chapter 26.2 Flashcards
Define rock
A naturally formed mixture containing minerals, rock fragments, volcanic glass.
How are rocks identified?
By composition and texture.
What does the texture of a rock describe about a rock?
Describes the size, shape, and arrangement of the rocks components.
Where do intrusive igneous rocks form?
Within the earths crust.
What type of molten rock does intrusive igneous rocks form from?
Magma.
What is the name of the series that illustrates simultaneous crystallization of silicate minerals?
Bowen’s reaction series.
What are the three types of magma?
Mafic, intermediate, and felsic.
Which type of magma has a low silica content?
Mafic.
Which magma type has a high silica content?
Felsic.
Which type of crust has an abundant amount of quartz?(oceanic or continental)
Continental crust.
Which type of crust has little to no quartz?(oceanic or continental)
Deep continental, Oceanic crust.
Which type of igneous rock has a coarse grained texture?
Intrusive igneous rock.
Which type of igneous rock has a fine grained texture?
Extrusive igneous rock.
Do fine grained rocks cool slowly or quickly?
Quickly.
What are the two specific texture types for extrusive igneous rock?(this answer was our weekly question for Tuesday)
Vesicular and porphorytic.
