Rocks
By Chris Milton
What is a Rock
the solid mineral material forming part of the surface of the earth and other similar planets, exposed on the surface or underlying the soil or oceans.
Igneous Rocks
- Igneous rocks are formed from the solidification of molten rock material.
- They can be formed inside or outside of the Earth
- Intrusive igneous rocks such as diorite, gabbro, granite that solidify below Earth's surface.
- Extrusive igneous rocks such as basalt, obsidian, pumice, rhyolite and scoria that solidify on or above Earth's surface.
Sedimentary Rocks
- Sedimentary Rocks are types of rock that are formed by the deposition of material at the Earth's surface and within bodies of water
- They are formed in bodies of water or in places with high wind
Metamorphic Rocks
- They are formed when any type of rock goes under heat and pressure
- Formed Deep in the Earth
- Foliated and non-Foliated
- Foliated-foliated metamorphic rocks are formed within the earths interior under extremely high pressures that are unequal.
- Non-foliated-Non foliated metamorphic rock are formed around igneous rock where the temperatures are high but the pressures are low and equal
Rhyolite
- Extrusive, crystals formed quickly
- fine texture, small crystals
- non vesicular
- light color,low density,felsic composition
Conglomerate
- inorganic
- clastic, and pebbles
- Quartz,feldspar,clay minerals
- rounded fragments
Slate
- foliated,mineral alignment
- fine
- mica
- regional
- low-grade metamorphism of shale
Rock cycle
The rock cycle is a cycle that shows how rocks are formed,where they are formed,and their minerals and crystal size and description, there are three main types Sedimentary,Metamorphic, and igneous