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Quantitative paleoclimatic reconstructions from late Pleistocene plant macrofossils of the Yucca Mountain region Quantitative paleoclimatic reconstructions from late Pleistocene plant macrofossils of the Yucca Mountain region

Plant macrofossil assemblages recovered from packrat (Neotoma) middens of late Pleistocene age from the present-day Mojave Desert of southern Nevada contain plant species that today live at higher elevations and/or farther north than the midden collection sites. Previous reconstructions of late Pleistocene climates from packrat midden assemblages in this region (Spaulding, 1985) assessed...
Authors
R.S. Thompson, K. H. Anderson, P. J. Bartlein

Atlas of relations between climatic parameters and distributions of important trees and shrubs in North America Atlas of relations between climatic parameters and distributions of important trees and shrubs in North America

This atlas explores the continental-scale relations between the geographic ranges of woody plant species and climate in North America. A 25-km equal-area grid of modern climatic and bioclimatic parameters was constructed from instrumental weather records. The geographic distributions of selected tree and shrub species were digitized, and the presence or absence of each species was...
Authors
Robert S. Thompson, Katherine H. Anderson, Patrick J. Bartlein

Conditions for bubble elongation in cold ice-sheet ice Conditions for bubble elongation in cold ice-sheet ice

Highly elongated bubbles are sometimes observed in ice-sheet ice. Elongation is favored by rapid ice deformation, and opposed by diffusive processes. We use simple models to show that vapor transport dominates diffusion except possibly very close to the melting point, and that latent-heat effects are insignificant. Elongation is favored by larger bubbles at pore close-off, but is nearly
Authors
R. B. Alley, J. J. Fitzpatrick

Geologic map of the Oasis Valley basin and vicinity, Nye County, Nevada Geologic map of the Oasis Valley basin and vicinity, Nye County, Nevada

No abstract available.
Authors
Christopher J. Fridrich, S.A. Minor, P. L. Ryder, J. L. Slate, R.G. Warren, T.G. Hildenbrand, D.A. Sawyer, P. P. Orkild

Secondary minerals record past percolation flux at Yucca Mountain, Nevada Secondary minerals record past percolation flux at Yucca Mountain, Nevada

No abstract available.
Authors
Brian D. Marshall, James B. Paces, Leonid A. Neymark, J. F. Whelan, Zell E. Peterman
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