A USGS scientist is recording structural measurements collected from an outcrop of deformed and metamorphosed bedrock in the Yukon-Tanana upland of eastern interior Alaska. A team of two geologists were deployed by helicopter to conduct a geologic mapping and sampling traverse covering approximately 5 miles along the top of this ridge.
Jamey Jones
Jamey is the USGS Earth MRI Coordinator.
His research is focused on the bedrock geology, tectonic evolution, and mineral resources of Alaska and western North America. He specializes in field geology, structural geology, metamorphic petrology, and U-Pb geochronology. USGS areas of focus include the Mineral Resources Program and the National Cooperative Mapping Program. Past and ongoing projects are also focused on the Precambrian tectonic evolution of the southwestern United States.
Science and Products
Alaska Earth Mapping Resources Initiative (Earth MRI)
Our objective is to provide a strategic framework for planning, coordination, and execution of the USGS Earth Mapping Resources Initiative (Earth MRI) in Alaska. Earth MRI aims to improve knowledge of the U.S. geologic framework through new geological and geophysical mapping and to identify areas that have the potential to contain undiscovered critical mineral resources.
Earth Mapping Resources Initiative (Earth MRI)
The goal of Earth MRI is to improve our knowledge of the geologic framework in the United States and to identify areas that may have the potential to contain undiscovered critical mineral resources. Enhancement of our domestic mineral supply will decrease the Nation’s reliance on foreign sources of minerals that are fundamental to our security and economy.
Tectonic and Metallogenic Evolution of the Yukon-Tanana Upland, Alaska
The Yukon-Tanana upland in eastern interior Alaska is a geologically complex block containing deposits of base-metal, platinum-group-element, and gold-silver-copper mineralization. It also hosts numerous mineral systems that are known or suspected to contain critical minerals.
Metallogeny and Tectonics of the Lake Clark and Neacola Mountains Region, South-central Alaska
Alaska hosts a well-documented belt of ore deposits that lies roughly parallel to the Alaska Range, beginning at the Alaska Peninsula in the southwest, continuing up through the Fairbanks Mining District in the north, and curving back into the Tintina Gold Belt on its eastern end. Known mineral prospects and occurrences include porphyry copper, intrusion-related gold, volcanogenic massive sulfides...
Geologic mapping in remote interior Alaska
A USGS scientist is recording structural measurements collected from an outcrop of deformed and metamorphosed bedrock in the Yukon-Tanana upland of eastern interior Alaska. A team of two geologists were deployed by helicopter to conduct a geologic mapping and sampling traverse covering approximately 5 miles along the top of this ridge.
Helicopter landing to pick up field personnel in Alaska
Helicopter landing to pick up field personnel after a day of geologic mapping and sampling in the Fortymile region north of Tok, Alaska.
Helicopter landing to pick up field personnel after a day of geologic mapping and sampling in the Fortymile region north of Tok, Alaska.
Scientist examining strongly deformed and metamorphosed rock outcrops
USGS scientist examining outcrops of strongly deformed and metamorphosed rock along Divide Mountain in the Yukon-Tanana upland of eastern Alaska
USGS scientist examining outcrops of strongly deformed and metamorphosed rock along Divide Mountain in the Yukon-Tanana upland of eastern Alaska
Quartz veins across outcrops of granitic gneiss on Divide Mt., Alaska
Half-meter-thick quartz veins cut across outcrops of granitic gneiss on Divide Mountain along the Alaska-Yukon border, August 2015
Half-meter-thick quartz veins cut across outcrops of granitic gneiss on Divide Mountain along the Alaska-Yukon border, August 2015
Electromagnetic measurements of the Earth’s crust in Alaska
A scientist and the helicopter pilot work together to install geophysical instrumentation in a remote region west of the Neacola Mountains, south-central Alaska. An array of cables were buried in shallow trenches for up to 48 hours to measure the electrical conductivity of the bedrock at that location.
A scientist and the helicopter pilot work together to install geophysical instrumentation in a remote region west of the Neacola Mountains, south-central Alaska. An array of cables were buried in shallow trenches for up to 48 hours to measure the electrical conductivity of the bedrock at that location.
