Explanation:
4.The Great Unconformity of Powell in the Grand Canyon is a regional unconformity that separates the Tonto Group from the underlying, faulted and tilted sedimentary rocks of the Grand Canyon Supergroup and vertically foliated metamorphic and igneous rocks of the Vishnu Basement Rocks.
5. They may form at all types of plate boundaries, but the thickest sedimentary rock accumulations occur at convergent plate boundaries. Metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. 6. One of the best-preserved records of these events is in the bottom of the Grand Canyon—in a package of sedimentary strata known as the Tonto Group.
<em> I hope this helps</em>
What? I don’t understand. Explain the question better and then I can answer it.
Cultural imperalism is the answer
