Siliceous oozes are largely composed of the silica based skeletons of microscopic marine organisms such as diatoms and radiolarians. Other components of siliceous oozes near continental margins may include terrestrially derived silica particles and sponge spicules.

The siliceous oozes include radiolarian ooze, comprising essentially brown clay with more than 30 percent of the skeletons of warm-water protozoa, and diatom ooze, containing the frustules (tiny shells) of diatoms.

2021年2月15日 · Siliceous oozes are sediments dominantly composed dominantly of SiO2 (silica). Two dominant groups of organisms that contribute siliceous remains: diatoms and radiolarians. Diatoms are the most common plankton. Diatoms are phytoplankton (single-celled microscopic marine plants).

The modern oozes gather in latitudes where high organic productivity of floating planktonic radiolarians and diatoms takes place in the warm surface waters. As individual organisms die, their shells settle slowly to the abyssal…

Siliceous oozes are composed of opal (amorphous, hydrated silica) that forms the skeleton of various microorganisms, including diatoms, radiolarians, siliceous sponges, and silicoflagellates.

Siliceous rocks are sedimentary rocks that consist of SiO 2, either in the form of amorphous silica (opal) or microcrystalline, cryptocrystalline quartz or chalcedony. These rocks are generally referred to as cherts.

2023年1月23日 · Siliceous ooze dominates two broad belts of the seafloor: one surrounding the equator and another at the high latitudes near Antarctica. While the sheer mass of material raining down is large,...

Siliceous ooze: Siliceous ooze is made up of at least 30% silica skeletons or frustules, the hard parts of diatoms (algae with glass-like cell walls) and radiolarians (single-celled organisms with intricate skeletons).

In this article we shall consider the origin, deposition and lithification of siliceous ooze. As with calcareous ooze, siliceous ooze is formed from the tests of microorganisms; in the case of siliceous ooze, the organisms come in two varieties, diatoms and radiolarians.

'Ooze' refers to sedimentary deposits found on the ocean floor, such as siliceous oozes containing diatom or radiolarian fragments, which are typically located in specific regions like beneath the Southern Ocean or tropical parts of the Pacific and Indian Oceans.