Oceanography

Sediment, a naturally occurring material that is broken down by processes of weathering and erosion, and is subsequently transported by the action of fluids such as wind, weewee supply, or ice, and/or by the force of gravity playacting on the particle itself. Sediments atomic number 18 most oft transported by water (fluvial processes), wind (aeolian processes) and glaciers. Beach sands and river channel deposits are examples of fluvial transport and deposition, though posit also often settles discover of slow-moving or standing water in lakes and oceanic dunes and loses are examples of aeolian transport and deposition. Glacial moraine deposits and cashbox are ice-transported depositorys.

The 4 main types of depositary Lithogenous = composed of fragments of preexistent rock material biogenous = composed of hard cadaver of once-living organisms Hydrogenous = formed when dissolved materials build hold out of root (precipitate) Cosmogenous = derived from outer space Origin of lithogenous sediment Forms by: Weathering = abandon of exposed rock Transportation = movement of sediment depository = settling and accumulation Lithogenous sediment composition Most lithogenous sediment is composed of quartz, which is: Abundant Chemically stable Durable Lithogenous sediment texture grain includes: Grain size Sorting round Maturity Distribution of lithogenous sediment Lithogenous sediment occurs as: neritic (near shore) deposits Beaches ! Continental shelves Turbidites Glacial-rafted debris Pelagic (deep ocean base of operations) deposits Abyssal ashes Origin of biogenous sediment Organisms that cook hard part die Material rains down on the ocean floor and accumulates as: Macroscopic shells, bones, teeth Microscopic tests (shells) If comprised of at...If you want to occur a full essay, order it on our website: OrderCustomPaper.com

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