Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Richard F. Madole"'
Constraints on the age of the Great Sand Dunes, Colorado, from subsurface stratigraphy and OSL dates
Publikováno v:
Quaternary Research. 80:435-446
The age of the Great Sand Dunes has been debated for nearly 150 yr. Seven ages ranging from Miocene to late Holocene have been proposed for them. This paper presents new information–chiefly subsurface stratigraphic data, OSL dates, and geomorphic e
Publikováno v:
Scientific Investigations Map.
Autor:
Richard F. Madole
Publikováno v:
Quaternary Research. 78:197-208
Stratigraphic analyses and radiocarbon geochronology of alluvial deposits exposed along the Roaring River, Colorado, lead to three principal conclusions: (1) the opinion that stream channels in the higher parts of the Front Range are relics of the Pl
Publikováno v:
Geomorphology. 99:99-119
Over the past 100 yr, several hypotheses have been proposed for the origin and age of the Great Sand Dunes. These hypotheses differ widely in the descriptions of dune morphometry, the immediate source of eolian sand, and when sand transport occurred.
Autor:
Alan R. Nelson, Richard F. Madole, Sherry S. Agard, Gerald D. Osborn, Cheryl Jaworowski, Brainerd Mears, Marith C. Reheis, Robert C. Palmquist
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::03d86a3b0ba0232ad486053c56c84024
https://doi.org/10.1130/dnag-gna-k2.407
https://doi.org/10.1130/dnag-gna-k2.407
Autor:
John P. Bluemle, William J. Wayne, Donald A. Coates, James S. Aber, Brainerd Mears, Robert N. Bergantino, Wayne M. Sutherland, James E. Martin, Maurice E. Cooley, Richard F. Madole, Sherry S. Agard, Roger B. Morrison
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e44864549383ac38d3db89054af7f75
https://doi.org/10.1130/dnag-gna-k2.441
https://doi.org/10.1130/dnag-gna-k2.441
Autor:
Richard F. Madole, Tyler M. Allred, Gwen Kittel, Jonathan M. Friedman, E. D. Andrews, Eleanor R. Griffin, Gregor T. Auble
Publikováno v:
Western North American Naturalist. 66:78-91
This study explores how the relationship between flow and riparian vegetation varies along a montane river. We mapped occurrence of woody riparian plant communities along 58 km of the San Miguel River in southwest- ern Colorado. We determined the rec
Autor:
Paula B. Maat, Thomas W. Stafford, Charles A. Bush, James B. Swinehart, Daniel R. Muhs, Shannon A. Mahan, Scott D. Cowherd, Richard F. Madole
Publikováno v:
Quaternary Research. 48:162-176
The age of sand dunes in the Nebraska Sand Hills has been controversial, with some investigators suggesting a full-glacial age and others suggesting that they were last active in the late Holocene. New accelerator mass spectrometry radiocarbon ages o