Rock formation
How does an igneous rock form?
cooling of magma or lava
What kind of rock is granite. (texture and rock type)
Coarse-grained igneous rock
What kind of rock is pumice. (texture and rock type)
vesicular igneous rock
What does coarse-grained mean?
Large visible crystals
What kind of rock would you expect to find in Hawaii?
Igneous
How does a clastic sedimentary rock form?
weathering and erosion of sediments, compact and cement sediment.
What kind of rock is sandstone. (texture and rock type)
clastic sedimentary rock
What kind of rock is basalt. (texture and rock type)
fine grained igneous
What does fine-grained mean?
No visible crystals
What term means an igneous rock is light in color?
felsic
How does a chemical sedimentary rock form?
Evaporation of water leaving minerals behind.
What kind of rock is gneiss. (texture and rock type)
foliated metamorphic rock
What kind of rock is slate. (texture and rock type)
foliated metamorphic rock
What does foliated mean?
Mineral grains line up.
What texture does obsidian have?
glassy
How does a foliated metamorphic rock form?
Heat and pressure
What kind of rock is shale. (texture and rock type)
clastic sedimentary rock
What kind of rock is limestone with no fossils. (texture and rock type)
chemical sedimentary rock
What does clastic mean?
formed from sediment
What type of rock would you expect to find in the coastal plain of Virginia?
Clastic sedimentary (sandstone)
How does an organic sedimentary rock form?
from once living organisms
What kind of rock is scoria. (texture and rock type)
vesicular igneous rock
What kind of rock is marble. (texture and rock type)
non-foliated metamorphic
What does vesicular mean?
Has holes
What kind of rock would you expect to form when mountains collide? texture and main rock name
foliated metamorphic rocks