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Carol A Finn, Ph.D. (Former Employee)

Science and Products

Image Collage of Landsat, pollinator, and volcanologist

Large Magmatic Systems for Minerals

This project continues work on large magmatic systems in the U.S., where critical mineral commodities important to clean energy technologies can be concentrated. Modeling of large mafic intrusion extents will continue, and new geophysical methods will be applied to improve understanding of magmatic systems.
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center, Geology, Minerals, Energy, and Geophysics Science Center
Large Magmatic Systems for Minerals

Large Magmatic Systems for Minerals

This project continues work on large magmatic systems in the U.S., where critical mineral commodities important to clean energy technologies can be concentrated. Modeling of large mafic intrusion extents will continue, and new geophysical methods will be applied to improve understanding of magmatic systems.
Learn More
Satellite map view of world with four countries highlighted in green.

Integrated Interpretation of International Mineral Resource Assessment Data

We will publish reports and interpretive papers on existing data from USGS internal mineral resource assessment collaborative work.
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center
Integrated Interpretation of International Mineral Resource Assessment Data

Integrated Interpretation of International Mineral Resource Assessment Data

We will publish reports and interpretive papers on existing data from USGS internal mineral resource assessment collaborative work.
Learn More
Stillwater River canyon with mine

Geophysical Studies on the Architecture of Large Igneous Systems Hosting Magmatic Ore Deposits

Platinum group elements, also known as PGEs, are a group of elements that have specific properties which make them useful for various applications in industry. One geologic setting that contains large concentrations of platinum group elements is layered mafic intrusions. This project will use new and preexisting geophysical datasets to characterize the internal structure of layered intrusions...
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center, Geology, Minerals, Energy, and Geophysics Science Center
Geophysical Studies on the Architecture of Large Igneous Systems Hosting Magmatic Ore Deposits

Geophysical Studies on the Architecture of Large Igneous Systems Hosting Magmatic Ore Deposits

Platinum group elements, also known as PGEs, are a group of elements that have specific properties which make them useful for various applications in industry. One geologic setting that contains large concentrations of platinum group elements is layered mafic intrusions. This project will use new and preexisting geophysical datasets to characterize the internal structure of layered intrusions...
Learn More

Surface geophysical data from Ollalie North springs, west-central Oregon Surface geophysical data from Ollalie North springs, west-central Oregon

Surface electrical resistivity tomography (ERT) data were collected in September of 2018 near Ollalie North springs in the upper McKenzie River watershed of west-central Oregon. ERT data were acquired along a single transect on the north bank of Ollalie Creek using a combination of inverse Schlumberger, dipole-dipole, and Wenner arrays. These data were collected to contribute high...
By
Geology, Geophysics, and Geochemistry Science Center

Airborne Electromagnetic Survey Processed Data and Models Data Release, Yellowstone National Park, Wyoming, 2016 Airborne Electromagnetic Survey Processed Data and Models Data Release, Yellowstone National Park, Wyoming, 2016

Airborne electromagnetic (AEM) and magnetic survey data were collected during November and December 2016 along 4,212 line-kilometers over Yellowstone National Park, Wyoming. The survey was conducted as part of a study of the subsurface geologic structure and geothermal and groundwater resources of Yellowstone National Park. The survey was designed to image the subsurface plumbing of...
By
Geology, Geophysics, and Geochemistry Science Center

Principal facts of gravity data from the Stillwater Complex, Montana, 2013-2014 and 2020 Principal facts of gravity data from the Stillwater Complex, Montana, 2013-2014 and 2020

Gravity data were collected during three separate campaigns during July of 2013, August and September of 2014, and September and October of 2020 at 168 sites on and around the Stillwater layered mafic complex in southern Montana. Measurements were taken with Lacoste & Romberg G-64, G-550, and G-161 gravimeters and reduced to obtain the complete Bouguer anomaly, with reference ties to...
By
Geology, Geophysics, and Geochemistry Science Center

Mount Baker and Mount Adams Airborne Magnetic and Electromagnetic Survey Data, August 2002, Washington, USA Mount Baker and Mount Adams Airborne Magnetic and Electromagnetic Survey Data, August 2002, Washington, USA

Hydrothermally altered rocks, particularly if water saturated, can weaken stratovolcanoes, thereby increasing the potential for catastrophic sector collapses that can lead to far-traveled, destructive debris flows, which are the largest volcanic hazards for Mount Adams and Mount Baker. Evaluating the hazards associated with such alteration is difficult because much of the alteration is...
By
Geology, Geophysics, and Geochemistry Science Center, Mount Adams, Mount Baker

