Image:North america rock types.jpg
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Image in higher resolution (644 × 2146 pixel, file size: 641 KB, MIME type: image/jpeg)
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This is a file from the Wikimedia Commons. The description on its description page there is shown below. |
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Rock type maps for the North America Tapestry of Time and Terrain map.
Four smaller maps show the distribution of four principal types of rock: sedimentary, volcanic, plutonic and metamorphic.
 Metamorphic rock
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 Plutonic rock
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 Sedimentary rock
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 Volcanic rock
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Source
Home: http://pubs.usgs.gov/imap/i2781/
Image: http://pubs.usgs.gov/imap/i2781/i2781_c_low.pdf 144 dpi, encoded to 72 dpi JPEG, compressed slightly to fit within Wikipedia 2MB limit.
Source: English Wikipedia, original upload 15 April 2005 by SEWilco
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This image is in the public domain because it contains materials that originally came from the United States Geological Survey, an agency of the United States Department of Interior. For more information, see the official USGS copyright policy |
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File links
The following pages on the English Wikipedia link to this file (pages on other projects are not listed):
- North America
- Rock (geology)
- Geology of the United States of America
- User:SEWilco/Images
- Wikipedia:Featured picture candidates/April-2005
- Wikipedia:Featured picture candidates/North america terrain 2003 map.jpg
