Multiple Choice
The quartz in granite begins to melt at 650°C, so if we find a migmatite where quartz has melted in a granitic rock and we know the temperature in the region increased with depth by about 25°C per kilometer, we could estimate the depth that the rock had been at to be about ________.
A) 23.5 km
B) 12.5 km
C) 18.0 km
D) 26.0 km
Correct Answer:

Verified
Correct Answer:
Verified
Q52: Coquina is derived from_ .<br>A) sand<br>B) shell
Q53: Examine the words and/or phrases below and
Q54: Examine the words and/or phrases below and
Q55: The primary agent of contact metamorphism is_
Q56: Evaporites have a_ origin.<br>A) bioclastic<br>B) biochemical<br>C) detrital<br>D)
Q58: Chalk forms from _.<br>A) magnesium rich fluids
Q59: Basalt is the _equivalent of gabbro.<br>A) felsic<br>B)
Q60: Examine the words and/or phrases below and
Q61: Compaction would probably be most significant as
Q62: Death Valley is a site where_ sedimentary