The escarpments of the Grand Staircase must have formed by erosion sometime after the deposition of rocks now exposed in Bryce Canyon NP.

Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
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Thinking about the cross-section that links the Grand Canyon with Zion and Bryce Canyon (across
the Grand Staircase), which of the following statements is false?
The escarpments of the Grand Staircase must have formed by erosion sometime after the deposition of
rocks now exposed in Bryce Canyon NP.
The Navajo Sandstone likely exists as a thick layer deep beneath the surface at Bryce Canyon NP.
Precambrian 'basement' rocks exposed in the deepest part of the Grand Canyon are likely restricted to that
area and do not extend beneath the surface near Zion and Bryce.
Each of the colored escarpments in the Grand Staircase (e.g., White Cliffs, Pink Cliffs) is the eroded edge of
specific formations.
The rocks composing Bryce Canyon may once have covered the area of the Grand Canyon, but were later
eroded away.
Transcribed Image Text:Thinking about the cross-section that links the Grand Canyon with Zion and Bryce Canyon (across the Grand Staircase), which of the following statements is false? The escarpments of the Grand Staircase must have formed by erosion sometime after the deposition of rocks now exposed in Bryce Canyon NP. The Navajo Sandstone likely exists as a thick layer deep beneath the surface at Bryce Canyon NP. Precambrian 'basement' rocks exposed in the deepest part of the Grand Canyon are likely restricted to that area and do not extend beneath the surface near Zion and Bryce. Each of the colored escarpments in the Grand Staircase (e.g., White Cliffs, Pink Cliffs) is the eroded edge of specific formations. The rocks composing Bryce Canyon may once have covered the area of the Grand Canyon, but were later eroded away.
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