Leg 188 synthesis: Transitions in the glacial history of the Prydz Bay region, East Antarctica, from ODP drilling
Alan K. Cooper, P. E. O’Brien
2004, Proceedings of the Ocean Drilling Program: Scientific Results (188) 1-65
Drilling during Leg 119 (1988) and Leg 188 (2000; Sites 1165–1167) of the Ocean Drilling Program (ODP) provides direct evidence for long- and short-term changes in Cenozoic paleoenvironments in the Prydz Bay region. Cores from across the continental margin reveal...
Digital elevation extraction from multiple MTI data sets
Jeffrey A. Mercier, Robert A. Schowengerdt, James C. Storey, Jody L. Smith
2004, Conference Paper
The Digital Elevation Model (DEM) extraction process traditionally uses a stereo pair of aerial photographs that are sequentially captured using an airborne metric camera. Standard DEM extraction techniques have been naturally extended to utilize satellite imagery. However, the particular characteristics of satellite imaging can cause difficulties in the DEM extraction...
Formation of modern and Paleozoic stratiform barite at cold methane seeps on continental margins: Comment and Reply: Comment
Poul Emsbo, Craig A. Johnson
2004, Geology (32) e64-e65
No abstract available....
Effects of management practices on grassland birds: Prairie Falcon
John P. DeLong, Karen Steenhof
2004, Report
Information on the habitat requirements and effects of habitat management on grassland birds were summarized from information in more than 4,000 published and unpublished papers. A range map is provided to indicate the breeding, year-round, and nonbreeding ranges in the United States and southern Canada. Although birds frequently are observed...
Global distribution of natural gas resources
Ronald R. Charpentier
2004, Book chapter, Encyclopedia of Energy
No abstract available....
The Global Invasive Species Information Network: What's in it for you?
Annie Simpson
2004, BioScience (54) 613-614
A well-known article in BioScience— probably the most widely cited scientific study on invasive species in recent years—calculated the annual cost of invasive species in the United States alone at $138 billion per year (Pimentel et al. 2000). The total annual cost of invasive species to human societies worldwide can therefore...
Tertiary thrust systems and fluid flow beneath the Beaufort coastal plain (1002 area), Arctic National Wildlife Refuge, Alaska, U.S.A.
Christopher J. Potter, John A. Grow, William J. Perry Jr., Thomas E. Moore, Paul B. O'Sullivan, Jeffrey D. Phillips, Richard W. Saltus
2004, Book chapter, Deformation, fluid flow, and reservoir appraisal in foreland fold and thrust belts
Beneath the Arctic coastal plain (commonly referred to as "the 1002 area") in the Arctic National Wildlife Refuge, northeastern Alaska, United States, seismic reflection data show that the northernmost and youngest part of the Brookian orogen is preserved as a Paleogene to Neogene system of blind and buried thrust-related structures....
Two stages of deformation and fluid migration in the west-central Brooks Range fold-and-thrust belt, Northern Alaska
Thomas E. Moore, Christopher J. Potter, Paul B. O'Sullivan, Kevin L. Shelton, Michael B. Underwood
2004, Book chapter
The Brooks Range is a north-directed fold and thrust belt that forms the southern boundary of the North Slope petroleum province in northern Alaska. Field-based studies have long recognized that large-magnitude, thin-skinned folding and thrusting in the Brooks Range occurred during arc-continent collision in the Middle Jurassic to Early Cretaceous...
Paleozoic sedimentary rocks in the Red Dog Zn-Pb-Ag district and vicinity, western Brooks Range, Alaska: provenance, deposition, and metallogenic significance
John F. Slack, Julie A. Dumoulin, J.M. Schmidt, L. E. Young, Cameron Rombach
2004, Economic Geology (99) 1385-1414
Geochemical analyses of Paleozoic sedimentary rocks in the western Brooks Range reveal a complex evolutionary history for strata surrounding the large Zn-Pb-Ag deposits of the Red Dog district. Data for major elements, trace elements, and rare earth elements (REE) were obtained on 220 samples of unaltered and unmineralized siliciclastic rocks...
