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Hemipelagic sediment is a type of marine sediment that consists of clay and silt-sized grains from land or organisms. It differs from pelagic sediment in composition and deposition rate, and can be used to qualify climatic changes and sediment provenances.
Pelagic sediment or pelagite is a fine-grained sediment that accumulates as the result of the settling of particles to the floor of the open ocean, far from land. These particles consist primarily of either the microscopic, calcareous or siliceous shells of phytoplankton or zooplankton ; clay -size siliciclastic sediment ; or some mixture of these.
Siliceous ooze is a type of deep sea sediment composed of silica-based skeletons of microorganisms such as diatoms and radiolarians. Learn about its formation, accumulation, distribution, and marine chert formation from this comprehensive article.
Marine sediment is the accumulation of insoluble particles on the seafloor, derived from various sources such as land, organisms, and volcanoes. Cosmogenous sediment is a type of volcanic ash that forms from cosmic rays in the atmosphere and falls into the ocean.
Bioturbation is the process of animals or plants mixing and altering soils and sediments through burrowing, ingestion, and defecation. It has profound effects on the environment, biodiversity, and ecosystem services, and can be categorized by different functional groups of bioturbators.
The Paleocene section is an essentially complete, exposed record 165 m (541 ft) thick, mainly composed of alternating hemipelagic sediments deposited at a depth of about 1,000 m (3,300 ft). The Danian deposits are sequestered into the Aitzgorri Limestone Formation , and the Selandian and early Thanetian into the Itzurun Formation .
An abyssal plain is an underwater plain on the deep ocean floor, usually found at depths between 3,000 and 6,000 metres. Learn how abyssal plains are created by plate tectonics, sedimentation, and oxygen-poor conditions, and how they support diverse and unique marine life forms.
Olive oil is one of cooking’s most versatile ingredients.From using it to make salad dressings, to fry veggies, or even just to accompany bread, it has a multitude of uses.