Publications
Products (journal articles, reports, fact sheets) authored by current and past scientists are listed below. Please check the USGS Pubs Warehouse for other USGS publications.
Filter Total Items: 2021
Arsenic in ground water: Geochemistry and occurrence Arsenic in ground water: Geochemistry and occurrence
Interest in arsenic in ground water has greatly increased in the past decade because of the increased awareness of human health effects and the costs of avoidance or treatment of ground water supplies used for consumption. The goal of this book is to provide a description of the basic processes that affect arsenic occurrence and transport by providing sufficient background information on...
Preliminary geologic map of the northeast Dillingham quadrangle (D-1, D-2, C-1, and C-2), Alaska Preliminary geologic map of the northeast Dillingham quadrangle (D-1, D-2, C-1, and C-2), Alaska
Open-File Report 03-105 contains a digital geologic map database for the northeast part of the Dillingham 1:250,000-scale quadrangle, specifically the D-1, D-2, C-1, and C-2 1:63,360-scale map sheets. The report includes:A Postscript file showing the geologic map on a topographic and land-grid base, and containing a Correlation of Map Units diagram (CMU), and a List of Map Units. (Note...
Authors
Frederic H. Wilson, Travis L. Hudson, Donald Grybeck, Douglas B. Stoeser, Cindi C. Preller, Damon Bickerstaff, Keith A. Labay, Marti L. Miller
Digital depth horizon compilations of the Alaskan North Slope and adjacent Arctic regions Digital depth horizon compilations of the Alaskan North Slope and adjacent Arctic regions
Data have been digitized and combined to create four detailed depth horizon grids spanning the Alaskan North Slope and adjacent offshore areas. These map horizon compilations were created to aid in petroleum system modeling and related studies. Topography/bathymetry is extracted from a recent Arctic compilation of global onshore DEM and satellite altimetry and ship soundings offshore...
Authors
Richard W. Saltus, Kenneth J. Bird
Reflectance spectroscopy as a rapid assessment tool for the detection of amphiboles from the Libby, Montana region Reflectance spectroscopy as a rapid assessment tool for the detection of amphiboles from the Libby, Montana region
No abstract available.
Authors
Roger N. Clark, Todd M. Hoefen, Gregg A. Swayze, K. Eric Livo, Greg P. Meeker, Steve J. Sutley, Steve Wilson, Isabelle K. Brownfield, J. Sam Vance
Role of large-scale fluid-flow in subsurface arsenic enrichment Role of large-scale fluid-flow in subsurface arsenic enrichment
No abstract available.
Authors
Martin B. Goldhaber, R. Lee, Joseph R. Hatch, J.C. Pashin, J.D. Treworgy
Middle Devonian to Early Carboniferous event stratigraphy of Devils Gate and Northern Antelope Range sections, Nevada, U.S.A Middle Devonian to Early Carboniferous event stratigraphy of Devils Gate and Northern Antelope Range sections, Nevada, U.S.A
The classic type section of the Devils Gate Limestone at Devils Gate Pass is situated on the eastern slope of a proto-Antler forebulge that resulted from convergence of the west side of the North American continent with an ocean plate. The original Late Devonian forebulge, the site of which is now located between Devils Gate Pass and the Northern Antelope Range, separated the continental...
Authors
Charles Sandberg, J. R. Morrow, F. G. Poole, W. Ziegler
Formation of modern and Paleozoic stratiform barite at cold methane seeps on continental margins Formation of modern and Paleozoic stratiform barite at cold methane seeps on continental margins
Stratiform (bedded) Paleozoic barite occurs as large conformable beds within organic- and chert-rich sediments; the beds lack major sulfide minerals and are the largest and most economically significant barite deposits in the geologic record. Existing models for the origin of bedded barite fail to explain all their characteristics: the deposits display properties consistent with an...
Authors
M.E. Torres, G. Bohrmann, T.E. Dube, F. G. Poole
Geologic signature of early Tertiary ridge subduction in Alaska Geologic signature of early Tertiary ridge subduction in Alaska
A mid-Paleocene to early Eocene encounter between an oceanic spreading center and a subduction zone produced a wide range of geologic features in Alaska. The most striking effects are seen in the accretionary prism (Chugach–Prince William terrane), where 61 to 50 Ma near-trench granitic to gabbroic plutons were intruded into accreted trench sediments that had been deposited only a few...
Authors
Dwight Bradley, Timothy M. Kusky, Peter J. Haeussler, Richard J. Goldfarb, Marti L. Miller, Julie A. Dumoulin, Steven W. Nelson, Susan M. Karl
Origin of high-grade gold ore, source of ore fluid components, and genesis of the Meikle and neighboring Carlin-type deposits, Northern Carlin Trend, Nevada Origin of high-grade gold ore, source of ore fluid components, and genesis of the Meikle and neighboring Carlin-type deposits, Northern Carlin Trend, Nevada
The Meikle mine exploits one of the world’s highest grade Carlin-type gold deposits with reserves of ca. 220 t gold at an average grade of 24.7 g/t. Locally, gold grades exceed 400 g/t. Several geologic events converged at Meikle to create these spectacular gold grades. Prior to mineralization, a Devonian hydrothermal system altered the Bootstrap limestone to Fe-rich dolomite...
Authors
Poul Emsbo, Albert Hofstra, E. A. Lauha, G. L. Griffin, R. W. Hutchinson
Mapping vegetation in Yellowstone National Park using spectral feature analysis of AVIRIS data Mapping vegetation in Yellowstone National Park using spectral feature analysis of AVIRIS data
Knowledge of the distribution of vegetation on the landscape can be used to investigate ecosystem functioning. The sizes and movements of animal populations can be linked to resources provided by different plant species. This paper demonstrates the application of imaging spectroscopy to the study of vegetation in Yellowstone National Park (Yellowstone) using spectral feature analysis of...
Authors
Raymond F. Kokaly, Don G. Despain, Roger N. Clark, K. Eric Livo