classification of igneous rocks

Question 1

mafic rocks have a silica content of

Answer 1

45-52%

Question 2

ultramafic rocks have a silica content of

Answer 2

45% or lower

Question 3

what is the deepest part of the igneous rock system

Answer 3

plutonic

Question 4

why is it called plutonic

Answer 4

because the god of the underworld pluto

Question 5

the first layer of igneous rocks are called

Answer 5

volcanic

Question 6

the volcanic region of igneous rocks is. where ??

Answer 6

on the surface

Question 7

hypabyssal rocks are. where ??

Answer 7

the middle of volcanic and plutonic

Question 8

how many ways are there of classifying igneous rocks

Answer 8

3

Question 9

the 3 ways of classifying igneous rocks are

Answer 9

mineral composition, grain size, silica content

Question 10

ultramafic rocks contain

Answer 10

olivine, pyroxene

Question 11

mafic rocks contain

Answer 11

plagioclase feldspar and pyroxene

Question 12

intermediate rocks contain

Answer 12

potash feldspar, plagioclase feldspar, quartz, hornblende, biotite mica.

Question 13

silicic rocks contain

Answer 13

quartz, potash feldspar, plagioclase feldspar, biotite and muscovite mica.