Karen Lund
Karen Lund is a Research Geologist with the Geology, Geophysics, and Geochemistry Science Center.
Science and Products
Filter Total Items: 37
Descriptive and geoenvironmental model for Co-Cu-Au deposits in metasedimentary rocks Descriptive and geoenvironmental model for Co-Cu-Au deposits in metasedimentary rocks
Introduction This report is a revised model for a specific type of cobalt-copper-gold (Co-Cu-Au) deposit that will be evaluated in the next U.S. Geological Survey (USGS) assessment of undiscovered mineral resources in the United States (see Ferrero and others, 2012). Emphasis is on providing an up-to-date deposit model that includes both geologic and geoenvironmental aspects. The new...
Authors
John F. Slack, Craig A. Johnson, J. Douglas Causey, Karen Lund, Klaus J. Schulz, John E. Gray, Robert G. Eppinger
Synthesis of petrographic, geochemical, and isotopic data for the Boulder batholith, southwest Montana 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...
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 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...
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 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...
Authors
Karen Lund, John N. Aleinikoff, Karl V. Evans
Chapter 39 The Edwardsburg Formation and related rocks, Windermere Supergroup, central Idaho, USA 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...
Authors
Karen Lund, Karl V. Evans, John N. Alienikoff
Geochemical database for the Boulder batholith and its satellitic plutons, Southwest Montana 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...
Authors
Edward A. du Bray, Karen Lund, Robert I. Tilling, Paul Denning, Ed DeWitt
Science and Products
Filter Total Items: 37
Descriptive and geoenvironmental model for Co-Cu-Au deposits in metasedimentary rocks Descriptive and geoenvironmental model for Co-Cu-Au deposits in metasedimentary rocks
Introduction This report is a revised model for a specific type of cobalt-copper-gold (Co-Cu-Au) deposit that will be evaluated in the next U.S. Geological Survey (USGS) assessment of undiscovered mineral resources in the United States (see Ferrero and others, 2012). Emphasis is on providing an up-to-date deposit model that includes both geologic and geoenvironmental aspects. The new...
Authors
John F. Slack, Craig A. Johnson, J. Douglas Causey, Karen Lund, Klaus J. Schulz, John E. Gray, Robert G. Eppinger
Synthesis of petrographic, geochemical, and isotopic data for the Boulder batholith, southwest Montana 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...
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 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...
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 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...
Authors
Karen Lund, John N. Aleinikoff, Karl V. Evans
Chapter 39 The Edwardsburg Formation and related rocks, Windermere Supergroup, central Idaho, USA 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...
Authors
Karen Lund, Karl V. Evans, John N. Alienikoff
Geochemical database for the Boulder batholith and its satellitic plutons, Southwest Montana 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...
Authors
Edward A. du Bray, Karen Lund, Robert I. Tilling, Paul Denning, Ed DeWitt