Rocks
By Emma Zoldak
Rocks
A solid mineral material forming part of the earth surface and other similar plants.
Igneouse
Igneous rock is formed through the cooling and solidification of magma or lava. They are formed either inside or out side of a volcano. The main types of igneous rocks are Intrusive and Extrusive. An Intrusive rock is formed in the volcano. An Extrusive rock is formed out side of a volcano.
sedimentary
Sedimentary rocks are types of rock that are formed by the deposition of material at the Earth's surface and within bodies of water. The three types of sediment rocks are Clastic, Chemically and Organically formed.Clastic sedimentary rocks from by weathering processes. Chemically fromed rocks are fromed by precipitation of minerals from water. Organic sedimentary rocks form from the accumulation and lithification of organic debris
metamorphic
Metamorphic rocks are rocks that have "morphed" into another kind of rock. They are formed by pressure deep in the earth. The main types are foilated and non-foilated. Foilated rockes are deep in the earth under extremely high pressure. Nonfoliated metamorphic rocks areformed around igneous intrusions where the temperatures are high but the pressures are relatively low and equal in all directions.
Granite
- form slowly
- Big crystals
- color varies
- non vascular
- 35 percent feldspar, 9 percent biotite mica, 27 percent quartz, 21 percent microcline feldspar, and 6 percent muscovite mica and various accessory minerals.
Breccia
- organic
- 2 millimeter grain size
- Composed of mixed rock fragments
Phyllite
- foilated
- fine grain
- composed of quartz, sericite mica, and chlorite
rock cycle
The rock cycle is a group of changes. Igneous rock can change into sedimentary rock or into metamorphic rock. Sedimentary rock can change into metamorphic rock or into igneous rock. Metamorphic rock can change into igneous or sedimentary rock.