The Canyon is a Book of Revelations in the rock ... and corals. These layers of sedimentary rock were deposited in Cambrian time, when another shallow sea covered this region.

"Sedimentary rocks are hard to date" said Crossey "but ... More information: Carol Dehler et al, The Cambrian of the Grand Canyon: Refinement of a Classic Stratigraphic Model, GSA Today (2024).

DR DAVE THAYER: On average, yeah. If you just took the whole length of just the sedimentary rocks in the canyon that have been deposited here. MICHIO KAKU: Uh-huh. DR DAVE THAYER: Floods and ...

Together with Zion and Grand Canyon National Parks, Bryce Canyon is part of a geologic wonder known as the Grand Staircase, an immense area of rock with layered sedimentary formations ranging from 600 ...