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Today, the Friday fold is a fake! Looks like a nice set of asymmetric antiforms and synforms, right? But it ain’t! It’s naturally wiggly; primary not tectonic. The photo shows nothing more than differential erosion of hematite that was deposited by groundwater in permeable sandstone. It’s Liesegang banding! These hematite blobs are in the sandstone at Giant City State Park, south of Carbondale, Illinois. Several are cylindrical in form, presumably …
Friday fauxld: liesegang banding at Giant City - Mountain Beltway - AGU Blogosphere
Mountain Beltway - AGU Blogosphere
Mountain Beltway - AGU Blogosphere
Greed is not a good thing': More than 50 protest Bill 23 in Midland - Midland News
Splotchy Liesgang banding - Mountain Beltway - AGU Blogosphere
Mountain Beltway - AGU Blogosphere
Liesegang banding in Pennsylvanian sandstones, Bolt Mountain, West Virginia - Mountain Beltway - AGU Blogosphere
Tree rings help determine date of ancient twin earthquakes in Pacific Northwest
Rocks, moss and muddy tree roots
Mountain Beltway - AGU Blogosphere
