Rocks

Descripción

Mapa Mental sobre Rocks, creado por Rachel Thornton el 06/10/2015.
Rachel Thornton
Mapa Mental por Rachel Thornton, actualizado hace más de 1 año
Rachel Thornton
Creado por Rachel Thornton hace casi 9 años
10
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Resumen del Recurso

Rocks
  1. Igenous-from molten rocks
    1. Plutonic rocks- from magma at depth (more crystallized)
      1. Volcanic rock- from lava at surface (fine-grained,
        1. Volcanic Glass- fast cooling at surface prevents crystals
    2. Sedimentary- from by deposition of Earth's sediment; formed from mechanical break up of another rock
      1. Lithification- compacts sediments together
      2. Metamorphic- from heat/pressure
        1. Contact Metamorphism- heat from magma chambers changes the adjacent rock
          1. Regional Metamorphism- heat/pressure can affect rocks over big area
        2. Law of Superposition: theory that strata at bottom are oldest
          1. Classifying Rocks:
            1. Grain size
              1. Coarse= gravel
                1. Medium= sand
                  1. Fine=silt
                    1. Very Fine= mud
              2. Grain shapes
                1. Angular
                  1. Sub-Angular
                    1. Sub-rounded
                      1. Rounded
                2. Better sorted and rounded rocks traveled further from the surface
                3. Rock Cycle:
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