Multiple Choice
The fact that no oceanic crust older than 180 million years (Jurassic) has been found indicates what?
A) The break-up of Pangaea must have occurred before the Jurassic Period.
B) The ocean basins must be older than Jurassic age.
C) The movement of continents must have begun no earlier than the Jurassic Period.
D) The break-up of Pangaea must have begun at about the same time as these oldest basalts were formed.
E) The movement of continents must have begun no earlier than the Jurassic Period AND The break-up of Pangaea must have begun at about the same time as these oldest basalts were formed.
Correct Answer:

Verified
Correct Answer:
Verified
Q30: At transform plate boundaries,_.<br>A) lithosphere is neither
Q31: Volcanoes are found at these two types
Q32: During the Triassic,a number of rift related
Q33: When a continental plate diverges from another
Q34: A transform plate boundary underlies the Alps
Q36: How does the introduction of a geographic
Q37: Explain how mountain ranges can be used
Q38: Describe how the two models for the
Q40: What are the heat sources for each
Q54: The seafloor spreading hypothesis indicates what as