The sand dunes in White Sands National Monument, NM shown in (A) may someday be preserved in sandstone, a sedimentary rock
made of sand, like that shown in (B). If you made a sand dune into solid rock and then cut it in half, it would look like the canyon wall in (B). This rock is evidence that millions of years ago sand dunes were a part of this landscape.
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(A) Bruce Molnia, Terra Photographics and (B) Martin Miller University of Oregon. Both images courtesy of Earth Science World Imagebank.
Shop Windows to the Universe Science Store!
The Fall 2010 issue of The Earth Scientist
, focuses on rocks and minerals, including articles on minerals and mining, the use of minerals in society, and rare earth minerals, and includes 3 posters!
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