Oceanography Ch. 4
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
