Animas_Valley_CO_1903.jpg (700 × 493 pixels, file size: 262 KB, MIME type: image/jpeg)

Summary

Description
English: Animas Valley above Animas City — Colorado.
  • There is topographic unconformity between the maturely eroded upland and the youthful gulches cutting the lower slope. The steepness of that slope and the truncation of interstream spurs are largely due to glacial abrasion.
  • The apparent old age of the stream is due to its meandering on an alluvial flat. This flat is underlain by silt deposited above the dam formed by the Wisconsin terminal moraine. As the outlet through the dam was deepened, many oxbows were cut off. Similar conditions are found in several other valleys.
  • La Plata County. October 20, 1903. Plate 15, U.S. Geological Survey Professional paper 166. 1932. Professional Paper-0166

Digital File:ccw00594 ID. Cross, C.W. 594

Original found at [1] using keywords "Animas" and "Valley."
Source USGS
Author USGS

Licensing

Public domain
This image is in the public domain in the United States because it only contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy.

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  • 2006-11-20 23:19 Cuppysfriend 700×493× (268139 bytes) [[Animas Valley]] above [[Durango, Colorado]]. There is topographic unconformity between the maturely eroded upland and the youthful gulches cutting the lower slope. The steepness of that slope and the truncation of interstream spurs are largely due

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applies to jurisdiction: United States
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current04:50, 8 October 2009Thumbnail for version as of 04:50, 8 October 2009700 × 493 (262 KB)File Upload Bot (Magnus Manske) {{BotMoveToCommons|en.wikipedia|year={{subst:CURRENTYEAR}}|month={{subst:CURRENTMONTHNAME}}|day={{subst:CURRENTDAY}}}} {{Information |Description={{en|en:Animas Valley above en:Animas City, Colorado. There is topographic unconformity between

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