Oceanography Ch. 4

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Sediments found on continental margins are called ________.

Neritic

Ooids are

Hydrogenous Sediment

High-energy environments are most likely to deposit which one of the following?

Large particles such as gravel

Abyssal Clay is a

Lithogenous Sediment

Tektites are

Lithogenous Sediment

Turbidite deposits are an example of which of the following sediment types?

Lithogenous Sediment

2

Cosmogenous Sediment

Which of the following natural gasses is most common in gas hydrates from under the ocean floor?

Methane

Halite is a

Hydrogenous Sediment

Diatomaceous Ooze is a

.Biogenous Sediment

Sediments produced by plants and animals in the sea are called ________.

Biogenous

Coccolithophores are

Biogenous Sediment

Foraminifers are

Biogenous Sediment

Stromatolites are

Biogenous Sediment

Which of the following is thought to have enriched ocean floor sediments with rare-earth elements?

Deep ocean currents

The dissolution of the thick tests of foraminifers below the CCD is an example of the ________ of biogenous sediment.

Destruction

Which of the following contains calcium carbonate (CaCO3)?

Foraminiferans

Manganese Nodules are

Hydrogenous Sediment

The number of organisms present in the surface water above the ocean floor is called ________.

Productivity

Which of the following has tests that contain silica (SiO2)?

Radiolarians

Sediments that are poorly sorted were most likely deposited by ________.

a glacier

Calcite dissolves more readily in seawater that is ________ in temperature and ________ in pressure.

colder; higher


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