Please enable JavaScript.
Coggle requires JavaScript to display documents.
Rock - Coggle Diagram
Rock
Sedimentary
Type of rock that is formed by massive pressure squeezing small particles.
Small rocks
Sand
Mud
Type of rock that has fossils.
Formed on or near the Earth's surface.
Main process
Erosion
Weathering
Dissolution
Precipitation
Lithification
Example
Limestone
Shale
Chalk
Sandstone
Coal
Clay
Rock salt
Halite
Metamorphic
A kind of rock that will change by the pressure and the heat.
Contact
Rock that changes by the heat.
Usually by the magma underground.
Regional
Rock that changes by the pressure.
When two side of the ground is pushing towards.
It cannot have fossils because the heat and the pressure will destroy the fossils.
Example
Marble
Slate
Phyllite
Schist
Novaculite
Gneiss
Hornfels
Skarn
Soapstone
Igneous
Rock that is formed from magma and lava.
Extrusive
Lava that is erupted.
Cools quickly.
Small or maybe no crystal.
There may be air bubbles inside.
Intrusive
Magma that is inside.
Cools slowly.
There are large crystals.
Exmaples
Basalt: Extrusive
Pumice: Extrusive
Obsidian: Extrusive
Rhyolite: Extrusive
Scoria: Extrusive
Dacite: Extrusive
Granite: Intrusive
Gabbro: Intrusive
Diabase: Intrusive
Diorite: Intrusive
Pegmatite: Intrusive
Peridotite: Intrusive