File:Saint Peter Sandstone USGS.jpg

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Saint_Peter_Sandstone_USGS.jpg (615 × 305 pixels, file size: 272 KB, MIME type: image/jpeg)

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Description
English: The Saint Peter Sandstone is a poorly-cemented nearly-pure quartz sandstone that lies in the cratonic interior of the upper Midwestern United States.
Date
Source US Geological Survey: Ground Water Atlas of the United States: Iowa, Michigan, Minnesota, Wisconsin - Cambrian-Ordovician aquifer system. Figure 103. Report at http://pubs.usgs.gov/ha/ha730/ch_j/J-text8.html. Image URL: http://pubs.usgs.gov/ha/ha730/ch_j/jpeg/J103.jpeg.
Author United States Geological Survey
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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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Date/TimeThumbnailDimensionsUserComment
current18:02, 1 November 2008Thumbnail for version as of 18:02, 1 November 2008615 × 305 (272 KB)Awickert (talk | contribs){{Information |Description={{en|1=The Saint Peter Sandstone is a poorly-cemented nearly-pure quartz sandstone that lies in the cratonic interior of the upper Midwestern United States.}} |Source=US Geological Survey: Ground Water Atlas of the United States

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