alaska Science Center

Geologic map of the Cook Inlet region, Alaska, including parts of the Talkeetna, Talkeetna Mountains, Tyonek, Anchorage, Lake Clark, Kenai, Seward, Iliamna, Seldovia, Mount Katmai, and Afognak 1:250,000-scale quadrangles

In 1976, L.B. Magoon, W.L. Adkinson, and R.M. Egbert published a major geologic map of the Cook Inlet region, which has served well as a compilation of existing information and a guide for future research and mapping. The map in this report updates Magoon and others (1976) and incorporates new and additional mapping and interpretation. This map is also a revision of areas of overlap with the geolo
By
Ecosystems Mission Area, Mineral Resources Program, Alaska Science Center

Geology of the Prince William Sound and Kenai Peninsula region, Alaska: Including the Kenai, Seldovia, Blying Sound, Cordova, and Middleton Island 1:250,000-scale quadrangles

The Prince William Sound and Kenai Peninsula region includes a significant part of one of the world’s largest accretionary complexes and a small part of the classic magmatic arc geology of the Alaska Peninsula. Physiographically, the map area ranges from the high glaciated mountains of the Alaska and Aleutian Ranges and the Chugach Mountains to the coastal lowlands of Cook Inlet and the Copper Riv

By
Ecosystems Mission Area, Mineral Resources Program, Alaska Science Center

Geologic Map of the Yukon-Koyukuk Basin, Alaska

This map and accompanying digital files represent part of a systematic effort to release geologic data for the United States in a uniform manner. All the geologic data in this series will be published as parts of the U.S. Geological Survey Data Series. The geologic data in this series have been compiled from a wide variety of sources, ranging from state and regional geologic maps to large-scale fi
By
Ecosystems Mission Area, Alaska Science Center

World heritage site - Bien du Patrimoine Mondial - Kluane/Wrangell-St. Elias/Glacier Bay/Tatshenshini-Alsek

The four parks depicted on this map make up a single World Heritage Site that covers 24.3 million acres. Together, they comprise the largest internationally protected land-based ecosystem on the planet. The United Nations Educational, Scientific and Cultural Organization (UNESCO) established the World Heritage Program in 1972 for the identification and protection of the world?s irreplaceable natur

Maps showing the resource assessment of the Port Moller, Stepovak Bay, and Simeonof Island quadrangles, Alaska Peninsula with a section on geology of the Pyramid porphyry copper deposit, Alaska Peninsula, Alaska

No abstract available.
By
Ecosystems Mission Area, Alaska Science Center

Geologic map of Port Moller, Stepovak Bay, and Simeonof Island quadrangles, Alaska Peninsula, Alaska

Geologic mapping of Port Moller, Stevopak Bay, and Simeonof Island 1° by 2° quadrangles on the Alaska Peninsula was conducted as part of the Alaska Mineral Resource Assessment Program (AMRAP). Geologic observations was obtained by using helicopter overflights, vertical aerial photography, and enhanced and extensively processed Landsat imagery (York and others, 1984; Wilson and York, 1985). Helicop
By
Ecosystems Mission Area, Alaska Science Center
The old Kennecott copper mill in the winter with the characteristic red colored buildings
The old Kennecott copper mill in the winter
The old Kennecott copper mill in the winter
The old Kennecott copper mill in the winter with the characteristic red colored buildings

The old Kennecott copper mill in the winter

The old Kennecott copper mill in the winter

The old Kennecott copper mill in the winter.  Kennecott was once a thriving mine and mill during the early 1900s. The mines are 5 miles up the mountain.

By
Alaska Science Center
The old Kennecott copper mill in the winter with the characteristic red colored buildings

The old Kennecott copper mill in the winter

The old Kennecott copper mill in the winter

The old Kennecott copper mill in the winter.  Kennecott was once a thriving mine and mill during the early 1900s. The mines are 5 miles up the mountain.

By
Alaska Science Center
The old Kennecott copper mill taken from the south with the characteristic red colored buildings
The old Kennecott copper mill and shop
The old Kennecott copper mill and shop
The old Kennecott copper mill taken from the south with the characteristic red colored buildings

The old Kennecott copper mill and shop

The old Kennecott copper mill and shop

The old Kennecott copper mill and shop.  The buildings are painted with red, characteristic for this mill. Kennecott was once a thriving mine and mill during the early 1900s. The mines are 5 miles up the mountain.

