Question

question 6 (0.83 points)
due to pressure applied during formation, foliated metamorphic rocks are usually
__________ than the parent rock
less dense
more dense
rounder
bigger
question 7 (0.83 points)
at what temperature would granite be expected to substantially metamorphose to
gneiss? (see ch. 7, table 7.1)
between 300 - 450°c
below 150°c
above 550°c
between 150 - 300°c
anywhere between 150 and 550°c
between 450 - 550°c

Explanation:

For Question 6: Pressure during metamorphism compacts mineral grains in foliated rocks, increasing their density compared to the parent rock.
For Question 7: Granite requires high-temperature conditions to metamorphose into gneiss, which occurs at temperatures above 550°C.

Answer:

Question 6: more dense
Question 7: Above 550°C