Glacial striations on quartzite, Pipestone National Monument - Pipestone, Minnesota

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Glacial striations on quartzite from Sioux quartzite formation. Sioux Quartzite is a Proterozoic (precambrian) rock found near the intersection of Minnesota, South Dakota, and Iowa. The rock units correlate throughout the upper midwestern and southwestern United States.

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

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