Question

John wesley powell, who led the first boat trip through the grand canyon, called the feature marked by the yellow lines above "the great _________". what did he put in the blank?
A. unconformity.
B. pull-apart fault.
C. thrust fault.
D. trompe l'oeil.
E. intrusion.

Answer 1

Answer:

A. unconformity.

Explanation:

• After 1869, J. Powell set sail to explore the colorado river and the grande canyons and once has a confluences with the colorado river and the market the place with the lines in yellow has to represent the unconformity of the zones and are a buried erosional and a non-depositional surface that separates the two rocks, masses into the two surfaces and thus indicate the sediments deposited are not continuous.