Friday fauxld: liesegang banding at Giant City - Mountain Beltway

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 …

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Illinois Botanizer: Liesegang Banding in Southern Illinois

Mountain Beltway - AGU Blogosphere

Friday fold: Crumpled Carboniferous cyclothems - Mountain Beltway - AGU Blogosphere

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Mountain Beltway - AGU Blogosphere

Mountain Beltway - AGU Blogosphere

Mountain Beltway - AGU Blogosphere

Illinois Botanizer: Liesegang Banding in Southern Illinois

Illinois Botanizer: Liesegang Banding in Southern Illinois

Friday fauxld: liesegang banding at Giant City - Mountain Beltway - AGU Blogosphere

Mountain Beltway - AGU Blogosphere

Ontario's Bradford Bypass will not undergo a federal review