Chapter 4 Marine Sediments

Organisms that live on the ocean floor may be responsible for keeping manganese nodules from being buried in the sediment.

True

Tektites are glassy rock fragments created during impact events.

True

Texture refers to the size and shape of sediment particles.

True

The organisms that contribute to biogenous sediment are chiefly algae and protozoans

True

Sediments produced by plants and animals in the sea are called:

biogenous

Coccolithophores is a type of....

biogenous sediment

Which one doesn't belong? a)biogenous b) calcareous c) cosmogenous d) hydrogenous e) lithogenous

calcareous

Sediments with an extraterrestrial origin are called:

cosmogenous

Tektites

cosmogenous sediment

A glacial deposit is well sorted.

false

A very important way to increase the settling rate of fine particles in the open is via:

fical palettes

In general, polar neritic sediment tends to have more:

glacial deposits

Oolites are an example of which of the following sediment types?

hydrogenous sediment

manganese nodules is a type of...

hydrogenous sediment

The type of marine sediment that forms the thickest deposits worldwide is:

lithogenous

Abyssal clay is a type of __________. (a) biogenous sediment (b) cosmogenous sediment (c) hydrogenous sediment (d) lithogenous sediment

lithogenous (terrigenous) sediment

The four main classifications of marine sediment include:

lithogenous, bigonous, cosmogenous, hydrogenous

Sediments found on continental margins are called:

neritic

Ocean sediments provide what mineral resources?

oil and natural gas

Give examples of lithogenous sediments.

sand, gravel, clay, mud

Which one doesn't belong? a) glaciers b) rivers c) siliceous ooze d) turbidity currents e) volcanic ash

siliceous ooze

Which one doesn't belong? a) halite and other salts b) maganese nodules c) metal sulfides d) phosphates e) tektites

tektites