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