Close up of glacially polished surface of a red quartzite cobble, pre-Kansas till outlier

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Cobble from pre-Kansas (Nebraskan?) till. Found on edge of driftless area in Minnesota

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Size: 5184px × 3456px
Location: Wilson, Minnesota, USA
Photo credit: © Lyroky / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: age, area, cemented, diagenisis, driftless, geology, glacial, ice, minnesota, outlier, pre-kansas, quartz, quartzite, red, rock, sample, sandstone, sheet, specimen