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- The Butte Creek Volcanic Sandstone is a geologic formation in Oregon. It preserves fossils dating back to the Neogene period. Earth sciences portal Oregon...1 KB (59 words) - 21:51, 2 July 2022
The Butte Creek Volcanic Sandstone is a geologic formation in Oregon. It preserves fossils dating back to the Neogene period. Earth sciences portal Oregon... 1 KB (59 words) - 21:51, 2 July 2022 |