A limestone quarry in Dupo, Illinois. Illinois is nowhere near the ocean today, but was covered by a shallow sea when this limestone formed about 300 million years ago. The limestone is mined to make cement.
Image 40274 is a 325 by 600 pixel WebP
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Jul10 13
Last Modified: 2014-08-27 10:23:17
Permanent URL: https://serc.carleton.edu/download/images/40274/photo_dupo_il_limestone.webp
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Provenance
Photo taken by Joy Branlund, Southwestern Illinois College.
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