What is an ophiolite a result of?
a. Divergent plate boundaries
b. Portions of continental crust squeezed and sheared onto the face of the continent
c. Parts of oceanic crust obducted onto the edges of continents
d. Continent to continent convergent boundaries
ANS: C
When oceanic crust is subducted under the continental crust there are parts that get sheared off and
transferred onto the edges of the continental crust. These assemblages are called Ophiolites and are
found on all continents. They contain metallic ores similar to those found at spreading centers.
Information can be found in the section The Confirmation of Plate Tectonics.
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