Airborne Electromagnetic and Magnetic Survey, Yellowstone National Park, 2016 - Minimally Processed Data Airborne Electromagnetic and Magnetic Survey, Yellowstone National Park, 2016 - Minimally Processed Data

Airborne electromagnetic (AEM) and magnetic survey data were collected during November and December 2016 along 4,212 line-kilometers over Yellowstone National Park, Wyoming. The survey was conducted as part of a study of the subsurface geologic structure and geothermal and groundwater resources of Yellowstone National Park. The survey was designed to image the subsurface plumbing of...
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

Airborne Magnetic Surveys over Oklahoma, 2017 Airborne Magnetic Surveys over Oklahoma, 2017

Airborne magnetic surveys were conducted in Oklahoma from August 11th, 2017-October 28th, 2017, by Goldak Airborne Surveys. Here we present downloadable flight line data from those surveys in comma-separated values (csv format). Three areas were flown along a draped surface with a nominal survey height above ground of 120 meters. The flight line spacing for these areas was 200 to 400 m...
By
Earthquake Hazards Program, Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

Magnetic anomaly map of North America Magnetic anomaly map of North America

This digital Magnetic Anomaly database and map for the North American continent is the result of a joint effort by the Geological Survey of Canada (GSC), U.S. Geological Survey (USGS), and Consejo de Recursos Minerales of Mexico (CRM). The database and map represent a substantial upgrade from the previous compilation of Magnetic Anomaly data for North America, now over a decade old...

Gravity anomaly and terrain maps of Washington Gravity anomaly and terrain maps of Washington

No abstract available.

Residual Bouguer gravity anomaly map of the Cascade Range, California, Oregon, Washington, and British Columbia Residual Bouguer gravity anomaly map of the Cascade Range, California, Oregon, Washington, and British Columbia

No abstract available.

Gravity anomaly and terrain maps of the Cascade Range, California, Oregon, Washington, and British Columbia Gravity anomaly and terrain maps of the Cascade Range, California, Oregon, Washington, and British Columbia

No abstract available.

Gravity and aeromagnetic maps of the Goat Rocks Wilderness and adjacent Roadless Areas, Lewis and Yakima counties, Washington Gravity and aeromagnetic maps of the Goat Rocks Wilderness and adjacent Roadless Areas, Lewis and Yakima counties, Washington

No abstract available.
Resistivity and magmatic susceptibility cross sections from Yellowstone thermal areas
Resistivity and magmatic susceptibility cross sections from Yellowstone thermal areas
Resistivity and magmatic susceptibility cross sections from Yellowstone thermal areas
Resistivity and magmatic susceptibility cross sections from Yellowstone thermal areas

Resistivity and magmatic susceptibility cross sections from Yellowstone thermal areas

Resistivity and magmatic susceptibility cross sections from Yellowstone thermal areas

Cross sections from one-dimensional electrical resistivity (top of each section) and three-dimensional magnetic susceptibility inverted models (bottom of each section) along profiles that span (a) Norris Geyser Basin, and (b) Upper Geyser Basin.  Geologic and geothermal features are from the Yellowstone geologic map. VE=vertical exaggeration.

By
Volcano Science Center, Yellowstone Volcano Observatory, Yellowstone
Resistivity and magmatic susceptibility cross sections from Yellowstone thermal areas

Resistivity and magmatic susceptibility cross sections from Yellowstone thermal areas

Resistivity and magmatic susceptibility cross sections from Yellowstone thermal areas

Cross sections from one-dimensional electrical resistivity (top of each section) and three-dimensional magnetic susceptibility inverted models (bottom of each section) along profiles that span (a) Norris Geyser Basin, and (b) Upper Geyser Basin.  Geologic and geothermal features are from the Yellowstone geologic map. VE=vertical exaggeration.

