Igneous
What is the difference between intrusive and extrusive igneous rocks?
Intrusive rocks cool slower and have larger crystals.
Which sedimentary rock has a clastic texture and is comprised of rounded pebbles, sand and clay?
Conglomerate
What is foliation?
The layering present in metamorphic rocks.
What does the rock cycle show?
The life cycle of rocks on Earth
What in NYS official gem?
Garnet
According to your reference table, what is a fine grained igneous rock made up primarily of pyroxene and plagioclase feldspar?
Basalt or Diabase
Which property is used to classify the land-derived (clastic) sedimentary rocks?
Grain size
Metamorphic rocks result from what?
Heat & pressure
Sedimentary rocks form from what processes?
Compaction and cementation
Why do diamond and graphite have different physical properties even though they are both composed entirely of the element carbon?
They have different arrangements of Carbon atoms.
What Igneous rock has a vesicular texture and contains the minerals potassium feldspar and quartz?
Pumice or Vesicular Rhyolite
What is an evaporite and how do they form?
The are rocks hat form from the evaporation of liquids leaving behind a solid like rock salt.
What metamorphic rock will react to acid?
Marble
What can igneous rocks form?
Sediments, metamorphic rocks, & magma
Bituminous Coal is classified as which type of rock?
Bioclastic or organically formed sedimentary rock.
Why are all vesicular rocks classified as extrusive?
Because they have gas pockets that could not form under ground due to pressure.
What is the difference between banding and layering?
Layering is a sedimentary characteristic, banding is the alignment of like minerals due to heat and pressure.
Wavy bands of light and dark minerals visible in gneiss probably formed from what?
Foliation
What can metamorphic rocks form?
Magma, other metamorphic rocks, & sediments
What do igneous, sedimentary, and metamorphic rocks have in common?
They are all made of minerals
What is the other name for intrusive and extrusive rocks?
Plutonic & Volcanic
Why do most sedimentary rocks from in or near water?
because of erosion and deposition.
If you metamorphose sandstone, what will happen to the rock?
It will become denser and the minerals in the rock will recrystallize.
What is the difference between regional and contact metamorphism?
Regional is large scale mountain building events and contact is associated with contact with magma or lava.
Identify four of the five criteria of a mineral
Naturally occurring
Inorganic
Solid
Definite chemical composition
Crystalline structure