By
Alaska Science Center
The old Kennecott copper mill taken from the south with the characteristic red colored buildings

The old Kennecott copper mill and shop

The old Kennecott copper mill and shop

The old Kennecott copper mill and shop.  The buildings are painted with red, characteristic for this mill. Kennecott was once a thriving mine and mill during the early 1900s. The mines are 5 miles up the mountain.

By
Alaska Science Center
The old Kennecott copper mill from the north side with the characteristic red colored buildings
The old Kennecott copper mill from the north side
The old Kennecott copper mill from the north side
The old Kennecott copper mill from the north side with the characteristic red colored buildings

The old Kennecott copper mill from the north side

The old Kennecott copper mill from the north side

The old Kennecott copper mill from the north.  Kennecott was once a thriving mine and mill during the early 1900s. The mines are 5 miles up the mountain.

By
Alaska Science Center
The old Kennecott copper mill from the north side with the characteristic red colored buildings

The old Kennecott copper mill from the north side

The old Kennecott copper mill from the north side

The old Kennecott copper mill from the north.  Kennecott was once a thriving mine and mill during the early 1900s. The mines are 5 miles up the mountain.

By
Alaska Science Center
Filter Total Items: 112

The Lower Cretaceous sequence of western Alaska – demise of the Koyukuk terrane?

Lower Cretaceous marine sedimentary rocks, deposited in shallow shelf and basin settings and unconformity-bound, are well exposed in southwest Alaska. Collections of Early Cretaceous fossils from across western Alaska show that similar and coeval Lower Cretaceous clastic rocks are widely distributed though only locally exposed. Volcanic rocks become an important part of the Lower Cretaceous sequ
Authors
Travis L. Hudson, Robert Blodgett, Frederic H. Wilson
By
Alaska Science Center

Preliminary geologic map of the Greater Antilles and the Virgin Islands

IntroductionThis geologic map of the Greater Antilles and the Virgin Islands is a compilation of information from the literature, integrated to provide a seamless geologic map of the region. The geology shown on sheet 1 covers Cuba, the island of Hispaniola, which includes Haiti and the Dominican Republic, Jamaica, the Cayman Islands, Puerto Rico, and the U.S. and British Virgin Islands. A second
Authors
Frederic H. Wilson, Greta Orris, Floyd Gray
By
Energy and Minerals Mission Area, Ecosystems Mission Area, Alaska Science Center

Probabilistic mineral resource assessment of U.S. Territories of the Caribbean Basin and adjacent areas: Progress report

The U.S. Geological Survey is partnering with the IberoAmerican Association of Geological and Mining Surveys (ASGMI) to conduct an assessment of undiscovered metallic and non-metallic resources in the Greater Antilles region. The assessment plans to provide science-based information on the geologic availability of these resources for development, land-use planning, and decision making. The USGS an
Authors
Lukas Zürcher, Floyd Gray, Stephen Ludington, Frederic H. Wilson, Greta J. Orris, Mark D. Cocker, Mark E. Gettings, Timothy Hayes
By
Geology, Minerals, Energy, and Geophysics Science Center

Legacy K/Ar and 40Ar/39Ar geochronologic data from the Alaska-Aleutian Range batholith of south-central Alaska

Sample descriptions and analytical data for more than 200 K/Ar and 40Ar/39Ar analyses from rocks of the Alaska-Aleutian Range batholith of south-central Alaska are reported here. Samples were collected over a period of 20 years by Bruce R. Reed and Marvin A. Lanphere (both U.S. Geological Survey) as part of their studies of the batholith.
By
Groundwater and Streamflow Information Program, Mineral Resources Program, Alaska Science Center

Alaska geology revealed

This map shows the generalized geology of Alaska, which helps us to understand where potential mineral deposits and energy resources might be found, define ecosystems, and ultimately, teach us about the earth history of the State. Rock units are grouped in very broad categories on the basis of age and general rock type. A much more detailed and fully referenced presentation of the geology of Alask
Authors
Frederic H. Wilson, Keith A. Labay
By
Energy and Minerals Mission Area, Groundwater and Streamflow Information Program, Alaska Science Center

