From this cross section of the Grand Canyon, what occurred between the formation of the Precambrian metamorphic rocks and the deposition of the lowest Paleozoic rocks?

Question

Quizplus · Accepted Answer

The cross section shows a significant gap in time between the Precambrian metamorphic rocks and the deposition of the lowest Paleozoic rocks. This gap is likely the result of uplift and erosion of the area, which removed any rocks that were once present between the two layers. Therefore, the correct answer is D, uplift and erosion.

From This Cross Section of the Grand Canyon, What Occurred