Grand Staircase

Graphic diagram of the area between Bryce Canyon and the Grand Canyon depicting colorful cliffs known as the Grand Staircase stepping down from Bryce to the Grand Canyon.
The Grand Staircase is a series of colorful sedimentary rock layers that extends 100 miles from Bryce Canyon to the Grand Canyon
 

The Grand Staircase is an immense sequence of sedimentary rock layers that stretch south for 100 miles (161 km) from Bryce Canyon National Park through Zion National Park and into the Grand Canyon. In the 1870s, geologist Clarence Dutton first conceptualized this region as a huge stairway ascending out of the bottom of the Grand Canyon northward with the cliff edge of each layer forming giant steps. Dutton divided this layer cake of Earth history into five steps that he colorfully named Pink Cliffs, Grey Cliffs, White Cliffs, Vermilion Cliffs, and Chocolate Cliffs. Since then, modern geologists have further divided Dutton's steps into individual rock formations.

What makes the Grand Staircase worldly unique is that it preserves more Earth history than any other place on Earth. Geologists often liken the study of sedimentary rock layers to reading a history book--layer by layer, detailed chapter by detailed chapter. Unlike igneous and metamorphic rocks, only sedimentary rocks are capable of preserving fossils. The problem is that in most places in the world, the book has been severely damaged by the rise and fall of mountains, the scouring of glaciers, etc. Usually these chapters are completely disarticulated from each other and often whole pages are just missing. Yet the Grand Staircase and the lower cliffs that comprise the Grand Canyon remain largely intact speaking to over 600 million years of continuous Earth history--from Permian - Tertiary (275- 50 mya)--with only a few paragraphs missing here and there.

Unfortunately, the Grand Staircase is such a vast region of rock that no matter where you stand on its expanse, most of it will be hidden behind the curvature of Earth. Places such as Yovimpa Point and the north slope of the Kaibab Plateau are the exception where even a non-geologist can discern the individual chapters of this colossal history book--these immense steps of Dutton's Grand Staircase.

The Grand Staircase can also (and perhaps best) be viewed from below at LeFevre Overlook along Hwy. 89A north of Jacob's Lake, Arizona.

 
Red and white rock cliffs stand in sunshine above forested cliffs below. Labels show Pink Cliffs, Grey Cliffs, White Cliffs, Vermillion Cliffs, and Kaibab Plateau.
From Yovimpa Point much of the Grand Staircase can be seen.

NPS Photo / Peter Densmore

 
View of colorful cliffs including vermillion, white, and pink
Looking from the bottom of the Grand Staircase back toward Yovimpa Point at LeFevre Overlook provides an exceptional view of the feature.

Last updated: January 7, 2021

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