Image:Rock cycle nps.PNG

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Diagram describing the rock cycle, from [1]

This article or image contains material based on a work of a National Park Service employee, created during the course of the person's official duties. As a work of the U.S. federal government, such work is in the public domain. See the NPS website and NPS copyright policy for more information.

This image is a work of a United States Geological Survey employee, taken or made during the course of the person's official duties. As a work of the United States Government, the image is in the public domain. For more information, see the USGS copyright policy.

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(del) (cur) 14:22, 26 July 2005 . . PDH (Talk | contribs) . . 960×718 (98,424 bytes) (Diagram describing the rock cycle, from [http://www2.nature.nps.gov/geology/usgsnps/rxmin/rockcycle.pdf] {{PD-USGov-Interior-NPS}} {{PD-USGov-Interior-USGS}})