OCE 1001 Chapter 4 Pearsons
The most likely place to find abundant manganese nodules
Abyssal plains
The White Cliffs of Dover and Fossiliferous limestone are an example of
Biogenous Sediment
depth at which all calcium carbonate is in solution (i.e. dissolved)
CCD (calcium compensation depth)
biogenous sediment
Derived from remains of once living organisms
hydrogenous sediment
Dissolved materials on the water
What marine resources is used to make wallboard or sheet rock?
Evaporative salts
cosmogenous sediment
From extraterrestrial sources
coatings of metal sulfides near black smokers and Maganese nodules are
Hydrogenous
associated with glacial deposits
Ice rafting
Abyssal Clay is red because
It contains oxidized iron
Sandstone and Turbidite deposits are an example of
Lithogenous Sediment
depth at which calcium carbonate begins to dissolve
Lysocline
Most common gas hydrate under the ocean floor
Methane
lithogenous (terrigenous) sediment
Preexisting rock material that originates from land from erosion
What do marine sediments reveal about history
They record the timing and severity of some global extinction events.
associated with submarine canyons and deep-sea alluvial fans
Turbidite
particle size classification
Wentworth scale
Coccolithophores
biogenous sediment
Diatomaceous ooze
biogenous sediment
Siliceous ooze
biogenous sediment
Stromatolites
biogenous sediment
Calcite dissolves more readily in seawater that is ________ in temperature and ________ in pressure.
colder; higher
Tektites
cosmogenous sediment
The deposition of coarse-grained lithogenous material in neritic environments along continental margins is an example of the ________ of biogenous sediment.
dilution
A very important way to increase the settling rate of fine particles in the open ocean is via
fecal pellets.
The main energy resources associated with marine sediments are petroleum and _____
gas hydrates
In general, polar neritic sediment tends to have more ________
gravel than in tropical waters
Halite (salt)
hydrogenous sediment
Manganese nodules
hydrogenous sediment
Metal sulfides
hydrogenous sediment
Oolites
hydrogenous sediment
Abyssal clay
lithogenous (terrigenous) sediment
Calcium carbonate is most likely to dissolve in water with
low salinity
The most abundant mineral in lithogenous sediments
quartz
Neritic sediments are most likely to be composed of __________
sand, silt, and gravel
An increase in atmospheric carbon dioxide due to the burning of coal will cause the calcite compensation depth to rise
the oceans will get more acidic
Marine sediments provide insight on today's climate changes
they reveal a detailed history of Earth's past climate
