Beginner's Guide to Alluvial Fans and Deltas on
Landsat GeoCover Satellite Images
Alluvial Fans and Deltas are generally easy to recognize by their triangular shape. Alluvial fans are often a purple, magenta or pink color because of the exposed soil on their surface. Deltas generally are covered with vegetation and show characteristics similar to marshes. Both deltas and alluvial fans can show distributary channels branching from a main stream at their head.
The community of El Mirage is located near the bright green area at the top of the large purple alluvial fan. California U.S.A.
Organic Gems are gems formed from or by plants or animals. They might also be fossils.
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