7_sediment source - Where do the sediments on the bottom of...

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Unformatted text preview: Where do the sediments on the bottom of the ocean come from? Sediment sources: Terrigenous (land) or lithogenic (rock) sediment (see previous lecture) Cosmogenic sediment Meteors Nickel-iron spherules & silicate chrondrules. Authigenic (seawater) sediment Manganese nodules & crusts: Phosphorites: Glauconite: Biogenic sediment Biogenic sediment Reading: Introduction to Ocean Sciences, 2 nd Ed., Segar, pp. 170 to 175, 183 to 185. A crater is some 65 feet wide and 15 feet deep after a rocky meteorite reportedly fell in southern Peru on Wednesday. Quick Quiz Name a sediment (classified by source) found in everywhere on the planet, but in very small quantities and a sediment is formed by chemical interactions with seawater A. Biogenic and lithogenic B. Lithogenic and authigenic C.Cosmogenic and lithogenic D.Cosmogenic and authigenic E. Authigenic and biogenic Where do the sediments on the bottom of the ocean come from?...
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This note was uploaded on 12/03/2010 for the course ENVIRON GS 222/ENV taught by Professor Ingridhendy during the Fall '10 term at University of Michigan.

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7_sediment source - Where do the sediments on the bottom of...

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