Spreading rates along mid-ocean ridges have ________.
A)been remarkably constant through time
B)changed through time,but are the same everywhere on Earth today
C)changed through time,and today vary between 1 and 10 m/yr
D)changed through time,and today vary between 1 and 10 cm/yr

Question

Quizplus · Accepted Answer

Spreading rates along mid-ocean ridges have changed through time and today vary between 1 and 10 cm/yr. While there have been variations in spreading rates over geologic time, the current range of spreading rates along mid-ocean ridges is relatively narrow.

Spreading Rates Along Mid-Ocean Ridges Have ________