Results: 31 - 40 of 89
Jun 23, 2015
Open File Report
… 220 Ma of non-deposition, erosion, and karstification, which …
Dec 31, 1966
Bulletin
… owing to nondeposition or erosion. The lower and middle …
Dec 31, 2006
Geo-Note
… is a transgressive surface of erosion, and indicates a …
Dec 31, 2001
Information Series
… succeeding ice ages, and river erosion. To our west, the Rocky …
Nov 09, 2005
Map
… modification by glacial erosion. Major buried valleys lie …
Dec 31, 1982
Bulletin
… of the soils to water erosion is discussed briefly, and the soils are rated for erosion hazard. Physical and …
Dec 31, 1984
Bulletin
… soil present and the extent of erosion, if any. … Macyk, T.M. … …
Dec 31, 1989
Open File Report
… unit, and 2) post-depositional erosion which removed the …
Feb 28, 2007
Earth Sciences Report
… exhibit features indicative of erosion by subglacial meltwater …
Dec 31, 1985
Open File Report