Výsledky vyhledávání - "Sidney W. Davis"

Cyclic Aggradation and Downcutting, Fluvial Response to Volcanic Activity, and Calibration of Soil-Carbonate Stages in the Western Grand Canyon, Arizona

Autor: Brent D. Turrin, Garniss H. Curtis, Ivo Lucchitta, Sidney W. Davis, Marie E. Davis

Publikováno v: Quaternary Research. 53:23-33

In the western Grand Canyon, fluvial terraces and pediment surfaces, both associated with a Pleistocene basalt flow, document Quaternary aggradation and downcutting by the Colorado River, illuminate the river's response to overload and the end of ove

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::aa7fbbaa2a4494c0c135734e865949ae
https://doi.org/10.1006/qres.1999.2098

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Early agriculture in the Eastern Grand Canyon of Arizona, USA

Autor: Mark Caffee, Sidney W. Davis, Marie E. Davis, Ivo Lucchitta, Robert C. Finkel

Publikováno v: Geoarchaeology. 15:783-798

Abandoned fields in Colorado River alluvium in the eastern Grand Canyon show signs of primitive agriculture. Presence of maize pollen in association with buried soils near Comanche Creek suggests that farming began prior to 3130 yr B.P. Cotton pollen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6805c9bd9526fa3402374d51336a00e4
https://doi.org/10.1002/1520-6548(200012)15:8<783::aid-gea3>3.0.co

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