Installing geophysical equipment northwest of Lake Clark Natl Park
USGS scientist Beth Burton and helicopter pilot Drew Rose install geophysical equipment northwest of Lake Clark National Park, Alaska
USGS scientist Beth Burton and helicopter pilot Drew Rose install geophysical equipment northwest of Lake Clark National Park, Alaska
Geologist checks a granitic rock before geochemistry and geochronology
USGS geologist Erin Todd examines granitic rocks in outcrop before collecting samples for geochemistry and geochronology in Lake Clark National Park, Alaska.
USGS geologist Erin Todd examines granitic rocks in outcrop before collecting samples for geochemistry and geochronology in Lake Clark National Park, Alaska.
Panoramic view of Chakachamma Lake near Lake Clark, Alaska
Panoramic view of entrance to Chakachamma Lake (near Lake Clark, Alaska).
Panoramic view of entrance to Chakachamma Lake (near Lake Clark, Alaska).
Blockade Glacier
USGS geologist Richard Lease collects samples of granitic bedrock high above Blockade glacier, Neacola Mountains, Alaska.
USGS geologist Richard Lease collects samples of granitic bedrock high above Blockade glacier, Neacola Mountains, Alaska.
Scientists wait for a helicopter pickup in the Neacola Mountains
USGS scientists Erin Todd and Jonathan Caine wait for a helicopter pickup at a geologic mapping and sampling station high in the Neacola Mountains, Alaska.
USGS scientists Erin Todd and Jonathan Caine wait for a helicopter pickup at a geologic mapping and sampling station high in the Neacola Mountains, Alaska.
Helicopter arriving to move geologists from Redoubt Volcano, Alaska
Helicopter arriving to pick up geologists after retrieving geophysical equipment from the flanks of Redoubt Volcano, Alaska, July 2015
Helicopter arriving to pick up geologists after retrieving geophysical equipment from the flanks of Redoubt Volcano, Alaska, July 2015
Alaska geologic mapping by helicopter
A helicopter waiting to pick up geologic mappers and move them to a new location in the western Alaska Range in south-central Alaska. Helicopters are an essential part of geologic fieldwork in the many remote, rugged regions of Alaska.
A helicopter waiting to pick up geologic mappers and move them to a new location in the western Alaska Range in south-central Alaska. Helicopters are an essential part of geologic fieldwork in the many remote, rugged regions of Alaska.
Science and Products
Alaska Earth Mapping Resources Initiative (Earth MRI)
Our objective is to provide a strategic framework for planning, coordination, and execution of the USGS Earth Mapping Resources Initiative (Earth MRI) in Alaska. Earth MRI aims to improve knowledge of the U.S. geologic framework through new geological and geophysical mapping and to identify areas that have the potential to contain undiscovered critical mineral resources.
Earth Mapping Resources Initiative (Earth MRI)
The goal of Earth MRI is to improve our knowledge of the geologic framework in the United States and to identify areas that may have the potential to contain undiscovered critical mineral resources. Enhancement of our domestic mineral supply will decrease the Nation’s reliance on foreign sources of minerals that are fundamental to our security and economy.
Tectonic and Metallogenic Evolution of the Yukon-Tanana Upland, Alaska
The Yukon-Tanana upland in eastern interior Alaska is a geologically complex block containing deposits of base-metal, platinum-group-element, and gold-silver-copper mineralization. It also hosts numerous mineral systems that are known or suspected to contain critical minerals.
Metallogeny and Tectonics of the Lake Clark and Neacola Mountains Region, South-central Alaska
Alaska hosts a well-documented belt of ore deposits that lies roughly parallel to the Alaska Range, beginning at the Alaska Peninsula in the southwest, continuing up through the Fairbanks Mining District in the north, and curving back into the Tintina Gold Belt on its eastern end. Known mineral prospects and occurrences include porphyry copper, intrusion-related gold, volcanogenic massive sulfides...
Geologic mapping in remote interior Alaska
A USGS scientist is recording structural measurements collected from an outcrop of deformed and metamorphosed bedrock in the Yukon-Tanana upland of eastern interior Alaska. A team of two geologists were deployed by helicopter to conduct a geologic mapping and sampling traverse covering approximately 5 miles along the top of this ridge.
