Geology

Geology

Crust
1. Oceanic crust
  1. Ocean-Ocean divergent
    1. Land separate and lava spew out
      1. New ocean crust is formed
      2. Known as mid ocean ridges
        Mid atlantic range
  2. Ocean-Continental convergent
    1. Subduction zone, creates a trench
      1. Also creates Volcanoes
  3. Ocean-Ocean convergent
    1. Subduction happens over here
      1. The upper crust has volcanoes form onto it, creating a volcanic arc
2. Continental Crust
  1. Continent-Continent convergent
    1. Can create mountain such as himalayas
  2. Continent Continent Transform, Strike slip
    1. Produces the largest Earthquakes
    2. San Andreas; Haiti
jasons notes
1. Convergent boundaries
  1. Usually where all the big and frequent earthquakes happen
  2. Subduction generally takes place over here
2. Divergent boundaries
EARTHQUAKES
1. Body
  1. P waves
    1. Primary waves, fastest to reach
    2. Are recorded in vibration
    3. Harder to read the the power of the earthquake
    4. Parallel to the direction of travel
  2. S waves
    1. Shaped like S
    2. Second waves to reach
    3. (S wave time - P wave time) * velocity = distance of earthquake
    4. perpendicular
2. Surface
  1. Rayleigh
  2. Love
3. Conditions for earthquakes
  1. Cold, brittle rocks
  2. warm, strong rocks
Rocks deformation
1. Elastic deformation
  1. Rocks are stretched and respond by elastic rebound and store energy
  2. Can result in Brittle failure
    1. Happens when the rocks break and cant return to how they were before
Liquification
1. When pressure squeezes out the water out of lose particles
  1. Generally bad

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	Criado por Hamdan Jawad quase 7 anos atrás