a fine-grained, deep ocean sediment containing the skeletal remains of calcite-secreting microbes. What is the calcite compensation depth, or CCD?
the ocean depth below which calcite is unstable and will dissolve quickly
.
What is the calcite compensation depth or CCD group of answer choices?
What is the Calcite Compensation Depth (CCD)? The Calcite Compensation Depth (CCD) is
the depth in the ocean where carbonate dissolution equals carbonate supply
. The CCD, on average, is 4500 meters below sea level. Below this level, sediment does not usually contain much calcite because it readily dissolves.
What is the calcite compensation depth quizlet?
calcium carbonate compensation depth.
the depth at which the rate of accumulation of calcareous sediments equals the rate of dissolution of those sediments
. Below this depth, sediment contains little or no calcium carbonate. biogenous sediment.
What is the approximate depth of the calcite compensation depth CCD in the ocean?
The average depth of the calcite compensation depth (CCD) is
4500 m in the Pacific and 5500 m in the Atlantic and shallows
when there is a greater supply of carbonate material to the seafloor. Only above the CCD can carbonate materials be deposited (below the CCD they dissolve and do not reach the sea floor).
What three steps are required for calcareous ooze to exist below the CCD quizlet?
What three steps are required for calcareous ooze to exist below the CCD?
Deposition of calcite shells above the CCD, cover of these shells by a non-calcareous material, and movement of the sea floor over millions of years
.
What happens below the calcium compensation depth?
When these shells fall below a certain water depth,
they begin to dissolve as ocean waters become undersaturated with respect to calcium carbonate
because of increasing pressure, decreasing temperature and increasing amounts of dissolved CO
2
. With increasing depth, the rate of dissolution increases.
How could you have calcareous oozes below the calcite compensation depth?
Which of the following explains why calcareous ooze is sometimes found below the calcite compensation depth (CCD)? Calcareous
ooze can be deposited above the CCD and covered with other sediment
, which protects it as the tectonic plate, and the ooze moves into deeper water.
What is the difference between the Lysocline and the CCD calcite compensation depth )?
The lysocline is the point where there is a dramatic decrease (up to 90%) in the amount of calcite structures present, but below this exists the CCD. At the CCD the rate of supply of calcite equals the rate of dissolution, and
no more calcite is deposited below this depth
.
What changes the compensation depth?
Once sunlight penetrates the water, the compensation depth varies with
ocean conditions
. For example, with an increase in production there is an increase in phytoplankton populations, as well as the numbers of zooplankton that eat the phytoplankton. … The disk is oriented so that it is parallel to the ocean surface.
What is the significance of the carbonate compensation depth CCD )?
The position of the CCD is important to the global carbon cycle because
it determines how much inorganic carbon is stored in deep ocean sediments
. The amount of CO
2
in the atmosphere also is interdependent with ocean productivity and the saturation state of seawater.
What depth is the CCD?
In the Atlantic basin the CCD is
500 metres (about 1,600 feet) deeper
than in the Pacific basin, reflecting both a high rate of supply and low rate of dissolution in comparison to the Pacific.
What controls the depth of the CCD?
The depth of the CCD is mainly controlled by two factors:
the degree of undersaturation with respect to calcite or aragonite and the flux of CaCO
3
debris from the surface
.
What is meant by compensation depth?
: the
depth
below the earth’s surface at which the topographic inequalities are compensated by variations in rock density so that all columns of rock or of rock and water above the
depth
have approximately equal weights.
Where do calcareous oozes exist on the seafloor quizlet?
Where do calcareous oozes exist on the seafloor?
underneath areas where calcareous organisms live, above the CCD
.
How does the carbonate compensation depth CCD impact the deposit of marine sediment?
Calcareous plankton and sediment particles can be found in the water column above the CCD. …
If the exposed sea bed is below the CCD tiny shells of CaCO
3
will dissolve
before reaching this level, preventing deposition of carbonate sediment.
What type of sediments are calcareous and siliceous oozes quizlet?
Calcareous ooze and siliceous ooze both have the consistency of thick mud and are examples of
biogenous sediments
. Calcareous ooze is formed from the calcium carbonate tests, or hard parts, of organisms. Siliceous ooze is formed from the siliceous tests of organisms.