By
Volcano Science Center, Yellowstone Volcano Observatory, Yellowstone
Filter Total Items: 130

Multi-scale geophysical imaging of a hydrothermal system in Yellowstone National Park, USA Multi-scale geophysical imaging of a hydrothermal system in Yellowstone National Park, USA

Little is known about the local plumbing systems that fuel Yellowstone’s famous hot springs, geysers and mud pots. A multi-method, multi-scale geophysical investigation was carried out in the Obsidian Pool Thermal Area (OPTA) to: (i) delineate the lateral extent of the hydrothermal area and associated surface features; (ii) estimate the dimensions of the upflow zone and identify its main
Authors
Sylvain Pasquet, W. Steven Holbrook, Bradley J. Carr, Neil Terry, Martin A. Briggs, Carol A. Finn, Paul A. Bedrosian, Esben Auken, Jesper Pedersen, Pradip Kumar Maurya, Kenneth Sims
By
Water Resources Mission Area

Tungsten skarn quantitative mineral resource assessment and gold, rare earth elements, graphite, and uranium qualitative assessments of the Kuldjuktau and Auminzatau Ranges, in the central Kyzylkum region, Uzbekistan Tungsten skarn quantitative mineral resource assessment and gold, rare earth elements, graphite, and uranium qualitative assessments of the Kuldjuktau and Auminzatau Ranges, in the central Kyzylkum region, Uzbekistan

A new quantitative mineral resource assessment for tungsten skarn was conducted for the Auminzatau and Kuldjuktau mountain ranges in Central Uzbekistan, along with qualitative assessments of orogenic gold, rare earth elements (REEs), amorphous graphite, and uranium. By integrating a variety of geological, geochemical, geophysical, and remote sensing data sets, estimates of undiscovered...
Authors
Joshua Aaron Coyan, Federico Solano, Cliff D. Taylor, Carol A. Finn, Steven M. Smith, Christopher S. Holm-Denoma, Laura Pianowski, Kelsey Elizabeth Crocker, Rustam Mirkamalov, Fareed Divaev, Abdulla Baratov, Botir Khakimov, Jurabek Azimov, Akrom Goipov, Jamshid Avulov, Shokir Akhmadov, Nurbek Inatov, Xurshid Janiev, Nafisa Dulabova
By
Geology, Energy, and Minerals Mission Area, Geology, Minerals, Energy, and Geophysics Science Center

State shifts in the deep Critical Zone drive landscape evolution in volcanic terrains State shifts in the deep Critical Zone drive landscape evolution in volcanic terrains

Understanding the near-surface environment where atmospheric and solid earth processes interact, often termed the “Critical Zone,” is important for assessing resources and building resilient societies. Here, we examine a volcanic landscape in the Oregon Cascade Range, an understudied Critical Zone setting that is host to major regional water resources, pervasive silicate weathering, and
Authors
Leif Karlstrom, Nathaniel Klema, Gordon E. Grant, Carol A. Finn, Pamela L. Sullivan, Sarah Cooley, Alex Simpson, Becky Fasth, Katherine Cashman, Ken Ferrier, Lyndsay B. Ball, Daniele McKay
By
Geology, Geophysics, and Geochemistry Science Center

Deep magmatic staging chambers for crustal layered mafic intrusions: An example from the Bushveld Complex of southern Africa Deep magmatic staging chambers for crustal layered mafic intrusions: An example from the Bushveld Complex of southern Africa

The deep mafic magmatic staging chambers of layered mafic intrusions have been conjectured but not imaged. Their existence has long been postulated from geochemical models which require multiple magma injections from staging chambers to account for their multi-scale igneous layering and variations in sources and degrees of crustal contamination. For the Bushveld Complex of southern...
Authors
Janine Cole, Carol A. Finn, Susan J. Webb
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

Electromagnetic and magnetic imaging of the Stillwater Complex, Montana, USA Electromagnetic and magnetic imaging of the Stillwater Complex, Montana, USA

Modelling and analysis of helicopter electromagnetic data result in resistivity and susceptibility models and derivatives of magnetic data that characterise shallow parts of the Stillwater Complex, critical for aiding exploration and expansion of globally scarce critical and battery mineral resources that include platinum group elements, nickel, copper and chromium. The magnetic...
Authors
Carol A. Finn, Michael L. Zientek, Benjamin r. Bloss, Heather L. Parks, Justin Modroo
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center, Geology, Minerals, Energy, and Geophysics Science Center

Subsurface characterization of the Duluth Complex and related intrusions from 3D modeling of gravity and magnetotelluric data Subsurface characterization of the Duluth Complex and related intrusions from 3D modeling of gravity and magnetotelluric data

No abstract available.
Authors
Dana E. Peterson, Paul A. Bedrosian, Carol A. Finn
By
Geology, Geophysics, and Geochemistry Science Center

