Rocks and minerals Flashcards
How are rocks identified?
By their composition and texture
What does the texture of a rock describe about a rock?
The size, shape, and arrangements of the rock’s components?
Where do intrusive igneous rocks form?
They form inside of the earth’s 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 3 types of magma?
Mafic, intermediate, and Felsic
Which magma type 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
Which type of crust has little to no quartz? (oceanic or continental?)
Oceanic and deep continental
Which type of igneous rock has a coarse grained texture?
Intrusive
Which type of igneous rock has a fine grained texture?
Extrusive
Do fine grained rocks cool slowly or quickly?
quickly
What are the two specific texture types of extrusive igneous rock?
Vesicular or Porphyritic
Which texture is the type with holes left behind because of rapid cooling?
Vesicular
