Multiple Choice
A geologist looks at a piece of rock from Yosemite National Park under a microscope and sees tiny crystals of olivine, pyroxene, and plagioclase feldspar. What process might have formed this rock?
A) melting underground, violent volcanic eruption, and solidification above ground
B) melting underground, flowing to Earth's surface, and solidification above ground
C) solidification underground, violent volcanic eruption of ash and solid rock
D) both melting and crystallization underground
Correct Answer:
Verified
Correct Answer:
Verified
Q55: Why are rocks rich in magnesium and
Q56: What did Tuttle and Bowen observe in
Q57: Why are rocks rich in feldspar and
Q58: All igneous rocks exhibit identical grain size.
Q59: What process forms rocks with porphyritic texture?<br>A)
Q61: What is an example of pyroclastic materials?<br>A)
Q62: Why are igneous rocks that consist of
Q63: Volcanoes are present at convergent plate boundaries
Q64: Figure 4.22 <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB5867/.jpg" alt="Figure 4.22
Q65: A scientist at a canyon notices observes