Chapter 2
clast size
Detrital sedimentary rocks are classified by ______.
Each rock is formed from magmas with different silica compositions
Granite, diorite, and gabbro are all intrusive igneous rocks. What makes them different from each other?
chemical; carbonate
Limestone is a _____ sedimentary rock, primarily composed of ________ minerals
lithification
The process by which loose sand from a beach or desert is converted into a solid rock called sandstone is an example of ______.
plutonic rocks have larger crystals
Volcanic rocks are different from plutonic rocks in that ______
igneous
What are the rocks that form from the cooling of magma?
clay
Which type of clast is the smallest?
It cooled quickly on Earth's surface
You observe a dark colored igneous rock with very fine crystals that are only visible under magnification. What can be said about this rock?
igneous, sedimentary, or metamorphic rock
According to the rock cycle, a sedimentary rock can be formed from a(n) ____
when deeply buried
Sedimentary rocks are most likely to lithify ______.