CH26.2 Flashcards
Rock define?
A rock is a naturally formed mixture containing minerals, rock fragments, and volcanic glass
How are rocks identified?
By minerals they contain and by the texture.
What does the texture of a rock describe about a rock?
The size and shape and arrangement of their components.
What type of molten rock does intrusive igneous rocks form from?
It forms from within earths crust.
Where do intrusive igneous rocks form from?
They form from molten rock material that cools and crystallizes either underground or on Earths surface.
What is the name of the series that illustrates simultaneous crystallization of silicate minerals?
What are the 3 types of magma?
The different types of magma are basaltic, andesitic, and rhyolitic,
Which magma type has low silica content?
Mafic Magmas.
Which magma type has high silica content?
Felsic Magmas.
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 locations in continental crust or oceanic crust
Which type of igneous rock has a course grained texture?
Intrusive igneous rocks
Which type of igneous has fine grained texture?
Extrusive igneous rocks
Do fine grained rocks cool slowly or quickly?
They have a rapid cooling
What are two specific texture types for extrusive igneous rock?
fine-grained or aphanitic texture
