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Rocks - General
Igneous Rocks
Sedimentary Rocks
Metamorphic Rocks
The Rock Cycle
100
The study of rocks.
What is petrology?
100
Igneous rocks are classified into these two categories.
What are intrusive and extrusive?
100
These two things have to happen to begin the process of forming sedimentary rocks.
What are erosion and weathering?
100
These two forces are needed to make metamorphic rocks.
What are heat and pressure?
100
The three types of rocks that make up the rock cycle.
What are igneous, sedimentary, and metamorphic.
200
This type of rocks can either be formed inside the earth's crust or outside the earth's crust.
What are igneous rocks?
200
Course grained igneous rocks are usually formed here.
What is deep in the earth's crust?
200
This type of sedimentary rock is made from eroded fragments such as pebbles, sand grains, and clay particles.
What are clastic sedimentary rocks?
200
These are the original, unaltered rocks before metamorphism occurs.
What are source rocks?
200
Any type of rock can break down to form this because of erosion or weathering.
What are sediments?
300
This type of rock forms from small particles of eroded or weathered rocks.
What are sedimentary rocks?
300
This type of igneous rock is formed from quick cooled lava.
What are volcanic lava igneous rocks?
300
These sedimentary rocks are made from either chemical precipitation or sediments from living things.
What are nonclastic sedimentary rocks?
300
These types of metamorphic rocks have layers in them.
What are foliated metamorphic rocks?
300
Magma or lava form into igneous rocks by undergoing this process.
What is solidifying?
400
This type of rock undergoes both physical and chemical changes due to great amounts of heat and pressure.
What are metamorphic rocks?
400
This rock is NOT a type of volcanic lava igneous rock: aphanite, pumice, scoria, obsidian
What is aphanite?
400
These are the most common compacted organic masses found in organic nonclastic sedimentary rocks.
What are shells?
400
These types of matamorphic rocks do not have layers.
What nonfoliated metamorphic rocks?
400
All three types of rock undergo this process to become magma.
What is melting?
500
This is how a rock feels based on the sizes of the mineral grains that compose the rock.
What is texture?
500
This is the main thing that affects the grain size in igneous rocks.
What is the original magma and surrounding conditions.
500
This type of clastic sedimentary rock has the largest variation in the size of fragments.
What are conglomerates?
500
This type of metamorphic rock forms from limestone.
What is marble?
500
Sediments undergo these two processes to become sedimentary rocks.
What are pressure and compaction?