Sedimentary processes

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Sedimentary Processes

  • occur at surface of lithosphere 
  • a rock already exists broken down by weathering into rock particles and dissolved minerals in solution 
  • these are carried away, separted and may be redeposited elsewhere as rocks with quite different compositions and properties

Alluvial/placer deposits

  • carried by flowing water but deposited when water slows down
  • different minerals deposited in different parts of the river, with densest ones settling out first
  • tin ore, gravel, sand and clay are all…


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