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  1. The benthic realm (or zone) extends along the ocean bottom from the shoreline to the deepest parts of the ocean floor. Within the pelagic realm is the photic zone , which is the portion of the ocean that light can penetrate (approximately 200 m or 650 ft).

  2. Pelagic clay accumulates in the deepest and most remote areas of the ocean. It covers 38% of the ocean floor and accumulates more slowly than any other sediment type, at only 0.10.5 cm/1000 yr. [1] Containing less than 30% biogenic material , it consists of sediment that remains after the dissolution of both calcareous and siliceous biogenic ...

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  4. Apr 24, 2024 · Pelagic carbonate sediment is derived from organisms (e.g., foraminifera) living in the ocean water (at various depths, but mostly near surface) that make their shells (a.k.a. tests) out of carbonate minerals such as calcite.

  5. Apr 24, 2024 · The main features of the Pacific Ocean floor are the continental slopes, which drop from about 200 meters to several thousand meters over a distance of a few hundred kilometers, the abyssal plains—exceedingly flat and from 4,000 meters to 6,000 meters deep, volcanic seamounts and islands, and trenches at subduction zones that are up to 11,000 ...

  6. All of the ocean’s open water is referred to as the pelagic realm (or zone). The benthic realm (or zone) extends along the ocean bottom from the shoreline to the deepest parts of the ocean floor. From the surface to the bottom or the limit to which photosynthesis occurs is the photic zone (approximately 200 m or 650 ft).

  7. The ocean floor is almost entirely underlain by mafic oceanic crust (mostly basalt and gabbro, as described in more detail below), while the continental slopes are underlain by felsic continental crust (mostly granitic and sedimentary rocks).

  8. The main features of the Pacific Ocean floor are the continental slopes, which drop from about 200 metres to several thousand metres over a distance of a few hundred kilometres, the abyssal plains—exceedingly flat and from 4,000 metres to 6,000 metres deep, volcanic seamounts and islands, and trenches at subduction zones that are up to 11,000 me...

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