A USGS scientist is recording structural measurements collected from an outcrop of deformed and metamorphosed bedrock in the Yukon-Tanana upland of eastern interior Alaska. A team of two geologists were deployed by helicopter to conduct a geologic mapping and sampling traverse covering approximately 5 miles along the top of this ridge.
Helicopter landing to pick up field personnel in Alaska
Helicopter landing to pick up field personnel after a day of geologic mapping and sampling in the Fortymile region north of Tok, Alaska.
Helicopter landing to pick up field personnel after a day of geologic mapping and sampling in the Fortymile region north of Tok, Alaska.
Scientist examining strongly deformed and metamorphosed rock outcrops
USGS scientist examining outcrops of strongly deformed and metamorphosed rock along Divide Mountain in the Yukon-Tanana upland of eastern Alaska
USGS scientist examining outcrops of strongly deformed and metamorphosed rock along Divide Mountain in the Yukon-Tanana upland of eastern Alaska
Quartz veins across outcrops of granitic gneiss on Divide Mt., Alaska
Half-meter-thick quartz veins cut across outcrops of granitic gneiss on Divide Mountain along the Alaska-Yukon border, August 2015
Half-meter-thick quartz veins cut across outcrops of granitic gneiss on Divide Mountain along the Alaska-Yukon border, August 2015
Electromagnetic measurements of the Earth’s crust in Alaska
A scientist and the helicopter pilot work together to install geophysical instrumentation in a remote region west of the Neacola Mountains, south-central Alaska. An array of cables were buried in shallow trenches for up to 48 hours to measure the electrical conductivity of the bedrock at that location.
A scientist and the helicopter pilot work together to install geophysical instrumentation in a remote region west of the Neacola Mountains, south-central Alaska. An array of cables were buried in shallow trenches for up to 48 hours to measure the electrical conductivity of the bedrock at that location.
Installing geophysical equipment northwest of Lake Clark Natl Park
USGS scientist Beth Burton and helicopter pilot Drew Rose install geophysical equipment northwest of Lake Clark National Park, Alaska
USGS scientist Beth Burton and helicopter pilot Drew Rose install geophysical equipment northwest of Lake Clark National Park, Alaska
Geologist checks a granitic rock before geochemistry and geochronology
USGS geologist Erin Todd examines granitic rocks in outcrop before collecting samples for geochemistry and geochronology in Lake Clark National Park, Alaska.
USGS geologist Erin Todd examines granitic rocks in outcrop before collecting samples for geochemistry and geochronology in Lake Clark National Park, Alaska.
Panoramic view of Chakachamma Lake near Lake Clark, Alaska
Panoramic view of entrance to Chakachamma Lake (near Lake Clark, Alaska).
Panoramic view of entrance to Chakachamma Lake (near Lake Clark, Alaska).
Blockade Glacier
USGS geologist Richard Lease collects samples of granitic bedrock high above Blockade glacier, Neacola Mountains, Alaska.
USGS geologist Richard Lease collects samples of granitic bedrock high above Blockade glacier, Neacola Mountains, Alaska.
Scientists wait for a helicopter pickup in the Neacola Mountains
USGS scientists Erin Todd and Jonathan Caine wait for a helicopter pickup at a geologic mapping and sampling station high in the Neacola Mountains, Alaska.
USGS scientists Erin Todd and Jonathan Caine wait for a helicopter pickup at a geologic mapping and sampling station high in the Neacola Mountains, Alaska.
Helicopter arriving to move geologists from Redoubt Volcano, Alaska
Helicopter arriving to pick up geologists after retrieving geophysical equipment from the flanks of Redoubt Volcano, Alaska, July 2015
Helicopter arriving to pick up geologists after retrieving geophysical equipment from the flanks of Redoubt Volcano, Alaska, July 2015
Alaska geologic mapping by helicopter
A helicopter waiting to pick up geologic mappers and move them to a new location in the western Alaska Range in south-central Alaska. Helicopters are an essential part of geologic fieldwork in the many remote, rugged regions of Alaska.
A helicopter waiting to pick up geologic mappers and move them to a new location in the western Alaska Range in south-central Alaska. Helicopters are an essential part of geologic fieldwork in the many remote, rugged regions of Alaska.