Science and Products

Image Collage of Landsat, pollinator, and volcanologist

Large Magmatic Systems for Minerals

This project continues work on large magmatic systems in the U.S., where critical mineral commodities important to clean energy technologies can be concentrated. Modeling of large mafic intrusion extents will continue, and new geophysical methods will be applied to improve understanding of magmatic systems.
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center, Geology, Minerals, Energy, and Geophysics Science Center
Large Magmatic Systems for Minerals

Large Magmatic Systems for Minerals

This project continues work on large magmatic systems in the U.S., where critical mineral commodities important to clean energy technologies can be concentrated. Modeling of large mafic intrusion extents will continue, and new geophysical methods will be applied to improve understanding of magmatic systems.
Learn More
Satellite map view of world with four countries highlighted in green.

Integrated Interpretation of International Mineral Resource Assessment Data

We will publish reports and interpretive papers on existing data from USGS internal mineral resource assessment collaborative work.
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center
Integrated Interpretation of International Mineral Resource Assessment Data

Integrated Interpretation of International Mineral Resource Assessment Data

We will publish reports and interpretive papers on existing data from USGS internal mineral resource assessment collaborative work.
Learn More
Stillwater River canyon with mine

Geophysical Studies on the Architecture of Large Igneous Systems Hosting Magmatic Ore Deposits

Platinum group elements, also known as PGEs, are a group of elements that have specific properties which make them useful for various applications in industry. One geologic setting that contains large concentrations of platinum group elements is layered mafic intrusions. This project will use new and preexisting geophysical datasets to characterize the internal structure of layered intrusions...
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center, Geology, Minerals, Energy, and Geophysics Science Center
Geophysical Studies on the Architecture of Large Igneous Systems Hosting Magmatic Ore Deposits

Geophysical Studies on the Architecture of Large Igneous Systems Hosting Magmatic Ore Deposits

Platinum group elements, also known as PGEs, are a group of elements that have specific properties which make them useful for various applications in industry. One geologic setting that contains large concentrations of platinum group elements is layered mafic intrusions. This project will use new and preexisting geophysical datasets to characterize the internal structure of layered intrusions...
Learn More

Surface geophysical data from Ollalie North springs, west-central Oregon Surface geophysical data from Ollalie North springs, west-central Oregon

Surface electrical resistivity tomography (ERT) data were collected in September of 2018 near Ollalie North springs in the upper McKenzie River watershed of west-central Oregon. ERT data were acquired along a single transect on the north bank of Ollalie Creek using a combination of inverse Schlumberger, dipole-dipole, and Wenner arrays. These data were collected to contribute high...
By
Geology, Geophysics, and Geochemistry Science Center

Airborne Electromagnetic Survey Processed Data and Models Data Release, Yellowstone National Park, Wyoming, 2016 Airborne Electromagnetic Survey Processed Data and Models Data Release, Yellowstone National Park, Wyoming, 2016

Airborne electromagnetic (AEM) and magnetic survey data were collected during November and December 2016 along 4,212 line-kilometers over Yellowstone National Park, Wyoming. The survey was conducted as part of a study of the subsurface geologic structure and geothermal and groundwater resources of Yellowstone National Park. The survey was designed to image the subsurface plumbing of...
By
Geology, Geophysics, and Geochemistry Science Center

Principal facts of gravity data from the Stillwater Complex, Montana, 2013-2014 and 2020 Principal facts of gravity data from the Stillwater Complex, Montana, 2013-2014 and 2020

Gravity data were collected during three separate campaigns during July of 2013, August and September of 2014, and September and October of 2020 at 168 sites on and around the Stillwater layered mafic complex in southern Montana. Measurements were taken with Lacoste & Romberg G-64, G-550, and G-161 gravimeters and reduced to obtain the complete Bouguer anomaly, with reference ties to...
By
Geology, Geophysics, and Geochemistry Science Center

Mount Baker and Mount Adams Airborne Magnetic and Electromagnetic Survey Data, August 2002, Washington, USA Mount Baker and Mount Adams Airborne Magnetic and Electromagnetic Survey Data, August 2002, Washington, USA

Hydrothermally altered rocks, particularly if water saturated, can weaken stratovolcanoes, thereby increasing the potential for catastrophic sector collapses that can lead to far-traveled, destructive debris flows, which are the largest volcanic hazards for Mount Adams and Mount Baker. Evaluating the hazards associated with such alteration is difficult because much of the alteration is...
By
Geology, Geophysics, and Geochemistry Science Center, Mount Adams, Mount Baker

