MMS3443 Topic 5

What is marine sediment primarily composed of?

• Inorganic particles

• Only biogenic materials

• Organic particles

• Both organic and inorganic particles

Which of the following is NOT a method of marine sediment sampling?

• Drilling

• Magnetic sampling

• Grab sampling

• Core sampling

What type of sediment is derived from the erosion of land?

• Hydrogenous

• Terrigenous

• Cosmogenous

• Biogenous

What is the primary source of biogenous sediments?

• Weathering of rocks

• Accumulation of plant and animal hard parts

• Volcanic eruptions

• Atmospheric dust

Which type of sediment is formed from the precipitation of minerals from seawater?

• Cosmogenous

• Hydrogenous

• Terrigenous

• Biogenous

What is the term for sediments that originate at the place of deposition?

• Biogenous

• Terrigenous

• Autochthonous

• Allochthonous

Which of the following is a characteristic of pelagic deposits?

• Consist primarily of terrigenous material

• Found on continental shelves

• Located near river mouths

• Dominated by biogenous material

What is the primary component of calcareous ooze?

• Silica

• Calcium carbonate

• Iron

• Manganese

Which sediment type is most abundant in the deep ocean?

• Terrigenous

• Cosmogenous

• Biogenous

• Hydrogenous

What is the main factor that influences the distribution of marine sediments?

• Water temperature

• Salinity

• Depth of water

• Proximity to land