Mineral deposits and metallogeny of Alaska

Alaska, the largest State within the United States, and mainly located north of latitude 60°, is an important part of the Circum-Arctic region. Alaska is a richly endowed region with a long and complex geologic history. The mining history is short by world standards but nevertheless there are a number of world-class deposits in Alaska, of which Red Dog and Pebble are among the largest of their res
Authors
Richard J. Goldfarb, Corey J. Meighan, Lawrence D. Meinert, Frederic H. Wilson
By
Geology, Geophysics, and Geochemistry Science Center

Geologic framework of the Alaska Peninsula, southwest Alaska, and the Alaska Peninsula terrane

The Alaska Peninsula is composed of the late Paleozoic to Quaternary sedimentary, igneous, and minor metamorphic rocks that record the history of a number of magmatic arcs. These magmatic arcs include an unnamed Late Triassic(?) and Early Jurassic island arc, the early Cenozoic Meshik arc, and the late Cenozoic Aleutian arc. Also found on the Alaska Peninsula is one of the most complete nonmetamor
Authors
Frederic H. Wilson, Robert L. Detterman, Gregory D. DuBois
By
Energy and Minerals Mission Area, Ecosystems Mission Area, Mineral Resources Program, Alaska Science Center

Two flysch belts having distinctly different provenance suggest no stratigraphic link between the Wrangellia composite terrane and the paleo-Alaskan margin

The provenance of Jurassic to Cretaceous flysch along the northern boundary of the allochthonous Wrangellia composite terrane, exposed from the Lake Clark region of southwest Alaska to the Nutzotin Mountains in eastern Alaska, suggests that the flysch can be divided into two belts having different sources. On the north, the Kahiltna flysch and Kuskokwim Group overlie and were derived from the Farw
Authors
Chad P. Hults, Frederic H. Wilson, Raymond A. Donelick, Paul B. O'Sullivan
By
Ecosystems Mission Area, Alaska Science Center

Map showing extent of glaciation in the Eagle quadrangle, east-central Alaska

This map covers the Eagle 1:250,000-scale quadrangle in the northeastern part of the Yukon-Tanana Upland in Alaska. It shows the extent of five major glacial advances, former glacial lakes, and present fragmented terrace deposits related to the advances. The Yukon-Tanana Upland is an area of about 116,550 km2 between the Yukon and Tanana Rivers in east-central Alaska that extends into the western
Authors
Florence R. Weber, Frederic H. Wilson
By
Ecosystems Mission Area, Mineral Resources Program, Alaska Science Center

Geologic map of Saint Lawrence Island, Alaska

Saint Lawrence Island is located in the northern Bering Sea, 190 km southwest of the tip of the Seward Peninsula, Alaska, and 75 km southeast of the Chukotsk Peninsula, Russia (see index map, map sheet). It lies on a broad, shallow-water continental shelf that extends from western Alaska to northeastern Russia. The island is situated on a northwest-trending structural uplift exposing rocks as old
Authors
William W. Patton, Frederic H. Wilson, Theresa A. Taylor
By
Ecosystems Mission Area, Mineral Resources Program, Alaska Science Center

Preliminary Geologic Map of the Cook Inlet Region, Alaska-Including Parts of the Talkeetna, Talkeetna Mountains, Tyonek, Anchorage, Lake Clark, Kenai, Seward, Iliamna, Seldovia, Mount Katmai, and Afognak 1:250,000-scale Quadrangles

The growth in the use of Geographic Information Systems (GIS) has highlighted the need for digital geologic maps that have been attributed with information about age and lithology. Such maps can be conveniently used to generate derivative maps for manifold special purposes such as mineral-resource assessment, metallogenic studies, tectonic studies, and environmental research. This report is part o

Geologic and Geochronologic Studies of the Early Proterozoic Kanektok Metamorphic Complex of Southwestern Alaska

The Kanektok complex of southwestern Alaska appears to be a rootless terrane of early Proterozoic sedimentary, volcanic, and intrusive rocks which were metamorphosed to amphibolite and granulite facies and later underwent a pervasive late Mesozoic thermal event accompanied by granitic plutonism and greenschist facies metamorphism of overlying sediments. The terrane is structurally complex and exhi
Authors
Donald L. Turner, Robert B. Forbes, John N. Aleinikoff, Ian McDougall, Carl E. Hedge, Frederic H. Wilson, Paul W. Layer, Chad P. Hults
By
Ecosystems Mission Area, Alaska Science Center

Geologic Map of Alaska

This is an interactive version of the Alaska geologic map database which allows a user to view and access many features of the database and map through a standard web browser. In other words, there is no need for or knowledge of specialized GIS software.

