Karen Lund
Karen Lund is a Research Geologist with the Geology, Geophysics, and Geochemistry Science Center.
Science and Products
Filter Total Items: 35
Synthesis of petrographic, geochemical, and isotopic data for the Boulder batholith, southwest Montana
The Late Cretaceous Boulder batholith in southwest Montana consists of the Butte Granite and a group of associated smaller intrusions emplaced into Mesoproterozoic to Mesozoic sedimentary rocks and into the Late Cretaceous Elkhorn Mountains Volcanics. The Boulder batholith is dominated by the voluminous Butte Granite, which is surrounded by as many as a dozen individually named, peripheral intrusi
Authors
Edward A. du Bray, John N. Aleinikoff, Karen Lund
Constraints on the timing of Co-Cu ± Au mineralization in the Blackbird district, Idaho, using SHRIMP U-Pb ages of monazite and xenotime plus zircon ages of related Mesoproterozoic orthogneisses and metasedimentary rocks
The Blackbird district, east-central Idaho, contains the largest known Co reserves in the United States. The origin of strata-hosted Co-Cu ± Au mineralization at Blackbird has been a matter of controversy for decades. In order to differentiate among possible genetic models for the deposits, including various combinations of volcanic, sedimentary, magmatic, and metamorphic processes, we used U-Pb g
Authors
John N. Aleinikoff, John F. Slack, Karen Lund, Karl V. Evans, C. Mark Fanning, Frank K. Mazdab, Joseph L. Wooden, Renee M. Pillers
The Edwardsburg Formation and related rocks, Windermere Supergroup, central Idaho, USA
In central Idaho, Neoproterozoic stratified rocks are engulfed by the Late Cretaceous Idaho batholith and by Eocene volcanic and plutonic rocks of the Challis event. Studied sections in the Gospel Peaks and Big Creek areas of west-central Idaho are in roof pendants of the Idaho batholith. A drill core section studied from near Challis, east-central Idaho, lies beneath the Challis Volcanic Group an
Authors
Karen Lund, John N. Aleinikoff, Karl V. Evans
Chapter 39 The Edwardsburg Formation and related rocks, Windermere Supergroup, central Idaho, USA
In central Idaho, Neoproterozoic stratified rocks are engulfed by the Late Cretaceous Idaho batholith and by Eocene volcanic and plutonic rocks of the Challis event. Studied sections in the Gospel Peaks and Big Creek areas of west-central Idaho are in roof pendants of the Idaho batholith. A drill core section studied from near Challis, east-central Idaho, lies beneath the Challis Volcanic Group an
Authors
Karen Lund, Karl V. Evans, John N. Alienikoff
Geochemical database for the Boulder batholith and its satellitic plutons, Southwest Montana
Geochemical data presented in this report pertain to Cretaceous igneous intrusions of the Boulder batholith and its satellitic plutons in southwest Montana. The geographic area addressed in this compilation is approximately bounded by lats 45.6 deg and 46.7 deg N. and longs 112.75 deg and 111.5 deg W. These data were compiled in order to establish the geologic framework for world-class mineral dep
Authors
Edward A. du Bray, Karen Lund, Robert I. Tilling, Paul Denning, Ed DeWitt
Uranium-Lead Zircon Ages and Sr, Nd, and Pb Isotope Geochemistry of Selected Plutonic Rocks from Western Idaho
Across the Salmon River suture in western Idaho, where allochthonous Permian to Cretaceous oceanic rocks are juxtaposed against Proterozoic North American rocks, a wide variety of plutonic rocks are exposed. Available data indicate much variation in composition, source, and structural state of these plutons. The plutonic rocks were long described as the western border zone of the Cretaceous Idaho
Authors
Daniel M. Unruh, Karen Lund, Mel A. Kuntz, Lawrence W. Snee
USGS Headwaters Province project, Idaho, Montana, and Washington - an overview of publications supporting land-use planning in the northern Rocky Mountains
No abstract available.