Aggregate and the environment
William H. Langer, Lawrence J. Drew, J.S. Sachs
2004, Book
This book is designed to help you understand our aggregate resources-their importance, where they come from, how they are processed for our use, the environmental concerns related to their mining and processing, how those concerns are addressed, and the policies and regulations designed to safeguard workers, neighbors, and the environment...
A kinematic model for the southern Alaska orocline based on regional fault patterns
Jonathan M.G. Glen
Aviva J. Sussman, Arlo B. Weil, editor(s)
2004, Book chapter, Orogenic curvature: Integrating paleomagnetic and structural analyses
Among the most prominent physiographic features of southern Alaska are a series of nested arcuate lineations, including the Denali fault, that parallel the concave-southward southern coastline of the state. These features are generally interpreted as major dextral shear zones that formed in the Late Cretaceous to early Tertiary in response...
Landsat yesterday and today: An American vision and an old challenge
John Faundeen, Darrel L. Williams, Cheryl A. Greenhagen
2004, Journal of Map & Geography Libraries (1) 59-73
Since the late 1960s, the United States government has invested more than $1 billion in designing, launching, and operating the Landsat (land satellite) series of Earth-observing satellites. Global change researchers, geologists, and environmental scientists have used images gathered by the satellites for purposes ranging from human health research, energy exploration,...
Nature of hydrothermal fluids at the shale-hosted Red Dog Zn-Pb-Ag deposits, Brooks Range, Alaska
David L. Leach, Erin E. Marsh, Poul Emsbo, Cameron Rombach, Karen D. Kelley, Michael W. Anthony
2004, Economic Geology (99) 1449-1480
The Red Dog Zn-Pb-Ag district in the western Brooks Range, northern Alaska, contains numerous shale-hosted Zn-Pb sulfide and barite deposits in organic-rich siliceous mudstone and shale, chert, and carbonate rocks of the Carboniferous Kuna Formation. The giant Red Dog shale-hosted deposits consist of a cluster of four orebodies (Main, Qanaiyaq,...
The complexity of reversals
Robert S. Coe, Jonathan M.G. Glen
J.E.T. Channell, D.V. Kent, W. Lowrie, J. G. Meert, editor(s)
2004, Book chapter, Timescales of the paleomagnetic field
This chapter contains sections titled:IntroductionSome Illustrative Polarity Transition RecordsThe Case for ComplexityConclusions...
Thermal alteration of Cretaceous black shale from the Eastern Atlantic. III: Laboratory simulations
Bernd R. T. Simoneit, K. E. Peters, Brian G. Rohrback, S. Brenner, I.R. Kaplan
Ronald J. Hill, Joel Leventhal, Zeev Aizenshtat, Mary Jo Baedecker, George Claypool, Robert P. Eganhouse, Martin B. Goldhaber, Kenneth E. Peters, editor(s)
2004, Book chapter, Geochemical investigations in earth and space science: A tribute to Isaac R. Kaplan
Laboratory thermal alteration (pyrolysis) experiments were carried out on composited Cretaceous black shale samples from DSDP Hole 368. Dried rock samples (low water-rock ratio) were heated in an inert atmosphere in the range of 250–500°C and the resultant bitumen and kerogen concentrates were characterized. Pyrobitumen forms initially (250°C), then major...
Use and environmental occurrence of veterinary pharmaceuticals in the United States
M. T. Meyer
2004, Book chapter, Pharmaceuticals in the environment: Sources, fate, effects, and risks
The purpose of this chapter is to familiarise the reader with the range of veterinary pharmaceuticals used in agriculture in the United States and to provide examples of the environmental occurrence of selected veterinary pharmaceuticals. A 1998 survey conducted by the Animal Health Institute (AHI) reported that there were 109...
Biomonitoring of Environmental Status and Trends (BEST) Program: Environmental contaminants and their effects on fish in the Columbia River Basin
Jo Ellen Hinck, Christopher J. Schmitt, Timothy M. Bartish, Nancy D. Denslow, Vicki Blazer, Patrick J. Anderson, James J. Coyle, Gail M. Dethloff, Donald E. Tillitt
2004, Scientific Investigations Report 2004-5154
This project examined and analyzed 560 fish representing eight species from 16 sites in the Columbia River Basin (CRB) from September 1997 to April 1998. Ten of the 16 sampling locations were historical National Contaminant Biomonitoring Program (NCBP) sites where organochlorine and elemental contaminants in fish had been monitored from...
