sedementary environment
DESCRIPTION
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Sedimentary MARINE ENVIRONMENT
Group N1
DEPOSITIONAL ENVIRONMENT
Delgado DiegoMera AdrianaNuez Marcela
MARINE ENVIRONMENTMarine environments are in the seas or oceans. Marine environments include reefs, the continental shelf, slope, rise, and abyssal plain.
MARINE ENVIRONMENTREEFS
Are wave-resistant, mound-like structures made of the calcareous skeletons of organisms such as corals and certain types of algae. Most modern reefs are in warm, clear, shallow, tropical seas, between the latitudes of 30N and 30S of the equator. Atolls are ring-like reefs surrounding a central lagoon
MARINE ENVIRONMENT
REEFSMARINE ENVIRONMENTTHE CONTINENTAL SHELF
Is the flooded edge of the continent. It is relatively flat (with a slope of less than 0.1o ), shallow (less than 200 m or 600 ft deep), and may be up to hundreds of miles wide. Continental shelves are exposed to waves, tides, and currents, and are covered by sand, silt, mud, and gravel. The flooding of the edges of the continents occurred when the glaciers melted at the end of the last Ice Age, about 10,000 years ago. MARINE ENVIRONMENTTHE CONTINENTAL SHELF
MARINE ENVIRONMENTTHE CONTINENTAL SLOPE AND CONTINENTAL RISE
Are located seaward of the continental shelf. The continental slope is the steep (5- 25 ) "drop-off" at the edge of the continent. The continental slope passes seaward into the continental rise, which has a more gradual slope. MARINE ENVIRONMENTTHE CONTINENTAL SLOPE AND CONTINENTAL RISE
MARINE ENVIRONMENTTHE ABYSSAL PLAIN
Is the deep ocean floor. It is basically flat, and is covered by very fine-grained sediment, consisting primarily of clay and the shells of microscopic organisms (such as foraminifera, radiolarians, and diatoms). Abyssal plain sediments may include chalk, diatomite, and shale, deposited over the basaltic ocean crust.
BIBLIOGRAPHYhttp://facstaff.gpc.edu/~pgore/geology/historical_lab/2010SedimentaryEnvironments.pdf
Lieberman, B. S. and Kaesler, R. 2010. Prehistoric life evolution and the fossil record. John Wiley & Sons Ltd , UK; 116-122pp
http://bc.outcrop.org/GEOL_B11L/lab7_14s.html