calcareous ooze
Quick Summary
Calcareous ooze is a type of marine sediment found on the ocean floor, primarily composed of the skeletal remains of microscopic organisms made of calcium carbonate. These deposits form in deep-sea areas far from land, where the accumulation of these tiny shells is not obscured by land-derived sediments.12
Calcareous oozes cover about half of the world's seafloor, typically found at depths above 4,500 meters (approximately 14,800 feet). Below this depth, the calcium carbonate begins to dissolve. The specific depth at which the rate of carbonate accumulation equals the rate of dissolution is known as the Calcite Compensation Depth (CCD). The CCD varies between ocean basins, being deeper in the Atlantic than in the Pacific due to differences in carbonate supply and dissolution rates.32
Ask Britannica AI about this topic
Britannica doesn't have a full article on this topic, so we've curated a list of our relevant coverage.
- ooze
ā¦oozes are subdivided first into calcareous oozes (containing skeletons made of calcium carbonate) and siliceous oozes (containing skeletons made of silica) and then are divided again according to the predominant skeleton type. Thus, the calcareous oozes include globigerina ooze, containing the shells of planktonic foraminifera, and pteropod ooze, made upā¦
Read Moreā¦oozes are subdivided first into calcareous oozes (containing skeletons made of calcium carbonate) and siliceous oozes (containing skeletons made of silica) and then are divided again according to the predominant skeleton type. Thus, the calcareous oozes include globigerina ooze, containing the shells of planktonic foraminifera, and pteropod ooze, made upā¦
Read More - biogenic ooze
ā¦up of either carbonate (or calcareous) ooze or siliceous ooze. The skeletal material in carbonate oozes is calcium carbonate usually in the form of the mineral calcite but sometimes aragonite. The most common contributors to the skeletal debris are such microorganisms as foraminiferans and coccoliths, microscopic carbonate plates that coatā¦
Read Moreā¦up of either carbonate (or calcareous) ooze or siliceous ooze. The skeletal material in carbonate oozes is calcium carbonate usually in the form of the mineral calcite but sometimes aragonite. The most common contributors to the skeletal debris are such microorganisms as foraminiferans and coccoliths, microscopic carbonate plates that coatā¦
Read More
Atlantic OceanBottom depositsā¦Atlantic is covered with calcareous ooze. At depths greater than 16,400 feet (5,000 metres), the calcium carbonate content decreases, and the calcareous deposits give way to red clay. The finer material is not evident on submarine ridges, and the shells of pteropod gastropods (mollusks of the gastropod class comprising theā¦
Read Moreā¦Atlantic is covered with calcareous ooze. At depths greater than 16,400 feet (5,000 metres), the calcium carbonate content decreases, and the calcareous deposits give way to red clay. The finer material is not evident on submarine ridges, and the shells of pteropod gastropods (mollusks of the gastropod class comprising theā¦
Read More
Pacific OceanBottom depositsCalcareous globigerina ooze occurs in the shallower parts of the South Pacific, the dissolving power of the seawater at great depths being sufficient to dissolve calcareous material to such an extent that these oozes are not generally found at depths in excess of about 15,000ā¦
Read MoreCalcareous globigerina ooze occurs in the shallower parts of the South Pacific, the dissolving power of the seawater at great depths being sufficient to dissolve calcareous material to such an extent that these oozes are not generally found at depths in excess of about 15,000ā¦
Read More