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The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse more than 5,500 book chapters authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.
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An atlas of Mars sedimentary rocks as seen by HiRISE
Images of distant and unknown places have long stimulated the imaginations of both explorers and scientists. The atlas of photographs collected during the Hayden (1872)expedition to the Yellowstone region was essential to its successful advocacy and selection in 1872 as America’s first national park. Photographer William Henry Jackson of the Hayden expedition captured the public’s imagination and
Authors
Ross Beyer, Kathryn M. Stack, Jennifer L. Griffes, Ralph E. Milliken, Kenneth E. Herkenhoff, Shane Byrne, John W. Holt, John P. Grotzinger
Appendix A: other methods for estimating trends of Arctic birds
The Arctic PRISM was designed to determine shorebird population size and trend. During an extensive peer review of PRISM, some reviewers suggested that measuring demographic rates or monitoring shorebirds on migration would be more appropriate than estimating population size on the breeding grounds. However, each method has its own limitations. For demographic monitoring, an unbiased estimate base
Authors
Jonathan Bart, Stephen Brown, R.I. Guy Morrison, Paul A. Smith
Application of radiotelemetry to wildlife conservation in mountainous Asian landscapes
No abstract available.
Authors
M.S. Mitchell, L.N. Rich, L. S. Mills
Assessment of urbanization patterns and trends in the Gulf of Mexico region of the southeast United States with Landsat and nighttime lights imagery
No abstract available.
Authors
George Z. Xian, Collin G. Homer
Avian community responses to vegetation structure within chained and hand-cut pinyon-juniper woodlands on the Colorado Plateau
We investigated relationships between breeding birds and vegetation characteristics in fuels-reduction treatment areas within pinyon-juniper woodlands at locations over the Colorado Plateau. The goal of this study was to document differences in avian community responses to two types of pinyon-juniper fuels-reduction treatments (chained vs. hand-cut), relative to control sites. We selected 73 veget
Authors
Charles van Riper, Claire Crow
Basin-floor Lake Bonneville stratigraphic section as revealed in paleoseismic trenches at the Baileys Lake site, West Valley fault zone, Utah
Recent paleoseismic trenching on the Granger fault of the West Valley fault zone in Salt Lake County, Utah, exposed a nearly complete section of late Pleistocene Lake Bonneville deposits, and highlights challenges related to accurate interpretation of basin-floor stratigraphy in the absence of numerical age constraints. We used radiocarbon and luminescence dating as well as ostracode biostratigra
Authors
Michael D. Hylland, Christopher B. DuRoss, Greg N. McDonald, Susan S. Olig, Charles G. Oviatt, Shannon A. Mahan, Anthony J. Crone, Stephen Personius
Basins in ARC-continental collisions
Arc-continent collisions occur commonly in the plate-tectonic cycle and result in rapidly formed and rapidly collapsing orogens, often spanning just 5-15 My. Growth of continental masses through arc-continent collision is widely thought to be a major process governing the structural and geochemical evolution of the continental crust over geologic time. Collisions of intra-oceanic arcs with passive
Authors
Amy E. Draut, Peter D. Clift
Bias from false-positive detections and strategies for their removal in studies using telemetry
No abstract available.
Authors
John W. Beeman, Russell W. Perry
Biostratigraphy and chronostratigraphy of the Cambrian-Ordovician great American carbonate bank
The carbonate strata of the great American carbonate bank (GACB) have been subdivided and correlated with ever-increasing precision and accuracy during the past half century through use of the dominant organisms that evolved on the Laurentian platform through the Cambrian and the Ordovician. Trilobites and conodonts remain the primary groups used for this purpose, although brachiopods, both calcar
Authors
John F. Taylor, John E. Repetski, James D. Loch, Stephen A. Leslie
Bothriocephalus acheilognathi Yamaguti (Asian Tapeworm)
No abstract available.
Authors
Anindo Choudhury, Rebecca Cole
Cambrian-lower Middle Ordovician passive carbonate margin, southern Appalachians
The southern Appalachian part of the Cambrian–Ordovician passive margin succession of the great American carbonate bank extends from the Lower Cambrian to the lower Middle Ordovician, is as much as 3.5 km (2.2 mi) thick, and has long-term subsidence rates exceeding 5 cm (2 in.)/k.y. Subsiding depocenters separated by arches controlled sediment thickness. The succession consists of five supersequen
Authors
J. Fred Read, John E. Repetski