Igneous R.
How are igneous rocks formed
Form when magma cools and crystallizes
How is Metamorphic rock formed?
Heat and Pressure
How are sedimentary rocks classified?
size of sediment
A mixture of minerals, mineraloids, glass or organic matter
Rocks
Lithification
Compaction & Cementation
What are the two groups of igneous Rocks
Intrusive, Extrusive
Classification of Metamorphic rock?
Foliated/Non-Foliated
Lithification is how sedimentary rocks are..
formed
How many types of rocks are there?
3
Foliated
bands or layers
How are igneous rocks classified?
Mineral composition-color
Give one example of a metamorphic rock
marble
What is the most common type of rock found on the earth’s crust
Sedimentary rock
Which rock may have fossils?
Sedimentary Rock
Contact metamorphism
touches hot magma
Give 2 examples of an igneous rock
Granite, Basalt, Obsidian, Pumice, etc
List one benefit of metamorphic rock
building materials, garnets are used as gemstones and abrasives, talc is used in cosmetics, paints, and lubricants, and asbestos is used for insulation and fireproofing etc
3 examples of sedimentary rock
sandstone, limestone, shale, conglomerate etc
Define Rocks
Shows how one rock changes into another
Hydrothermal metamorphism
Hot water
What are the characteristics of intrusive and extrusive igneous rocks?
Intrusive:
below Earth’s surface
cools slowly
coarse (large) grains
at Earth’s surface
cools quickly
fine (small) grains
no bands or layers
non-foliated
The size of sediments are classified into 3 categories, what are the 3 categories?
gravel sized: conglomerate
sand sized: sandstones
fine/clay size: shale
The breakdown of rocks?
Weathering and Erosion
Metamorphism
Heat and Pressure