By
Alaska Science Center
Celebrating Black History: Meet Ric Wilson, A Pioneer of Alaskan Geo-Mapping

Celebrating Black History: Meet Ric Wilson, A Pioneer of Alaskan Geo-Mapping

Growing up beneath the towering steel structures of Chicago, Ric Wilson was fascinated with how things worked.   

Read Article
First Ever Digital Geologic Map of Alaska Published

First Ever Digital Geologic Map of Alaska Published

ANCHORAGE, Alaska – A new digital geologic map of Alaska is being released today providing land users, managers and scientists geologic information...

Read Article

Science and Products

link
Alaska Resource Data File quadrangle map

Alaska Resource Data File

The Alaska Resource Data File (ARDF) site provides descriptions of mines, prospects, and mineral occurrences for individual U.S. Geological Survey 1:250,000-scale quadrangles in Alaska.
By
Mineral Resources Program, Alaska Science Center
link

Alaska Resource Data File

The Alaska Resource Data File (ARDF) site provides descriptions of mines, prospects, and mineral occurrences for individual U.S. Geological Survey 1:250,000-scale quadrangles in Alaska.
Learn More
link
Alaska geology map revealed

Alaska Databases and Information Analysis

We provide GIS and database support for Alaska-based research projects, including database design, data capture, and maintenance, GIS analysis and display, and production of datasets and metadata for publication and data releases.
By
Mineral Resources Program, National Cooperative Geologic Mapping Program, Alaska Science Center
link

Alaska Databases and Information Analysis

We provide GIS and database support for Alaska-based research projects, including database design, data capture, and maintenance, GIS analysis and display, and production of datasets and metadata for publication and data releases.
Learn More
link
Map of Alaska with multiple colors throughout the state representative areas of different geology.

Geologic Map of Alaska

In January 2016, the U.S. Geological Survey released the first ever digital geologic map of Alaska. This map reflects more than a century of work and provides a visual context for the abundant mineral and energy resources found throughout the state. The map also is available to use in three different formats: a professional GIS database, a public interactive version via a web browser, and an...
By
Mineral Resources Program, National Cooperative Geologic Mapping Program, Alaska Science Center, Earth Mapping Resources Initiative (Earth MRI)
link

Geologic Map of Alaska

In January 2016, the U.S. Geological Survey released the first ever digital geologic map of Alaska. This map reflects more than a century of work and provides a visual context for the abundant mineral and energy resources found throughout the state. The map also is available to use in three different formats: a professional GIS database, a public interactive version via a web browser, and an...
Learn More

U-Pb Isotope Geochronology Data and Geochemical Analyses of Selected Rocks from the Seldovia Quadrangle, Southcentral Alaska

This dataset contains U-Pb isotopic data and associated ages of zircons within the lithologic framework of igneous, metaigneous, and metasedimentary rocks collected from the Seldovia quadrangle in southcentral Alaska. The samples were collected as part of geological mapping and research conducted from 2020 to 2023 and funded by the Mineral Resources Program of the U.S. Geological Survey. Zircon gr
By
Alaska Science Center

Alaska Resource Data File (ARDF)

The Alaska Resource Data File (ARDF) is a database of mines, prospects, and mineral occurrences in Alaska. It contains information compiled from published and unpublished sources from industry, U.S. Bureau of Mines (BOM), U.S. Geological Survey (USGS), and other government and private sources. ARDF is not a mining claims database.
By
Alaska Science Center

Geochemical and 40Ar/39Ar Analytical Data of Rocks from Glacier Bay National Park and Preserve

This data set contains major and trace element geochemical data and 40Ar/39Ar isotopic data and ages for rock samples collected during 2016 fieldwork in Glacier Bay National Park and Preserve. The plutonic rock samples were collected for radiometric age determinations to test for the presence of the Late Jurassic to Early Cretaceous (130-160 Ma) Saint Elias suite. The age analyses indicate that al
By
Alaska Science Center

U-Pb zircon data for: Cretaceous plutonic rocks of western Glacier Bay National Park and Preserve

