Consult the figure below.Compared with amphibolite metamorphic facies,greenschist facies
A) consist of lower-grade rocks.
B) consist of higher-grade rocks.
C) involve partially melted rocks.
D) have the same grade but a different chemistry due to different protoliths.

Question

Consult the figure below.Compared with amphibolite metamorphic facies,greenschist facies 
A) consist of lower-grade rocks. 
B) consist of higher-grade rocks. 
C) involve partially melted rocks. 
D) have the same grade but a different chemistry due to different protoliths.

Quizplus · Accepted Answer

The greenschist facies is a lower-grade metamorphic facies compared to the amphibolite facies. This is reflected in the lower temperature and pressure conditions of the greenschist facies metamorphism. Therefore, choice A is correct. Choices B and C are incorrect as they describe higher-grade metamorphic facies. Choice D could be true, but it is not directly supported by the information given in the figure.

Consult the Figure Below