oceanography exam 3

​Define sediment: sediment is tiny minerals collected on the bottom of the seafloor

​Organic or Inorganic Materals

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​four different tyoes

​Identify the different types of sediment...

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• ​travels from LAND

  • weathering of rocks

  • river runoff

  • dust in the wind​

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​Lithogenous

terrigenous ​

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​ located everywhere on the seafloor

​between CONTINENTAL MARGINS

• sediment is thick

​LONG LASTING

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​Located/FOUND

​causes LITHIFICATION

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​sediment begins to pile on top of each other UNDER PRESSURE forming a sediment rock

• standstone/cliffs

• CLAY

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the small particals of living organisms remains

• skeletal/shells

​oozes: small microscopic particles

• biogenous ooze

• siliceous ooze

• calcareous ooze​

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​Biogenous

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​mainly the thin top layer of the seafloor (1 cm approx)

• ​burrowing species stir upper layer of sediment

DISSOLVES QUICKLEY

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​BIOTURBATION

biogenous ooze

• mostly found

siliceous ooze

• silicate shells (diatoms/radiolarian)

​calcareous ooze

• made from calcium carbonate shell​

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​oozes?

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​HYDROGENOUS

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