Pressure changes associated with the ascent and bursting of gas slugs in liquid-filled vertical and inclined conduits
M. R. James, S. J. Lane, Bernard A. Chouet, J.S. Gilbert
2004, Journal of Volcanology and Geothermal Research (129) 61-82
At basaltic volcanoes, the sources of long-period and very-long-period seismicity and acoustic signals are frequently described in terms of fluid dynamic processes, in particular the formation and ascent of gas slugs within the magma column and their bursting at the surface. To investigate pressure changes associated with these processes, two-phase...
The Colorado front range: anatomy of a Laramide uplift
Karl S. Kellogg, Bruce Bryant, John C. Reed
2004, Book chapter, GSA Field Guide
Along a transect across the Front Range from Denver to the Blue River valley near Dillon, the trip explores the geologic framework and Laramide (Late Cretaceous to early Eocene) uplift history of this basement-cored mountain range. Specific items for discussion at various stops are (1) the sedimentary and structural record...
A geologic framework for mineralization in the western Brooks Range
Lorne E. Young
2004, Economic Geology (99) 1281-1306
The Brooks Range is a 950-km-long north-vergent fold and thrust belt, which was formed during Mesozoic convergence of the continental Arctic Alaska terrane and the oceanic Angayucham terrane and was further shortened and uplifted in Tertiary time. The Arctic Alaska terrane consists of parautochthonous rocks and the Endicott Mountains and...
Geochemical differentiation of Silurian from Devonian crude oils in eastern Algeria
Kenneth E. Peters, Steve Creaney
Ronald J. Hill, Joel Leventhal, Zeev Aizenshtat, Mary Jo Baedecker, George Claypool, Robert P. Eganhouse, Martin B. Goldhaber, Kenneth E. Peters, editor(s)
2004, Book chapter, Geochemical investigations in earth and space science: A tribute to Isaac R. Kaplan
The ability to distinguish crude oils generated from prolific Silurian and Devonian source rocks provides a means to map their petroleum systems and thereby reduce exploration risk in North Africa. Routine geochemical analyses commonly fail to reliably separate these oils. This study demonstrates that non-routine analyses, such as compound-specific...
Natural hazards in El Salvador
William Rose, J.J. Bommer, Dina Lopez, Michael J. Carr, Jon J. Major
2004, GSA Special Papers (375)
No abstract available. ...
Structure of the Red Dog District, western Brooks Range, Alaska
Jean-Pierre P. de Vera, K. R. McClay
2004, Economic Geology (99) 1415-1434
The Red Dog district of the western Brooks Range of northern Alaska, which includes the sediment-hosted Zn-Pb-Ag ± Ba deposits at Red Dog, Su-Lik, and Anarraaq, contains one of the world's largest reserves of zinc. This paper presents a new model for the structural development of the area and shows...
Important features of Sustainable Aggregate Resource Management
Slavko V. Solar, Deborah J. Shields, William H. Langer
2004, Geologija (47) 99-108
Every society, whether developed, developing or in a phase of renewal following governmental change, requires stable, adequate and secure supplies of natural resources. In the latter case, there could be significant need for construction materials for rebuilding infrastructure, industrial capacity, and housing. It is essential that these large-volume materials be...
40Ar/39Ar Dating of Zn-Pb-Ag Mineralization in the Northern Brooks Range, Alaska
Melanie B. Werdon, Paul W. Layer, Rainer J. Newberry
2004, Economic Geology (99) 1323-1343
The 40Ar/39Ar laser step-heating method potentially can be used to provide absolute ages for a number of formerly undatable, low-temperature ore deposits. This study demonstrates the use of this method by determining absolute ages for Zn-Pb-Ag sediment-hosted massive sulfide deposits and vein-breccia occurrences found throughout a 300-km-long, east-west-trending belt in...
