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WorksheetsIgneous geology
Total questions: 20
Worksheet time: 12mins
Add the minerals to complete Bowen's reaction series.
amphibole
pyroxene
Na-rich plagioclase
Ca-rich plagioclase
biotite
olivine
quartz
Match the following minerals to their mineral group:
pyroxene
augite
amphibole
hornblende
mica
muscovite
Which of these terms describes the point labelled 4 on this phase diagram?
eutectic
bitectic
euhedral
binary
Minerals that crystallize at higher temperatures tend to be low in
Iron
Calcium
Silicon
Magnesium
Minerals that crystallize at lower temperatures tend to be low in
Iron
Potassium
Silicon
Oxygen
Which of the following would crystallize first as magma cools.
Pyroxene
Quartz
Amphibole
Sodium Plagioclase
Mafic rocks are composed of mostly
silicon and calcium
sodium and magnesium
potassium and aluminum
iron and magnesium
The lighter in color the igneous rock, the higher the amount of
iron
silica
calcium
sodium
Magmas that form at high temperatures and pressures tend to be
high in viscosity and low in silica
low in viscosity and high in silica
high in viscosity and high in silica
low in viscosity and low in silica
Magmas that form at lower temperatures and pressures tend to be
High in silica and high in viscosity
Low in silica and low in viscosity
High in silica and low in viscosity
Low in silica and high in viscosity
Bowen found that the following minerals crystallized in a discontinuous pattern
Sodium, calcium, and potassium plagioclase
quartz, potassium feldspar, olivine, and muscovite
biotite, calcium plagioclase, and pyroxene
olivine, pyroxene, amphibole, and biotite
Porphrytic igneous rocks are the result of
rapid cooling and crystallization of magma
slow cooling and crystallization of a magma
differential cooling and crystallization magma
gradual cooling and crystallization of magma
Which rock would be the most stable at the surface?
granite
diorite
basalt
gabbro
Which of these igneous rocks would have the highest specific gravity
Granite
Syenite
Andesite
Gabbro
This occurs when two different magma rises, with the more buoyant mass overtakes the more slowly rising body.
Assimilation of magma
Crystal Fractionation
Magma mixing
Partial melting
It describes the process of creating one or more secondary secondary magmas from single parent magma.
Magmatic differentiation
Magmatic stress
Magmatic decompression
Magmatic assimilation
It describes the process of magma formation where melting results from the addition of volatiles, compounds that have low boiling point.
Decomposition melting
Flux melting
Heat transfer melting
Magmatic melting
Which of the following is NOT a primordial source of heat of the Earth?
Accretion energy
Adiabatic compression
Core Formation energy
Radioactive decay
The intrusion is older than layer C.
true
false
Arrange in order from OLDEST (1) to YOUNGEST (5).
C
1
B
2
A
3
D
4
E
5