In 2016, with National Park Service support, several previously undated plutons were sampled in Glacier Bay National Park and Preserve along the west side of Glacier Bay for age determinations. Geochronologic analyses were conducted to determine the ages of the plutonic rocks in the Glacier Bay area. Five samples were collected by Frederic Wilson (USGS Alaska Science Center), from Dundas Bay and G
By
Mineral Resources Program, Alaska Science Center, Geology, Geophysics, and Geochemistry Science Center
Filter Total Items: 26

Bedrock geologic map of the 15' Sleetmute A-2 quadrangle, southwestern Alaska

Twelve unnamed, bedrock stratigraphic units are recognized within the Sleetmute A-2 1:63,360-scale quadrangle of southwestern Alaska. These units range in age from late(?) Proterozoic through Devonian and can be divided into two distinct facies belts: (1) a southern facies of dominantly shallow-water platform carbonate and minor siliciclastic rocks (including Early Ordovician–Early Devonian platfo
By
Alaska Science Center

Surficial geologic map of the Dillingham quadrangle, southwestern Alaska

The geologic map of the Dillingham quadrangle in southwestern Alaska shows surficial unconsolidated deposits, many of which are alluvial or glacial in nature. The map area, part of Alaska that was largely not glaciated during the late Wisconsin glaciation, has a long history reflecting local and more distant glaciations. Late Wisconsin glacial deposits have limited extent in the eastern part of th
By
Energy and Minerals Mission Area, Ecosystems Mission Area, Alaska Science Center

Reconnaissance surficial geologic map of the Taylor Mountains quadrangle, southwestern Alaska

This map and accompanying digital files are the result of the interpretation of aerial photographs from the 1950s as well as more modern imagery. The area, long considered a part of Alaska that was largely not glaciated (see Karlstrom, 1964; Coulter and others, 1965; or Péwé, 1975), actually has a long history reflecting local and more distant glaciations. An unpublished photogeologic map of the T
By
Groundwater and Streamflow Information Program, Mineral Resources Program, Alaska Science Center

Geologic map of Alaska

Summary This map and associated digital databases are the result of compilation and interpretation of published and unpublished 1:250,000-scale and limited 1:500,000- to 1:63,360-scale maps. Covering the entire state of Alaska, it reflects more than a century of work by a host of geologists and almost two decades of compilation work. There are two versions of the map: a detailed digital version, a
By
Energy and Minerals Mission Area, Ecosystems Mission Area, Mineral Resources Program, Alaska Science Center, Earth Mapping Resources Initiative (Earth MRI)

Reconnaissance geologic map of the Kuskokwim Bay region, southwest Alaska

The rocks of the map area range from Proterozoic age metamorphic rocks of the Kanektok metamorphic complex (Kilbuck terrane) to Quaternary age mafic volcanic rocks of Nunivak Island. The map area encompasses much of the type area of the Togiak-Tikchik Complex. The geologic maps used to construct this compilation were, for the most part, reconnaissance studies done in the time period from the 1950s

By
Ecosystems Mission Area, Mineral Resources Program, Alaska Science Center

Reconnaissance geologic map of Kodiak Island and adjacent islands, Alaska

Kodiak Island and its adjacent islands, located on the west side of the Gulf of Alaska, contain one of the largest areas of exposure of the flysch and melange of the Chugach terrane of southern Alaska. However, in the past 25 years, only detailed mapping covering small areas in the archipelago has been done. This map and its associated digital files (Wilson and others, 2005) present the best avail
By
Ecosystems Mission Area, Mineral Resources Program, Alaska Science Center

Geologic map of the Cook Inlet region, Alaska, including parts of the Talkeetna, Talkeetna Mountains, Tyonek, Anchorage, Lake Clark, Kenai, Seward, Iliamna, Seldovia, Mount Katmai, and Afognak 1:250,000-scale quadrangles

In 1976, L.B. Magoon, W.L. Adkinson, and R.M. Egbert published a major geologic map of the Cook Inlet region, which has served well as a compilation of existing information and a guide for future research and mapping. The map in this report updates Magoon and others (1976) and incorporates new and additional mapping and interpretation. This map is also a revision of areas of overlap with the geolo
By
Ecosystems Mission Area, Mineral Resources Program, Alaska Science Center

Geology of the Prince William Sound and Kenai Peninsula region, Alaska: Including the Kenai, Seldovia, Blying Sound, Cordova, and Middleton Island 1:250,000-scale quadrangles

