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30 Cards in this Set

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Sill
Igneous intrusion that is horizontal
Breccia
Rock with sharp, angular fragments
Basalt is the...
Main rock in the oceanic crust
Rock
naturally occuring solid substance that is made of 2 or more minerals
Lacolith
Intrusion with an arched-domelike shape
Igneous
formed from hardening of molten rock
Granite is the...
main rock in continental crust
Metamorphic
Forms from heat and pressure
Limstone, Marbel and Chalk all contain...
calcium carbonate
Phaneritic
crystals are larger then sand
Marble
rocke that is unfoliated and can be used for countertops
Chalk and coal are this type of sedimentery rock
organic
Stock
smaller version of batholith
Glassy (2)
massive and porous
Conglomerate
rock that has round pebbles cemented together by mud and sand
Aphanetic
crystals are smaller than grains of sand
Phorpheritic
2 or more sizes of crystals present
Sedimentery
most fossils found; particles are then compacted and cemented together
parent rock of slate is...
shale
Coal
This rock is made up of plant remains
the 2 types of igneous rocks
intrusive and extrusive
3 types of sedimentary rocks
clastics, organics, chemical
intrusive formed
formed underground
extrusive formed from..
formed from lava
2 types of metamorphic
foliated and un foliated
foliated
crytals are arranged in paralell layers of bands
un-foliated
no bands of crystals and do not break in layers
dikes
intrusion that cuts across rock layers
sills
intrusion that is horizontal
how do igneous rocks with a glassy texture form?
rock cools very quickly--- to quick for crystals to grow