Author Question: Use the geologic cross section to determine the age of rock layer D as precisely as possible. A) ... (Read 63 times)

melly21297 · **on:** Jul 14, 2018

Use the geologic cross section to determine the age of rock layer D as precisely as possible.

A) It is 40 million years old.
B) It is between 39 million years old and 25 million years old.
C) It is between 39 million years old and 17 million years old.
D) It is older than 17 million years old.

Question 2

Examine the figure that shows the sequence of strata in three Colorado Plateau national parks. Which unit(s) are shared by Grand Canyon National Park and Zion National Park?

A) Toroweap and Kaibab
B) Kaibab and Monekopi
C) Moenkopi and Chinle
D) Kaibab only