Chapter 4 OCE

seafloor sediment from dead marine plants and animals is ______________ sediment

biogenous

seafloor sediment such as siliceous ooze and calcareous ooze is

biogenous

hydrogenous sediments are much less common than ____________ sediments

biogenous and terrigenous

quartz sand is an example of ___________ sediment

terrigenous

rivers carry _________ sediment to the continental shelf

terrigenous

volcanic ash that falls to the ocean floor is an example of __________ sediment

terrigenous

evaporites

a special class of hydrogenous sediment formed from evaporation

there is generally a thicker layer of seafloor sediments on ________________ than _________________

passive continental margin; active continental margin

deep sea drilling

retrieves sediment samples from deep within the ocean floor

terrigenous sediment

Sediment derived from the land and transported to the ocean by wind and flowing water.

neritic sediments

are found primarily on the continental shelf and consist mainly of terrigenous sediments

pelagic sediments

are found primarily on the continental slope and rise and deep ocean basins

larger sand sized sediment carried to the ocean by rivers tends to _____________________

be deposited along the continental shelf

dead plankton that falls to the floor is an example of _______________ sediment

biogenous

fish bones and scales are an example of __________ sediment

biogenous

what is not found in the deep ocean below the CCD because below that level they dissolve in the water

calcareous oozes

which location has the thickest layer of seafloor sediments?

coast of gulf of mexico

hydrogenous sediment

comes directly from water

biogenous sediment

comes from life

which region of the ocean has the largest amount of sea floor sediment?

continental slope and rise

meteor remains are an example of _____________ sediment

cosmogenous

manganese nodules are an example of __________ sediment

hydrogenous

rock salt, salt evaporated from water, is an example of ____________ sediment

hydrogenous

the colorado plateau, which was eroded by the colorado river forming the grand canyon as it uplifted, was formed by seafloor sediments

in a shallow sea

clamshell sampling

samples the seafloor by taking a shallow bite of the ocean floor

cosmogenous sediment

sediment derived from outer space least common type of sediment

seismic surveying

shows layering in the ocean sediments and is often used for oil and gas exploration