Multiple Choice
From this cross section of the Grand Canyon, what are the oldest rocks or structures? 
A) Late Cenozoic basalts
B) Mesozoic sedimentary rocks
C) Precambrian sedimentary and igneous rocks
D) Precambrian metamorphic rocks and granite
E) Hurricane fault and faults along the Grand Wash Cliffs
Correct Answer:
Verified
Correct Answer:
Verified
Q52: Of the following numbered units, which is
Q53: The oldest known rock found on Earth
Q54: Which of the following is NOT a
Q55: What kind of geologic feature is shown
Q56: This figure shows the geologic timescale. Which
Q58: This figure shows the main subdivisions of
Q59: What defines the boundaries between each of
Q60: Using the data in this table, determine
Q61: Which of the four numbered features on
Q62: Which of the numbered units is the