Consult the figure below.Marine magnetic anomaly belts are widest when and where ________. 
A) continents are joined to form supercontinents
B) seafloor spreading rates are relatively rapid
C) seafloor spreading rates are relatively slow
D) supercontinents first began to rift apart
Correct Answer:
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Q40: A great boost in seafloor exploration and
Q41: Regions of the sea floor with negative
Q42: Marine magnetic anomalies result from seafloor spreading
Q43: Regions of the sea floor with positive
Q44: Earth's magnetic reversals are likely due to
Q45: Spreading rates along mid-ocean ridges have _.
A)been
Q46: By deep-sea drilling,the Glomar Challenger proved the
Q47: All basalts younger than 700,000 years old
Q48: According to the figure below,marine magnetic anomalies
Q54: Marine magnetic anomaly belts run parallel to
A)
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