Show:
Sedimentary
Metamorphic
Igneous
Miscellaneous
Fun Facts
100
How are Sedimentary rocks formed?
Weathering and Erosion & Compaction and Cementation
100
How are Metamorphic rocks formed?
From existing rocks by heat and pressure.
100
How are igneous rocks formed?
Melting and cooling
100
Sandstone is formed from____
sands.
200
What are two origin of Sedimentary rocks?
Chemical and Organic
200
What two types of metamorphism are there?
Regional and Contact.
200
What are two factors that affect the texture of igneous rocks
Crystal size and amount of gas dissolved in the magma
200
Silts and clay form___.
Shale
300
The combination of __________ forms new minerals.
dissolved ions
300
What is metamorphosed limestone?
Marble
300
What is aphanitic?
Rapid cooling which equals small crystals
300
What sediments come from plant and animal remains?
Limestone and Coal
400
What fragments are in Sedimentary rocks?
Plant and animal
400
What is Regional Metamorphism?
Large areas of rocks are under intense pressure and temperature
400
What does dissolved gas help?
It helps to move ions around in magma and high amounts helps crystals grow faster
400
What is phaneritic?
Slow cooling which equals large crystals
500
What can be identified by HCI?
Calcite
500
What happens when shale is put under regional metamorphism?
The rocks gets a foliated texture
500
Whats the difference between plutonic and volcanic?
Plutonic is phaneritic and volcanic is aphanitic
500
What is porphyry?
large crystals surrounded by fine-grained mass of rock