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13 Cards in this Set
- Front
- Back
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Seive
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What is used top detemine sizes of sediment
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What terms are used to classify sediments size?
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Broad - gravel,sand, and mud
narrow - boulder to crystal |
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abyssal clay
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lithogenous deposits in pelagic sediment; accumilates very slowly
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red clay
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fine rock powder rich in iron that oxidizes in water and turns reddish-brown
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lysocline
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the depth at which calcareous skeletal material first starts to dissovle
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Average depth of CCD
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4500 meters
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carbonates
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limestone-type deposits
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phosphorites
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phophorus in phosphate form in crusts and nodules
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magnese nodules
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deposits of magnese, iron, copper, and cobalt, nickel in black and brown round masses scattered on the ocean floor
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dregdes
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nets or wire baskets that get drug across the ocean floor
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grab samplers
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weighted hinged devices that snap shut when they reach the ocean floor
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corer
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hollow pipe w/ a cutting end that is forced into sea floor by its own weight
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largest sea floor mining operation
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construction for sand and gravel
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