Authors
Michael L. Zientek, Karen Lund
SHRIMP U-Pb and 40Ar/39Ar age constraints for relating plutonism and mineralization in the Boulder batholith region, Montana
The composite Boulder batholith, Montana, hosts a variety of mineral deposit types, including important silver-rich polymetallic quartz vein districts in the northern part of the batholith and the giant Butte porphyry copper-molybdenum pre-Main Stage system and crosscutting copper-rich Main Stage vein system in the southern part of the batholith. Previous dating studies have identified ambiguous r
Authors
Karen Lund, John N. Aleinikoff, Michael J. Kunk, Daniel M. Unruh, G. D. Zeihen, W. C. Hodges, Edward A. du Bray, J. Michael O'Neill
Digital geologic map database of the Payette National Forest and vicinity, Idaho
The geology of the Payette National Forest and vicinity, Idaho (Fig. 1), was mapped and compiled by Karen Lund between 1992 and 1996. The geologic data for the digital map are from original mapping as well as compilation by Lund of numerous sources of published and unpublished geologic maps that are cited in the section 'Bibliography of Geologic Map Sources.' The geology was compiled onto 1:100,00
Authors
Karen Lund, P. D. Derkey, T. R. Brandt, J.R. Oblad
Potential mineral resources, Payette National Forest, Idaho: Description and probabilistic estimation
The Payette National Forest (PNF), in west-central Idaho, is geologically diverse and contains a wide variety of mineral resources. Mineral deposit types are grouped into locatable, leasable, and salable categories. The PNF has substantial past production and identified resources of locatable commodities, including gold, silver, copper, zinc, tungsten, antimony, mercury, and opal. Minor lignitic c
Authors
Arthur A. Bookstrom, Bruce R. Johnson, Theresa M. Cookro, Karen Lund, Kenneth C. Watts, Harley D. King, Merlin D. Kleinkopf, James A. Pitkin, J. David Sanchez, J. Douglas Causey
By
Energy and Minerals Mission Area, Energy Resources Program, Groundwater and Streamflow Information Program, Mineral Resources Program, National Laboratories Program, Science and Decisions Center, Geology, Geophysics, and Geochemistry Science Center, Geology, Minerals, Energy, and Geophysics Science Center
Analyses of rocks and stream sediment from the Special Mining Management Zone; Clear Creek, Lemhi County, Idaho
No abstract available.
Authors
K. V. Evans, Karen Lund, Robert Fairfield, R. T. Hopkins, T. A. Roemer, S. J. Sutley
Analyses of rocks and stream sediment from the Special Mining Management Zone-Clear Creek, Lemhi County, Idaho
No abstract available.
Authors
K. V. Evans, Karen Lund, Robert Fairfield, R. T. Hopkins, T. A. Roemer, S. J. Sutley
Science and Products
Filter Total Items: 35
Synthesis of petrographic, geochemical, and isotopic data for the Boulder batholith, southwest Montana
The Late Cretaceous Boulder batholith in southwest Montana consists of the Butte Granite and a group of associated smaller intrusions emplaced into Mesoproterozoic to Mesozoic sedimentary rocks and into the Late Cretaceous Elkhorn Mountains Volcanics. The Boulder batholith is dominated by the voluminous Butte Granite, which is surrounded by as many as a dozen individually named, peripheral intrusi
Authors
Edward A. du Bray, John N. Aleinikoff, Karen Lund
Constraints on the timing of Co-Cu ± Au mineralization in the Blackbird district, Idaho, using SHRIMP U-Pb ages of monazite and xenotime plus zircon ages of related Mesoproterozoic orthogneisses and metasedimentary rocks
The Blackbird district, east-central Idaho, contains the largest known Co reserves in the United States. The origin of strata-hosted Co-Cu ± Au mineralization at Blackbird has been a matter of controversy for decades. In order to differentiate among possible genetic models for the deposits, including various combinations of volcanic, sedimentary, magmatic, and metamorphic processes, we used U-Pb g
Authors
John N. Aleinikoff, John F. Slack, Karen Lund, Karl V. Evans, C. Mark Fanning, Frank K. Mazdab, Joseph L. Wooden, Renee M. Pillers
The Edwardsburg Formation and related rocks, Windermere Supergroup, central Idaho, USA
In central Idaho, Neoproterozoic stratified rocks are engulfed by the Late Cretaceous Idaho batholith and by Eocene volcanic and plutonic rocks of the Challis event. Studied sections in the Gospel Peaks and Big Creek areas of west-central Idaho are in roof pendants of the Idaho batholith. A drill core section studied from near Challis, east-central Idaho, lies beneath the Challis Volcanic Group an
Authors
Karen Lund, John N. Aleinikoff, Karl V. Evans
