Publications
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Composition, dynamics, and fate of leached dissolved organic matter in terrestrial ecosystems: Results from a decomposition experiment
Fluxes of dissolved organic matter (DOM) are an important vector for the movement of carbon (C) and nutrients both within and between ecosystems. However, although DOM fluxes from throughfall and through litterfall can be large, little is known about the fate of DOM leached from plant canopies, or from the litter layer into the soil horizon. In this study, our objectives were to determine the impo
Authors
C.C. Cleveland, J. C. Neff, A.R. Townsend, E. Hood
Vital signs monitoring plan for the Klamath Network: Phase I report
This report chronicles the Phase 1 stage of the vital signs monitoring program for the Klamath Network. It consists of two chapters and eleven appendixes. The purposes of Chapter One are to 1) describe the network administrative structure and approach to planning; 2) introduce the Klamath Network parks, their resources, and environmental settings; 3) explain the need for monitoring changes in reso
Authors
Daniel Sarr, Dennis Odion, Robert E. Truitt, Erik A. Beever, Sarah Shafer, Andrew Duff, Sean B. Smith, Windy Bunn, Judy Rocchio, Eli Sarnat, John Alexander, Steve Jessup
Quaternary sea level history of the United States
No abstract available.
Authors
D.R. Muhs, J.F. Wehmiller, K. R. Simmons, L.L. York
Eolian sediments
No abstract available.
Authors
A.J. Busacca, J. E. Beget, H. W. Markewich, D.R. Muhs, N. Lancaster, M.R. Sweeney
Late Quaternary stratigraphy and geochronology of the western Killpecker Dunes, Wyoming, USA
New stratigraphic and geochronologic data from the Killpecker Dunes in southwestern Wyoming facilitate a more precise understanding of the dune field's history. Prior investigations suggested that evidence for late Pleistocene eolian activity in the dune field was lacking. However, luminescence ages from eolian sand of ???15,000 yr, as well as Folsom (12,950-11,950 cal yr B.P.) and Agate Basin (12
Authors
J. H. Mayer, S. A. Mahan
Isotopic, geochemical, and temporal characterization of Proterozoic basement rocks in the Quitovac region, northwestern Sonora, Mexico: Implications for the reconstruction of the southwestern margin of Laurentia
A detailed geochemical characterization of 19 representative Proterozoic basement rocks in the Quitovac region in northwestern Sonora, Mexico, has identified two distinct Paleoproterozoic basement blocks that coincide spatially with the previously proposed Caborca and "North America" blocks. New U-Pb zircon geochronology revises their age ranges, the Caborca (1.78-1.69 Ga) and "North America" (1.7
Authors
A. Iriondo, W. R. Premo, Luis M. Martínez-Torres, J. R. Budahn, William W. Atkinson, D. F. Siems, B. Guaras-Gonzalez
Use of naturally occurring mercury to determine the importance of cutthroat trout to Yellowstone grizzly bears
Spawning cutthroat trout (Oncorhynchus clarki (Richardson, 1836)) are a potentially important food resource for grizzly bears (Ursus arctos horribilis Ord, 1815) in the Greater Yellowstone Ecosystem. We developed a method to estimate the amount of cutthroat trout ingested by grizzly bears living in the Yellowstone Lake area. The method utilized (i) the relatively high, naturally occurring concentr
Authors
L.A. Felicetti, C.C. Schwartz, R. O. Rye, K.A. Gunther, J. G. Crock, M.A. Haroldson, L. Waits, C.T. Robbins
Late Quaternary glaciation of the Upper Soca River Region (Southern Julian Alps, NW Slovenia)
Extent of Late Quaternary glaciers in the Upper Soc??a River Region (Southern Julian Alps, SE Europe) has been analyzed using a combination of geological mapping, glaciological modeling, and sediment dating (radiocarbon, U/Th series and Infrared Stimulated Luminescence-IRSL). Field investigations focused mainly on relatively well preserved Quaternary sequences in the Bovec Basin, an intramontane b
Authors
Milos Bavec, Slawek M. Tulaczyk, Shannon Mahan, Gregory M. Stock
Uranium-series coral ages from the US Atlantic Coastal Plain-the "80 ka problem" revisited
Uranium series coral ages for emergent units from the passive continental margin US Atlantic Coastal Plain (ACP) suggest sea level above present levels at the end of marine oxygen isotope stage (MIS) 5, contradicting age-elevation relations based on marine isotopic or coral reef models of ice equivalent sea level. We have reexamined this problem by obtaining high precision 230Th/238U and 231Pa/235
Authors
J.F. Wehmiller, K. R. Simmons, H. Cheng, R. Lawrence Edwards, J. Martin-McNaughton, L.L. York, D.E. Krantz, C.-C. Shen
Geochemistry of dust in the Exploratory Studies Facility, Yucca Mountain, Nevada
No abstract available.
Authors
Zell E. Peterman, James B. Paces, Leonid A. Neymark, D. Hudson
Summary of Chlorine-36 validation studies at Yucca Mountain, Nevada
No abstract available.
Authors
James B. Paces, Zell E. Peterman, Leonid A. Neymark, G. J. Nimz, M. Gascoyne, Brian D. Marshall
U-series disequilibrium as a test for unsaturated-zone hydrologic models at Yucca Mountain, Nevada
No abstract available.
Authors
James B. Paces, Leonid A. Neymark