The Prince William Sound and Kenai Peninsula region includes a significant part of one of the world’s largest accretionary complexes and a small part of the classic magmatic arc geology of the Alaska Peninsula. Physiographically, the map area ranges from the high glaciated mountains of the Alaska and Aleutian Ranges and the Chugach Mountains to the coastal lowlands of Cook Inlet and the Copper Riv

By
Ecosystems Mission Area, Mineral Resources Program, Alaska Science Center

Geologic Map of the Yukon-Koyukuk Basin, Alaska

This map and accompanying digital files represent part of a systematic effort to release geologic data for the United States in a uniform manner. All the geologic data in this series will be published as parts of the U.S. Geological Survey Data Series. The geologic data in this series have been compiled from a wide variety of sources, ranging from state and regional geologic maps to large-scale fi
By
Ecosystems Mission Area, Alaska Science Center

World heritage site - Bien du Patrimoine Mondial - Kluane/Wrangell-St. Elias/Glacier Bay/Tatshenshini-Alsek

The four parks depicted on this map make up a single World Heritage Site that covers 24.3 million acres. Together, they comprise the largest internationally protected land-based ecosystem on the planet. The United Nations Educational, Scientific and Cultural Organization (UNESCO) established the World Heritage Program in 1972 for the identification and protection of the world?s irreplaceable natur

Maps showing the resource assessment of the Port Moller, Stepovak Bay, and Simeonof Island quadrangles, Alaska Peninsula with a section on geology of the Pyramid porphyry copper deposit, Alaska Peninsula, Alaska

No abstract available.
By
Ecosystems Mission Area, Alaska Science Center

Geologic map of Port Moller, Stepovak Bay, and Simeonof Island quadrangles, Alaska Peninsula, Alaska

Geologic mapping of Port Moller, Stevopak Bay, and Simeonof Island 1° by 2° quadrangles on the Alaska Peninsula was conducted as part of the Alaska Mineral Resource Assessment Program (AMRAP). Geologic observations was obtained by using helicopter overflights, vertical aerial photography, and enhanced and extensively processed Landsat imagery (York and others, 1984; Wilson and York, 1985). Helicop
By
Ecosystems Mission Area, Alaska Science Center
The old Kennecott copper mill in the winter with the characteristic red colored buildings
The old Kennecott copper mill in the winter
The old Kennecott copper mill in the winter
The old Kennecott copper mill in the winter with the characteristic red colored buildings

The old Kennecott copper mill in the winter

The old Kennecott copper mill in the winter

The old Kennecott copper mill in the winter.  Kennecott was once a thriving mine and mill during the early 1900s. The mines are 5 miles up the mountain.

By
Alaska Science Center
The old Kennecott copper mill in the winter with the characteristic red colored buildings

The old Kennecott copper mill in the winter

The old Kennecott copper mill in the winter

The old Kennecott copper mill in the winter.  Kennecott was once a thriving mine and mill during the early 1900s. The mines are 5 miles up the mountain.

By
Alaska Science Center
The old Kennecott copper mill taken from the south with the characteristic red colored buildings
The old Kennecott copper mill and shop
The old Kennecott copper mill and shop
The old Kennecott copper mill taken from the south with the characteristic red colored buildings

The old Kennecott copper mill and shop

The old Kennecott copper mill and shop

The old Kennecott copper mill and shop.  The buildings are painted with red, characteristic for this mill. Kennecott was once a thriving mine and mill during the early 1900s. The mines are 5 miles up the mountain.

By
Alaska Science Center
The old Kennecott copper mill taken from the south with the characteristic red colored buildings

The old Kennecott copper mill and shop

The old Kennecott copper mill and shop

The old Kennecott copper mill and shop.  The buildings are painted with red, characteristic for this mill. Kennecott was once a thriving mine and mill during the early 1900s. The mines are 5 miles up the mountain.

By
Alaska Science Center
The old Kennecott copper mill from the north side with the characteristic red colored buildings
The old Kennecott copper mill from the north side
The old Kennecott copper mill from the north side
The old Kennecott copper mill from the north side with the characteristic red colored buildings

The old Kennecott copper mill from the north side

The old Kennecott copper mill from the north side

The old Kennecott copper mill from the north.  Kennecott was once a thriving mine and mill during the early 1900s. The mines are 5 miles up the mountain.

