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20 Cards in this Set

  • Front
  • Back
Lithogenous sediments are
made of material derived from pre-existing rock material
which of the following is the most fine-grained sediment?
abyssal clay
all of the following are examples of sediment transporting media; except:
levitation
in sediments, what does the Wentworth scale describe?
grain size
how is sediment transported from the shore out to the continental rise?
by turbidity currents
microscopic shells that create biogenous sediment on the sea floor are called
tests
beneath the calcite compensation depth (CCD)...
calcium carbonate dissolves in seawater
Calcareous ooze is associated with ________ surface water conditions, and siliceous ooze is associated with ________ surface water conditions.
warm; cool
Deep sea oozes are
all of the above.
Most chalk is made from
coccoliths
The only way for siliceous ooze to be preserved in the ocean is
to have it accumulate faster than it dissolves.
True or False? Because they tend to move downslope, most lithogenous sediments are deposited in abyssal plains.
false
True or False? The calcite compensation depth (CCD) represents the depth where wave action ceases to form calcareous oolites
false
True or False? Black volcanic beach sand is a type of hydrogenous sediment.
false
The similarity found in marine microbe populations near the ocean surface and on the ocean floor, despite the 10 to 50 years it takes for an individual organism to sink to the abyssal depths, can be explained by
being concentrated in fecal pellets.
Where are most modern-day calcareous oozes found in the ocean?
along the mid-ocean ridge beneath warm surface waters
Manganese nodules are NOT
a type of foraminifer.
Which of the following marine organisms lives in cold, polar waters?
diatoms
Which of the following is the most abundant component by weight for deep-ocean sediments?
clay
The Deep Sea Drilling Project (DSDP) confirmed that
all of the above are true