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Auteur Steven M. Condon |
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1706 - Geologic studies of the Platte River, south-central Nebraska and adjacent areas (Bulletin de U.S. Geological Survey professional paper, 1706 [01/01/2005]) / Steven M. Condon
[n° ou bulletin]
Titre : 1706 - Geologic studies of the Platte River, south-central Nebraska and adjacent areas : geologic maps, subsurface study, and geologic history Type de document : texte imprimé Auteurs : Steven M. Condon, Auteur Année de publication : 2005 Importance : 1 CD-Rom (68 p.) Présentation : 2 pl. Format : 13 x 15 cm Langues : Américain (ame) Résumé : The Platte River of south-central Nebraska was studied at three scales to place the river in its geological context and to trace its evolution through geologic time. At the largest scale the Elm Creek West and the Newark 7.5 minute quadrangles were mapped. These quadrangles are located just west and just east of Kearney and serve to illustrate the main geomorphic elements of the present Platte River Valley. The central elements of the quadrangles are the Platte River channels, islands, and bottomlands, which are flanked by terraces that step up away from the river to the north and south. Significant other elements of the landscape are eolian sand and loess deposits. The geologic maps are supplemented by topographic profiles of the mapped terraces and graphical representations of subsurface units in test wells that occur within the quadrangles. [n° ou bulletin]Exemplaires(1)
Code-barres Origine Cote Support Section Disponibilité FFS035841 2.2 USGS PP Périodiques Géographique Exclu du prêt