Table of Contents
Why are there no calcareous ooze deposits in deep water?
Calcium carbonate dissolves readily under pressure and in cold water, therefore deeper ocean floors will have less calcareous ooze. At a depth of about 5 km, the rate of dissolution (how quickly calcium carbonate dissolves) is faster than the rate at which calcium shells are raining down from above.
Where is calcareous ooze most likely to be found?
Where is calcareous ooze most likely to be found in surface sediments in the ocean? Calcareous ooze is most likely to be found in relatively shallow areas with warm surface water.
Where is calcareous ooze found in the ocean?
The distribution of modern calcareous ooze is generally found along mid-ocean ridges and in low-latitude ocean basins. The reason for this occurrence is that most mid-ocean ridges are at a level higher than the CCD and that low-latitude ocean basins are typically warm and often not as deep as the CCD.
Why is there more abyssal clay in the Pacific ocean and more calcareous ooze in the Atlantic ocean?
Abyssal clays are more abundant in the Pacific than the Atlantic because calcareous oozes dissolve before reaching the sea floor in the latter ocean basin. less than 30% biogenous material.
Under what conditions is calcium carbonate more likely to dissolve?
Calcium carbonate is most likely to dissolve in water which has come from high latitudes and in which the carbon dioxide content has been increased by oxidative processes.
Where would you expect to find a high concentration of siliceous ooze?
Typically, siliceous ooze is present only in regions of high biological surface water productivity (such as the equatorial and polar belts and coastal upwelling areas), where depth of the seafloor is deeper than the CCD.
What are deep sea oozes?
Ooze, pelagic (deep-sea) sediment of which at least 30 percent is composed of the skeletal remains of microscopic floating organisms. Oozes are basically deposits of soft mud on the ocean floor.
Which ooze is most abundant in Atlantic ocean?
Globigerina ooze
Globigerina ooze is the most widespread of the oozes and occurs in both the Atlantic and Indian oceans. Pteropod ooze is found only in the mid-Atlantic.
Which ooze is more common on mid ocean ridges?
-Pelagic means “deep water” deposits which makes biogenous oozes the most common pelagic deposits because they are found beneath relatively shallow deep-ocean areas along the mid ocean ridge.