Airborne Electromagnetic and Magnetic Survey, Yellowstone National Park, 2016 - Minimally Processed Data Airborne Electromagnetic and Magnetic Survey, Yellowstone National Park, 2016 - Minimally Processed Data

Airborne electromagnetic (AEM) and magnetic survey data were collected during November and December 2016 along 4,212 line-kilometers over Yellowstone National Park, Wyoming. The survey was conducted as part of a study of the subsurface geologic structure and geothermal and groundwater resources of Yellowstone National Park. The survey was designed to image the subsurface plumbing of...
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

Airborne Magnetic Surveys over Oklahoma, 2017 Airborne Magnetic Surveys over Oklahoma, 2017

Airborne magnetic surveys were conducted in Oklahoma from August 11th, 2017-October 28th, 2017, by Goldak Airborne Surveys. Here we present downloadable flight line data from those surveys in comma-separated values (csv format). Three areas were flown along a draped surface with a nominal survey height above ground of 120 meters. The flight line spacing for these areas was 200 to 400 m...
By
Earthquake Hazards Program, Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

Magnetic anomaly map of North America Magnetic anomaly map of North America

This digital Magnetic Anomaly database and map for the North American continent is the result of a joint effort by the Geological Survey of Canada (GSC), U.S. Geological Survey (USGS), and Consejo de Recursos Minerales of Mexico (CRM). The database and map represent a substantial upgrade from the previous compilation of Magnetic Anomaly data for North America, now over a decade old...

Gravity anomaly and terrain maps of Washington Gravity anomaly and terrain maps of Washington

No abstract available.

Residual Bouguer gravity anomaly map of the Cascade Range, California, Oregon, Washington, and British Columbia Residual Bouguer gravity anomaly map of the Cascade Range, California, Oregon, Washington, and British Columbia

No abstract available.

Gravity anomaly and terrain maps of the Cascade Range, California, Oregon, Washington, and British Columbia Gravity anomaly and terrain maps of the Cascade Range, California, Oregon, Washington, and British Columbia

No abstract available.

Gravity and aeromagnetic maps of the Goat Rocks Wilderness and adjacent Roadless Areas, Lewis and Yakima counties, Washington Gravity and aeromagnetic maps of the Goat Rocks Wilderness and adjacent Roadless Areas, Lewis and Yakima counties, Washington

No abstract available.
Resistivity and magmatic susceptibility cross sections from Yellowstone thermal areas
Resistivity and magmatic susceptibility cross sections from Yellowstone thermal areas
Resistivity and magmatic susceptibility cross sections from Yellowstone thermal areas
Resistivity and magmatic susceptibility cross sections from Yellowstone thermal areas

Resistivity and magmatic susceptibility cross sections from Yellowstone thermal areas

Resistivity and magmatic susceptibility cross sections from Yellowstone thermal areas

Cross sections from one-dimensional electrical resistivity (top of each section) and three-dimensional magnetic susceptibility inverted models (bottom of each section) along profiles that span (a) Norris Geyser Basin, and (b) Upper Geyser Basin.  Geologic and geothermal features are from the Yellowstone geologic map. VE=vertical exaggeration.

By
Volcano Science Center, Yellowstone Volcano Observatory, Yellowstone
Resistivity and magmatic susceptibility cross sections from Yellowstone thermal areas

Resistivity and magmatic susceptibility cross sections from Yellowstone thermal areas

Resistivity and magmatic susceptibility cross sections from Yellowstone thermal areas

Cross sections from one-dimensional electrical resistivity (top of each section) and three-dimensional magnetic susceptibility inverted models (bottom of each section) along profiles that span (a) Norris Geyser Basin, and (b) Upper Geyser Basin.  Geologic and geothermal features are from the Yellowstone geologic map. VE=vertical exaggeration.

