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seamount

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seamount

Large submarine volcanic mountain rising at least 3,000 ft (1,000 m) above the surrounding seafloor; smaller submarine volcanoes are called sea knolls, and flat-topped seamounts are called guyots. Seamounts are abundant and occur in all major ocean basins. By the late 1970s more than 10,000 seamounts had been reported in the Pacific Ocean basin alone. Virtually every oceanographic expedition discovers new seamounts, and it is estimated that about 20,000 exist worldwide.


seamount [′sē‚mau̇nt]
(geology)
A mountain rising from the ocean floor as a result of submarine volcanism.


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The action immediately placed a 1,200-mile archipelago of islands and atolls, coral reefs, seamounts and shoals under strict control by federal and state agencies "in order to permanently protect the area's pristine coral reefs and unique marine species.
Others protect dense thickets of red tree corals or the unusual communities that have developed around seamounts.
The early work on hot spots concentrated on long intra-oceanic chains, like the Hawaiian-Emperor seamount chain, which proved to be fairly barren in terms of economic mineralization.
 
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