By
Alaska Science Center
The old Kennecott copper mill from the north side with the characteristic red colored buildings

The old Kennecott copper mill from the north side

The old Kennecott copper mill from the north side

The old Kennecott copper mill from the north.  Kennecott was once a thriving mine and mill during the early 1900s. The mines are 5 miles up the mountain.

By
Alaska Science Center
Filter Total Items: 112

The Lower Cretaceous sequence of western Alaska – demise of the Koyukuk terrane?

Lower Cretaceous marine sedimentary rocks, deposited in shallow shelf and basin settings and unconformity-bound, are well exposed in southwest Alaska. Collections of Early Cretaceous fossils from across western Alaska show that similar and coeval Lower Cretaceous clastic rocks are widely distributed though only locally exposed. Volcanic rocks become an important part of the Lower Cretaceous sequ
Authors
Travis L. Hudson, Robert Blodgett, Frederic H. Wilson
By
Alaska Science Center

Preliminary geologic map of the Greater Antilles and the Virgin Islands

IntroductionThis geologic map of the Greater Antilles and the Virgin Islands is a compilation of information from the literature, integrated to provide a seamless geologic map of the region. The geology shown on sheet 1 covers Cuba, the island of Hispaniola, which includes Haiti and the Dominican Republic, Jamaica, the Cayman Islands, Puerto Rico, and the U.S. and British Virgin Islands. A second
Authors
Frederic H. Wilson, Greta Orris, Floyd Gray
By
Energy and Minerals Mission Area, Ecosystems Mission Area, Alaska Science Center

Probabilistic mineral resource assessment of U.S. Territories of the Caribbean Basin and adjacent areas: Progress report

The U.S. Geological Survey is partnering with the IberoAmerican Association of Geological and Mining Surveys (ASGMI) to conduct an assessment of undiscovered metallic and non-metallic resources in the Greater Antilles region. The assessment plans to provide science-based information on the geologic availability of these resources for development, land-use planning, and decision making. The USGS an
Authors
Lukas Zürcher, Floyd Gray, Stephen Ludington, Frederic H. Wilson, Greta J. Orris, Mark D. Cocker, Mark E. Gettings, Timothy Hayes
By
Geology, Minerals, Energy, and Geophysics Science Center

Legacy K/Ar and 40Ar/39Ar geochronologic data from the Alaska-Aleutian Range batholith of south-central Alaska

Sample descriptions and analytical data for more than 200 K/Ar and 40Ar/39Ar analyses from rocks of the Alaska-Aleutian Range batholith of south-central Alaska are reported here. Samples were collected over a period of 20 years by Bruce R. Reed and Marvin A. Lanphere (both U.S. Geological Survey) as part of their studies of the batholith.
By
Groundwater and Streamflow Information Program, Mineral Resources Program, Alaska Science Center

Alaska geology revealed

This map shows the generalized geology of Alaska, which helps us to understand where potential mineral deposits and energy resources might be found, define ecosystems, and ultimately, teach us about the earth history of the State. Rock units are grouped in very broad categories on the basis of age and general rock type. A much more detailed and fully referenced presentation of the geology of Alask
Authors
Frederic H. Wilson, Keith A. Labay
By
Energy and Minerals Mission Area, Groundwater and Streamflow Information Program, Alaska Science Center

Mineral deposits and metallogeny of Alaska

Alaska, the largest State within the United States, and mainly located north of latitude 60°, is an important part of the Circum-Arctic region. Alaska is a richly endowed region with a long and complex geologic history. The mining history is short by world standards but nevertheless there are a number of world-class deposits in Alaska, of which Red Dog and Pebble are among the largest of their res
Authors
Richard J. Goldfarb, Corey J. Meighan, Lawrence D. Meinert, Frederic H. Wilson
By
Geology, Geophysics, and Geochemistry Science Center

Geologic framework of the Alaska Peninsula, southwest Alaska, and the Alaska Peninsula terrane

The Alaska Peninsula is composed of the late Paleozoic to Quaternary sedimentary, igneous, and minor metamorphic rocks that record the history of a number of magmatic arcs. These magmatic arcs include an unnamed Late Triassic(?) and Early Jurassic island arc, the early Cenozoic Meshik arc, and the late Cenozoic Aleutian arc. Also found on the Alaska Peninsula is one of the most complete nonmetamor
Authors
Frederic H. Wilson, Robert L. Detterman, Gregory D. DuBois
By
Energy and Minerals Mission Area, Ecosystems Mission Area, Mineral Resources Program, Alaska Science Center

