File:Mississipian Limestone Mackay Blaze Canyon (23657287346).jpg - Wikipedia

Major limestone quarry proposed for Parleys Canyon

Geologic Sections through the Lake City Limestone in Citrus and Levy Counties, 1951

Proposed Parleys Canyon quarry blindsided neighbors

Limestone - Wikipedia

KGS--Bull. 206, part 1--Carbonate Facies of the Swope Limestone Formation, Southeast Kansas

Kings Canyon High Basin Route: Section 6

File:Mississipian Limestone Mackay Blaze Canyon (23657287346).jpg - Wikipedia

File:Provo Canyon syncline.jpg - Wikipedia

File:Partially devitrified rhyolitic obsidian (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 1 (31863607667).jpg - Wikimedia Commons

Mosaic canyon hi-res stock photography and images - Alamy

Ivie Creek and the Molen Seep //