Rock cycle

• Rock


  A collection of minerals that covers large areas of the Earth
• Rock


  • Can be classified in different ways such as texture, origin, mineral composition and color
• Petrology


  The study of rocks to determine their formation, composition and structure
• Classification of rocks


  • Igneous rock/fire rock
  • Sedimentary rock
  • Metamorphic rock
• Igneous rock


  • Most common type
  • Form by the molten rock (magma)
• Types of igneous rock

  • Intrusive rock/plutonic rock
  • Extrusive rock
• Intrusive igneous rock


  • Cools down slowly
  • Formed large rock
  • Intruded into existing rock
• Extrusive igneous rock


  • Extruded on oceanic continental crust
  • Cools down quickly
  • Formed small rocks
• Sedimentary rock


  • Formed by pre-existing rock pieces or living organisms
  • Sediments are rocks carried away by wind or water
• Types of sedimentary rocks

  • Clastic sedimentary rock
  • Chemical sedimentary rock
  • Organic sedimentary rock
• Sedimentary formation

  1. Weathering

  2. Erosion

  3. Deposition

  4. Compaction

  5. Cementation
• Metamorphic rock


  • Can be formed by sedimentary and igneous rock
  • Formed by heat and pressure
• Types of sedimentary rocks. 1.Clastis S.R

  - Formed by pre existing rock

  
  

  2.Chemical S. R

  - Formed by precipitation / evaporation of rocks

  
  

  3.Organic sedimentary rock

  - formed by living organism like plants and animals
• Sedimentary formation: 1.Weathering The breaaking down of rocks 2.Erosion The process by which the rocks are carried in river 3.Depostion drop the sediments and carried by the river 4.Compaction Squeez together 5.Cementation Glued together
• Metamorphism Changing rocks sedimentary igneous and metamorphic rock Metamorphism 2 types Contact metamorphism When the magma is in contact with rock Temperature Regional Metamorphism Wide area Has a present of high temperature and pressure Ex: mountain buildings