Cretaceous conglomerate, Montana BMMT https://geologypics.com/wp-content/uploads/2017/07/geology-pics.png 0 0 Marli Miller https://geologypics.com/wp-content/uploads/2017/07/geology-pics.png Marli Miller2015-12-10 04:28:262020-04-03 04:34:13Cretaceous conglomerate, Montana
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