Which of the following high silica igneous rocks can be of low enough density to float on water?
A) obsidian
B) granite
C) rhyolite
D) pumice
Correct Answer:
Verified
Q47: The aphanitic equivalent of granite is
A) komatiite
B)
Q48: Explosive volcanic eruptions occur_ .
A) when crystallization
Q49: What is the rock colour (total %
Q50: The mechanism of selectively removing the minerals
Q51: What is the most common extrusive rock
Q53: Light coloured aphanitic rocks_ .
A) consist predominantly
Q54: What are vesicles?
A) open voids in an
Q55: The most common non- ferromagnesian silicate minerals
Q56: Which phaneritic, igneous rock is comprised mainly
Q57: What two rock types are often found
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