By
Volcano Science Center, Yellowstone Volcano Observatory, Yellowstone
Filter Total Items: 130

Multi-scale geophysical imaging of a hydrothermal system in Yellowstone National Park, USA Multi-scale geophysical imaging of a hydrothermal system in Yellowstone National Park, USA

Little is known about the local plumbing systems that fuel Yellowstone’s famous hot springs, geysers and mud pots. A multi-method, multi-scale geophysical investigation was carried out in the Obsidian Pool Thermal Area (OPTA) to: (i) delineate the lateral extent of the hydrothermal area and associated surface features; (ii) estimate the dimensions of the upflow zone and identify its main
Authors
Sylvain Pasquet, W. Steven Holbrook, Bradley J. Carr, Neil Terry, Martin A. Briggs, Carol A. Finn, Paul A. Bedrosian, Esben Auken, Jesper Pedersen, Pradip Kumar Maurya, Kenneth Sims
By
Water Resources Mission Area

Tungsten skarn quantitative mineral resource assessment and gold, rare earth elements, graphite, and uranium qualitative assessments of the Kuldjuktau and Auminzatau Ranges, in the central Kyzylkum region, Uzbekistan Tungsten skarn quantitative mineral resource assessment and gold, rare earth elements, graphite, and uranium qualitative assessments of the Kuldjuktau and Auminzatau Ranges, in the central Kyzylkum region, Uzbekistan

A new quantitative mineral resource assessment for tungsten skarn was conducted for the Auminzatau and Kuldjuktau mountain ranges in Central Uzbekistan, along with qualitative assessments of orogenic gold, rare earth elements (REEs), amorphous graphite, and uranium. By integrating a variety of geological, geochemical, geophysical, and remote sensing data sets, estimates of undiscovered...
Authors
Joshua Aaron Coyan, Federico Solano, Cliff D. Taylor, Carol A. Finn, Steven M. Smith, Christopher S. Holm-Denoma, Laura Pianowski, Kelsey Elizabeth Crocker, Rustam Mirkamalov, Fareed Divaev, Abdulla Baratov, Botir Khakimov, Jurabek Azimov, Akrom Goipov, Jamshid Avulov, Shokir Akhmadov, Nurbek Inatov, Xurshid Janiev, Nafisa Dulabova
By
Geology, Energy, and Minerals Mission Area, Geology, Minerals, Energy, and Geophysics Science Center

State shifts in the deep Critical Zone drive landscape evolution in volcanic terrains State shifts in the deep Critical Zone drive landscape evolution in volcanic terrains

Understanding the near-surface environment where atmospheric and solid earth processes interact, often termed the “Critical Zone,” is important for assessing resources and building resilient societies. Here, we examine a volcanic landscape in the Oregon Cascade Range, an understudied Critical Zone setting that is host to major regional water resources, pervasive silicate weathering, and
Authors
Leif Karlstrom, Nathaniel Klema, Gordon E. Grant, Carol A. Finn, Pamela L. Sullivan, Sarah Cooley, Alex Simpson, Becky Fasth, Katherine Cashman, Ken Ferrier, Lyndsay B. Ball, Daniele McKay
By
Geology, Geophysics, and Geochemistry Science Center

Deep magmatic staging chambers for crustal layered mafic intrusions: An example from the Bushveld Complex of southern Africa Deep magmatic staging chambers for crustal layered mafic intrusions: An example from the Bushveld Complex of southern Africa

The deep mafic magmatic staging chambers of layered mafic intrusions have been conjectured but not imaged. Their existence has long been postulated from geochemical models which require multiple magma injections from staging chambers to account for their multi-scale igneous layering and variations in sources and degrees of crustal contamination. For the Bushveld Complex of southern...
Authors
Janine Cole, Carol A. Finn, Susan J. Webb
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

Electromagnetic and magnetic imaging of the Stillwater Complex, Montana, USA Electromagnetic and magnetic imaging of the Stillwater Complex, Montana, USA

Modelling and analysis of helicopter electromagnetic data result in resistivity and susceptibility models and derivatives of magnetic data that characterise shallow parts of the Stillwater Complex, critical for aiding exploration and expansion of globally scarce critical and battery mineral resources that include platinum group elements, nickel, copper and chromium. The magnetic...
Authors
Carol A. Finn, Michael L. Zientek, Benjamin r. Bloss, Heather L. Parks, Justin Modroo
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center, Geology, Minerals, Energy, and Geophysics Science Center

Subsurface characterization of the Duluth Complex and related intrusions from 3D modeling of gravity and magnetotelluric data Subsurface characterization of the Duluth Complex and related intrusions from 3D modeling of gravity and magnetotelluric data

No abstract available.
Authors
Dana E. Peterson, Paul A. Bedrosian, Carol A. Finn
By
Geology, Geophysics, and Geochemistry Science Center

*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government

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