Oceanography - Marine Sediments

Radiolarian oozes typically form near the equator. A: True B: False

A: True

Cosmogenous sediment consists of two main types of sediment: A: microscopic spherules and macroscopic meteor debris. B: biogenous oozes and evaporites. C: microscopic spherules and abyssal clays. D: abyssal clays and evaporites. E: biogenous oozes and macroscopic meteor debris.

A: microscopic spherules and macroscopic meteor debris.

A glacial deposit is well sorted. A: True B: False

B: False

The most likely place to find abundant manganese nodules is on the: A: crest of a mid-ocean ridge. B: abyssal plain far from a continent. C: continental shelf. D: continental rise. E: All of the above locations contain manganese nodules.

B: abyssal plain far from a continent

High-energy environments are most likely to deposit which one of the following? A: manganese nodules B: large particles such as gravel C: cosmogenous sediments D: clay-sized particles E: silt-sized particles

B: large particles such as gravel

Sediments with an extraterrestrial origin are called: A: lithogenous. B: hydrogenous. C: biogenous. D: cosmogenous. E: volcanogenic.

D: cosmogenous.

Which of the following contains silica (SiO2)? A: foraminiferans B: corals C: coccolithophores D: radiolarians E: phosphorites

D: radiolarians

Tektites are glassy rock fragments created during impact events. A: True B: False

A:True

Sediments derived from pre-existing rocks on land are called: A: volcanogenic. B: lithogenous. C: biogenous. D: cosmogenous. E: hydrogenous.

B: lithogenous.

Sediments found on continental margins are called: A: pelagic. B: neritic. C: continental. D: estuarine. E: oceanic.

B: neritic.

The four main types of marine sediment include all the following except : A: hydrogenous sediment. B: zoogenous sediment. C: cosmogenous sediment. D: lithogenous (terrigenous) sediment. E: biogenous sediment.

B: zoogenous sediment.

Sediments produced by plants and animals in the sea are called: A: volcanogenic. B: terrigenous. C: biogenous. D: cosmogenous. E: hydrogenous.

C: biogenous.

Which of the following contains calcium carbonate (CaCO3)? A: radiolarians B: phosphorites C: foraminiferans D: glauconite E: diatoms

C: foraminiferans

Sediments produced because of chemical reactions in seawater are called: A: volcanogenic. B: biogenous. C: hydrogenous. D: lithogenous. E: cosmogenous.

C: hydrogenous.

Calcium carbonate is most likely to dissolve in water with which characteristic? A: low carbon dioxide concentration B: high oxygen concentration C: low salinity D: low oxygen concentration E: high carbon dioxide concentration

C: low salinity

All the following are examples of lithogenous sediment except : A: clays. B: beach sand. C: volcanic particles. D: glacial deposits. E: diatom ooze.

E: diatom ooze.