General Rock Info
Name the 3 types of Rocks
Igneous, Sedimentary, Metamorphic
Why do intrusive igneous rocks have large crystals?
Intrusive igneous rocks are slow cooling which allows time for crystals to grow before solidification.
In order, name the 5 sedimentary rock formation steps
Weathering, Erosion, Deposition, Compaction, Cementation
Name 2 of the 3 agents of metamorphism.
heat, pressure, chemically active fluids
cooling
What is the name of a naturally occurring solid made of minerals and / or organic matter?
Rock
Name the three intrusive, igneous rocks we have studied in this class.
granite, diorite, gabbro
What type of sedimentary rock is formed from fragments of other rocks
Clastic
How are minerals in foliated metamorphic rock arranged?
Minerals in foliated metamorphic rock are aligned in layers
What process must occur to transform igneous rock into metamorphic rock?
heat and pressure
What is the name of a naturally occurring, inorganic solid with a definite chemical composition and an ordered internal structure?
Mineral
Why do extrusive igneous rocks have small crystals. (Cannot be seen without magnification)
Extrusive igneous rocks cool quickly which prevents crystals from growing large before solidification.
What is the difference between conglomerate and breccia?
conglomerate = rounded pebbles cemented together
breccia = angular pebbles cemented together
Name the three foliated rocks we have studied in this class. Hint: They are all from shale.
slate, schist, gneiss
What process occurs to transform metamorphic rock into sediment?
weathering and erosion
Minerals can be categorized into two groups, felsic and mafic. What is "felsic" short for?
Feldspar and Silica
Name the extrusive igneous rock that is glass like and often black.
Obsidian
This type of sedimentary rock is formed from precipitated minerals from solution
Chemical
Metamorphic rocks with interlocking minerals, but that have no visible layering are called _________.
What process occurs to transform sediment into sedimentary rock?
compacting and cementation
Minerals can be categorized into two groups, felsic and mafic. What is "mafic" short for?
Magnesium and Ferric (iron)
Name the two types of rock created from volcanic ash.
Soft Tuff and Welded Tuff
This type of sedimentary rock is formed from the remains of living organisms.
Organic sedimentary rocks
What are the two non-foliated, metamorphic rocks that we studied in this class?
marble, serpentinite
magma / lava, igneous rocks, sediment, sedimentary rock, metamorphic rock