ESS 330 Lecture 3: Marine Sediments1

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Geology and Astronomy
ESS 330
Yong Hoon Kim

Marine Sediments Sediments Eroded particles Fragments of dust, dirt, other debris Suspension settling sediments settle out of water and accumulate on ocean floor. Provide clues to Earth history Marine organism distribution Ocean floor movements Ocean circulation patterns Climate change Global extinction events Marine Sediment Collection Cores hollow steel tube collects sediment columns Rotary drilling collects deep ocean sediment cores Paleoceanography and Marine Sediments Paleoceanography study of how ocean, atmosphere, and land interactions have produced changes in ocean chemistry, circulation, biology, and climate Marine sediments provide clues to past environmental conditions. Cores of sediment collected from sea floor. Marine Sediment Classification Classified by origin Lithogenous derived from land Biogenous derived from organisms Hydrogenous derived from water Cosmogenous derived from outer space Classification of Sediments Lithogenous Sediments Eroded rock fragments from land
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