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Published byVirgil White Modified over 7 years ago
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Deep Sea Sediments Photomicographs courtesy of Paula Worstell, Scripps Institution of Oceanography and BOSCORF, National Oceanographic Center, Southampton, UK and Ocean Drilling Program See: http://www.boscorf.org/repository/curatorial-reference/pacific-transect for more information on sedimentary regimes of the Pacific basin. http://www.boscorf.org/repository/curatorial-reference/pacific-transect
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SUBEQUATORIAL PACIFIC OCEAN Water depth 5399m 3ºN, 165ºW Sample Ref: PROA- 131G-2, Top Courtesy: Paula Worstell, SIO Description: Radiolarians, as seen here, are abundant in sediments along an equatorial band in the Pacific Ocean. Diatoms are also present in this sample. High power (x100) view. Radiolarian ooze with some diatoms
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Brown Pelagic Clay with porcelanite laminae, from South Pacific gyre, IODP Exp 329. This sediment is similar to that found in the North Pacific gyre illustrated in Figure 4 in the mini lesson (Cazfoto)
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Pelagic Brown Clay NORTH PACIFIC OCEAN Water depth: 4940m PPL 25ºN, 162ºW Sample Ref: JYN2-1G, Courtesy: Paula Worstell, SIO (4) Deep sea red clay with sponge spicules Description: This deep-sea clay contains a few siliceous sponge spicules. High power (x100) view.
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Siliceous Mud Diatom clay with some radiolarian fragments. High power (x100) view. North Pacific, 47ºN, 164ºW Sample Ref: CHIN-6G, Top Courtesy: Paula Worstell, SIO
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Terrigenous Mud Back-Scattered Electron microscope image of terrigenous mud. Sediment from Alboran Sea, ODP Site 976B, 556 m below seafloor. Note foraminiferal fossils plus obvious angular quartz grains. This type of sediment is a mixture that could be derived from a continent and include fossils from the open ocean Source: OPD and Wikepedia
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Chalk or lithified calcareous ooze. This could be similar to the type of sediment accumulating in an open ocean environment on a high area such as a seamount. (source Wikipedia)
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