Intermediate rocks like andesite and diorite ________.
A)are major constituents of the oceanic crust
B)rarely contain plagioclase feldspar, pyroxenes or amphiboles
C)form mainly in convergent continental margins
D)contain the semiprecious gems beryl, topaz, and tourmaline

Question

Quizplus · Accepted Answer

Intermediate rocks like andesite and diorite form mainly in convergent continental margins where two tectonic plates are colliding. They are not major constituents of the oceanic crust and do not typically contain beryl, topaz, or tourmaline. While they may contain plagioclase feldspar, pyroxenes, or amphiboles, it is not accurate to say that they rarely contain them.

Intermediate Rocks Like Andesite and Diorite ________