A 2007 report on water quality linked the reef's decline to fertilizers, chemicals, and soil being washed from Queensland farms into the ocean. One researcher says the reef will be dead within 30 years unless human activity changes quickly.
reef -- n. A large ridge or mound-like structure within a body of water that is built by calcareous organisms such as corals, red algae, and bivalves; barrier reef- n.
barrier reef A coral reef separated from the mainland by a lagoon.
basalt A dark colored extrusive igneous rock composed chiefly of calcium plagioclase and pyroxene. Extrusive equivalent of gabbro, underlies the ocean ...
reef
A reef is an undersea growth of coral near the surface of the water.
relief map
A relief map is a topographic map that uses different colors or shades to indicate elevations.
Coral Reef Ridge of limestone found generally below the ocean surface.
See also: atoll; reef; volcanic island; archipelago; Geography.
Island is also a novel by Aldous Huxley
Island is the name of a commune in the Yonne département in France.
Professor D G Krige worked at the Witwatersrand gold reef complex in South Africa in the early 1950s when he discovered that two or more gold assays, determined in samples selected at positions with different coordinates in a finite sample space, ...
This extract from a chart of the Timor Sea has a great deal more information about the water depths around Ashmore Reef than the two extracts above from an Indian Ocean chart.
Representative fraction; Reef; Radio frequency
RfC
Reference concentration ...
(1994) demonstrate the usefulness of equal-area grids and GIS for analyzing global patterns of coral reef fish diversity.
Organic (reef and fossiliferous) limestones and bacterial iron ores are examples.
Bioturbated:
An adjective used in reference to a sediment or sedimentary rock.
 See also: Surface, Area, Feature, Information, Map
  
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