Two flysch belts having distinctly different provenance suggest no stratigraphic link between the Wrangellia composite terrane and the paleo-Alaskan margin

The provenance of Jurassic to Cretaceous flysch along the northern boundary of the allochthonous Wrangellia composite terrane, exposed from the Lake Clark region of southwest Alaska to the Nutzotin Mountains in eastern Alaska, suggests that the flysch can be divided into two belts having different sources. On the north, the Kahiltna flysch and Kuskokwim Group overlie and were derived from the Farw
Authors
Chad P. Hults, Frederic H. Wilson, Raymond A. Donelick, Paul B. O'Sullivan
By
Ecosystems Mission Area, Alaska Science Center

Map showing extent of glaciation in the Eagle quadrangle, east-central Alaska

This map covers the Eagle 1:250,000-scale quadrangle in the northeastern part of the Yukon-Tanana Upland in Alaska. It shows the extent of five major glacial advances, former glacial lakes, and present fragmented terrace deposits related to the advances. The Yukon-Tanana Upland is an area of about 116,550 km2 between the Yukon and Tanana Rivers in east-central Alaska that extends into the western
Authors
Florence R. Weber, Frederic H. Wilson
By
Ecosystems Mission Area, Mineral Resources Program, Alaska Science Center

Geologic map of Saint Lawrence Island, Alaska

Saint Lawrence Island is located in the northern Bering Sea, 190 km southwest of the tip of the Seward Peninsula, Alaska, and 75 km southeast of the Chukotsk Peninsula, Russia (see index map, map sheet). It lies on a broad, shallow-water continental shelf that extends from western Alaska to northeastern Russia. The island is situated on a northwest-trending structural uplift exposing rocks as old
Authors
William W. Patton, Frederic H. Wilson, Theresa A. Taylor
By
Ecosystems Mission Area, Mineral Resources Program, Alaska Science Center

Preliminary Geologic Map of the Cook Inlet Region, Alaska-Including Parts of the Talkeetna, Talkeetna Mountains, Tyonek, Anchorage, Lake Clark, Kenai, Seward, Iliamna, Seldovia, Mount Katmai, and Afognak 1:250,000-scale Quadrangles

The growth in the use of Geographic Information Systems (GIS) has highlighted the need for digital geologic maps that have been attributed with information about age and lithology. Such maps can be conveniently used to generate derivative maps for manifold special purposes such as mineral-resource assessment, metallogenic studies, tectonic studies, and environmental research. This report is part o

Geologic and Geochronologic Studies of the Early Proterozoic Kanektok Metamorphic Complex of Southwestern Alaska

The Kanektok complex of southwestern Alaska appears to be a rootless terrane of early Proterozoic sedimentary, volcanic, and intrusive rocks which were metamorphosed to amphibolite and granulite facies and later underwent a pervasive late Mesozoic thermal event accompanied by granitic plutonism and greenschist facies metamorphism of overlying sediments. The terrane is structurally complex and exhi
Authors
Donald L. Turner, Robert B. Forbes, John N. Aleinikoff, Ian McDougall, Carl E. Hedge, Frederic H. Wilson, Paul W. Layer, Chad P. Hults
By
Ecosystems Mission Area, Alaska Science Center

Geologic Map of Alaska

This is an interactive version of the Alaska geologic map database which allows a user to view and access many features of the database and map through a standard web browser. In other words, there is no need for or knowledge of specialized GIS software.

By
Alaska Science Center
Celebrating Black History: Meet Ric Wilson, A Pioneer of Alaskan Geo-Mapping

Celebrating Black History: Meet Ric Wilson, A Pioneer of Alaskan Geo-Mapping

Growing up beneath the towering steel structures of Chicago, Ric Wilson was fascinated with how things worked.   

Read Article
First Ever Digital Geologic Map of Alaska Published

First Ever Digital Geologic Map of Alaska Published

ANCHORAGE, Alaska – A new digital geologic map of Alaska is being released today providing land users, managers and scientists geologic information...

Read Article
Was this page helpful?