Oceanography Chapter 4 Study Guide

Sediments found on continental margins are called

Neritic

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

Neritic, lithogenous sediments deposits

What percentage of the rocks exposed on the continents originated as sedimentary rocks deposited in ancient ocean environment

more than fifty percent

Which of the following contains Silica (SiO2)

radiolarians

The term referring to the size and shape of sediments particles is

texture

High-Energy environment are most likely to deposit which one of the following

Large particles such as gavel

Calcite dissolves more readily in seawater that is ________ in temperature and ________ in pressure.

Colder; higher

Sediments with an extraterrestrial origin are called

Cosmogenous

The deposition of coarse-grained lithogenous material in neritic environments along continental margins is an example of the ______ of biogenous sediments

Dilution

The study of how the ocean, atmosphere, and land have interacted in the past to produce changes in ocean chemistry, circulation, biology, and climate is called

Paleoceaonography

The number of organisms present in the surface water above the ocean floor is called

Productivity

Which of the following is a biogenous sediment

diatom ooze

Calcium carbonate is most likely to dissolve in water with which characteristic

Lots of carbon dioxide and colder temperatures

Which of the following contains calcium in the sea are called

Biogenous

The dissolution of the thick test of foraminifers below the CCD is an Example of the_____ of biogenous

Destruction

Which of the following contains carbonate (CaCO3)

Foraminiferans

Sediments produced because of chemical reactions in seawater are called:

Hydrogenous

Pelagic clays contain lots of material that settles to the seafloor through the water column and are:

Less than 30% biogenous material

Turbidite deposits are an example of which of the following sediment types?

Lithogenous Sediment

Sediments that begins as rocks on continents or islands is called

Lithogeous (Terrigenous) sediment

Ocean sediments consist of particles that have slowly settled out of the water by which of the following the processes?

Suspension settling