page_title: Grant Lake Formation
hierarchical_section_title: Grant Lake Formation
caption_attribution_description: English: Grant Lake Formation (Upper Ordovician) along the Idlewild Bypass (KY-8) in Boone County, Kentucky (N 39.081120°, W 84.792434°).
context_page_description: The Grant Lake Formation is a geologic formation in Ohio and Kentucky. It preserves fossils dating back to the Ordovician period.
context_section_description: The Grant Lake Formation is a geologic formation in Ohio and Kentucky. It preserves fossils dating back to the Ordovician period.
caption: Grant Lake Formation exposed in Boone County, Kentucky.
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