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Showing results for tags 'arroyo'.
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From the album: Permian
These sand grains were deposited by a river in the Early Permian of what would be North Texas. Iron oxides (e.g. hematite) color these sediments red (they weren't originally).-
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From the album: Permian
Sandstone collected from the Arroyo formation (Clear Form Group) of North Texas. The color transition represents a transition between a river deposit (red) and a floodplain deposit (white). See "Geologic Guide of Baylor County, Texas"-
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I discovered this rock at the bottom of a dried arroyo in New Mexico this past June. I'm thinking it is a mud fossil. What do you think?
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- mud fossil
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