Book Chapters
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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.
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.
Filter Total Items: 6197
Use of 13C NMR and FTIR for elucidation of degradation pathways during natural litter decomposition and compositing. II. Changes in leaf composition after senescence Use of 13C NMR and FTIR for elucidation of degradation pathways during natural litter decomposition and compositing. II. Changes in leaf composition after senescence
No abstract available.
Authors
Robert L. Wershaw, K. R. Kennedy, J.E. Henrich
Seismic profiling constraints on the evolution of the central Brooks Range, Arctic Alaska Seismic profiling constraints on the evolution of the central Brooks Range, Arctic Alaska
No abstract available.
Authors
E. S. Wissinger, A. R. Levander, J. S. Oldow, Gary S. Fuis, W. J. Lutter
Tertiary uplift of the Mt. Doonerak antiform, central Brooks Range, Alaska: Apatite fission track evidence from the Trans-Alaska crustal transect Tertiary uplift of the Mt. Doonerak antiform, central Brooks Range, Alaska: Apatite fission track evidence from the Trans-Alaska crustal transect
The Mt. Doonerak antiform is a northeast-trending, doubly plunging antiform located along the axial part of the central Brooks Range. This antiform is a crustal-scale duplex estimated to have a vertical displacement of ~15 km. The antiform folds the Amawk thrust, which separates relatively less displaced lower plate rocks in a window in the core of the antiform from allochthonous upper...
Authors
P. B. O’Sullivan, Thomas E. Moore, J.M. Murphy
Development of an RNase protection assay for rapid detection of genetic variation in the fish rhabdovirus viral haemorrhagic septicaemia virus Development of an RNase protection assay for rapid detection of genetic variation in the fish rhabdovirus viral haemorrhagic septicaemia virus
No abstract available.
Authors
M. Snow, Gael Kurath, C.O. Cunningham, D.M. Smail
Tracing nitrogen sources and cycling in catchments Tracing nitrogen sources and cycling in catchments
This chapter focuses on the uses of isotopes to understand water chemistry.I Isotopic compositions generally cannot be interpreted successfully in the absence of other chemical and hydrologic data. The chapter focusses on uses of isotopes in tracing sources and cycling of nitrogen in the water-component of forested catchment, and on dissolved nitrate in shallow waters, nutrient uptake...
Authors
Carol Kendall
Tracing of weathering reactions and water flowpaths: A multi-isotope approach Tracing of weathering reactions and water flowpaths: A multi-isotope approach
This chapter discusses the importance of using isotopes in a complementary manner, primarily to constrain and enrich models developed from hydrologic and chemical data. Isotopes are viewed as tools for testing rather than developing hypotheses, particularly in studies operating under tight budgetary constraints. Water isotopes are very useful tools for determining water sources in...
Authors
Tomas D. Bullen, Carol Kendall
Evidence for buoyancy regulation as a speciation mechanism in Great Lakes ciscoes Evidence for buoyancy regulation as a speciation mechanism in Great Lakes ciscoes
We present evidence for a hypothesis that the deepwater ciscoes (Coregonus spp.) of the Laurentian Great Lakes were selected for buoyancy-regulation traits that facilitated planktivory on Mysis relict, a crustacean that undertakes extensive diel vertical migration (DVM). We assessed the vertical distribution and behavior of bloaters (C. hoyi) in Lake Michigan with bottom and mid-water...
Authors
R.L. Eshenroder, Ray L. Argyle, Leslie M. TeWinkel
Field trip road log—geology and tectonics of the Gualala block Field trip road log—geology and tectonics of the Gualala block
The Pacific Section, S.E.P.M. 1998 Fall Field Trip will traverse rocks of the Gualala block of northern California. Seven stops (Figure 1) will be made in one and a half days and will examine a variety of geologic features and rock types in this significant area. The field trip is an outgrowth of a symposium held at the 1998 Annual Meeting of the Pacific Section, S.E.P.M. in Ventura...
Coastal Louisiana Coastal Louisiana
No abstract available
Authors
James G. Gosselink, J. Coleman, Robert E. Stewart
Military geology unit of the U.S. Geological Survey during World War II Military geology unit of the U.S. Geological Survey during World War II
On June 24, 1942, the temporary Military Geology Unit of the U.S. Geological Survey was formalized after the U.S. Army Corps of Engineers requested them to prepare terrain intelligence studies to meet wartime priorities. The entire Military Geology Unit wartime roster was 114 professionals, including 88 geologists, 11 soil scientists, and 15 other specialists; 14 were women. Assisting...
Authors
Maurice J. Terman
General philosophy 5: Concerning nonuniqueness General philosophy 5: Concerning nonuniqueness
There are models we might like to accept that just dont fit gravity, magnetic, or electrical data. This benefit of modeling is important. It forces the interpreter to prove that an interpretation is possible, and it eliminates impossible models even seismic models. A simple depth estimate may be all the model one needs to eliminate an idea. Other times, we need a careful and detailed...
Authors
D. A. Chapin