Chapter 39 The Edwardsburg Formation and related rocks, Windermere Supergroup, central Idaho, USA
In central Idaho, Neoproterozoic stratified rocks are engulfed by the Late Cretaceous Idaho batholith and by Eocene volcanic and plutonic rocks of the Challis event. Studied sections in the Gospel Peaks and Big Creek areas of west-central Idaho are in roof pendants of the Idaho batholith. A drill core section studied from near Challis, east-central Idaho, lies beneath the Challis Volcanic Group an
Authors
Karen Lund, Karl V. Evans, John N. Alienikoff
Geochemical database for the Boulder batholith and its satellitic plutons, Southwest Montana
Geochemical data presented in this report pertain to Cretaceous igneous intrusions of the Boulder batholith and its satellitic plutons in southwest Montana. The geographic area addressed in this compilation is approximately bounded by lats 45.6 deg and 46.7 deg N. and longs 112.75 deg and 111.5 deg W. These data were compiled in order to establish the geologic framework for world-class mineral dep
Authors
Edward A. du Bray, Karen Lund, Robert I. Tilling, Paul Denning, Ed DeWitt
Uranium-Lead Zircon Ages and Sr, Nd, and Pb Isotope Geochemistry of Selected Plutonic Rocks from Western Idaho
Across the Salmon River suture in western Idaho, where allochthonous Permian to Cretaceous oceanic rocks are juxtaposed against Proterozoic North American rocks, a wide variety of plutonic rocks are exposed. Available data indicate much variation in composition, source, and structural state of these plutons. The plutonic rocks were long described as the western border zone of the Cretaceous Idaho
Authors
Daniel M. Unruh, Karen Lund, Mel A. Kuntz, Lawrence W. Snee
USGS Headwaters Province project, Idaho, Montana, and Washington - an overview of publications supporting land-use planning in the northern Rocky Mountains
No abstract available.
Authors
Michael L. Zientek, Karen Lund
SHRIMP U-Pb and 40Ar/39Ar age constraints for relating plutonism and mineralization in the Boulder batholith region, Montana
The composite Boulder batholith, Montana, hosts a variety of mineral deposit types, including important silver-rich polymetallic quartz vein districts in the northern part of the batholith and the giant Butte porphyry copper-molybdenum pre-Main Stage system and crosscutting copper-rich Main Stage vein system in the southern part of the batholith. Previous dating studies have identified ambiguous r
Authors
Karen Lund, John N. Aleinikoff, Michael J. Kunk, Daniel M. Unruh, G. D. Zeihen, W. C. Hodges, Edward A. du Bray, J. Michael O'Neill
Digital geologic map database of the Payette National Forest and vicinity, Idaho
The geology of the Payette National Forest and vicinity, Idaho (Fig. 1), was mapped and compiled by Karen Lund between 1992 and 1996. The geologic data for the digital map are from original mapping as well as compilation by Lund of numerous sources of published and unpublished geologic maps that are cited in the section 'Bibliography of Geologic Map Sources.' The geology was compiled onto 1:100,00
Authors
Karen Lund, P. D. Derkey, T. R. Brandt, J.R. Oblad
Potential mineral resources, Payette National Forest, Idaho: Description and probabilistic estimation
The Payette National Forest (PNF), in west-central Idaho, is geologically diverse and contains a wide variety of mineral resources. Mineral deposit types are grouped into locatable, leasable, and salable categories. The PNF has substantial past production and identified resources of locatable commodities, including gold, silver, copper, zinc, tungsten, antimony, mercury, and opal. Minor lignitic c
Authors
Arthur A. Bookstrom, Bruce R. Johnson, Theresa M. Cookro, Karen Lund, Kenneth C. Watts, Harley D. King, Merlin D. Kleinkopf, James A. Pitkin, J. David Sanchez, J. Douglas Causey
By
Energy and Minerals Mission Area, Energy Resources Program, Groundwater and Streamflow Information Program, Mineral Resources Program, National Laboratories Program, Science and Decisions Center, Geology, Geophysics, and Geochemistry Science Center, Geology, Minerals, Energy, and Geophysics Science Center
Analyses of rocks and stream sediment from the Special Mining Management Zone; Clear Creek, Lemhi County, Idaho
No abstract available.
Authors
K. V. Evans, Karen Lund, Robert Fairfield, R. T. Hopkins, T. A. Roemer, S. J. Sutley
Analyses of rocks and stream sediment from the Special Mining Management Zone-Clear Creek, Lemhi County, Idaho
No abstract available.
Authors
K. V. Evans, Karen Lund, Robert Fairfield, R. T. Hopkins, T. A. Roemer, S. J. Sutley