Source:http://linkedlifedata.com/resource/pubmed/id/11449263
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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
6843
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pubmed:dateCreated |
2001-7-12
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pubmed:abstractText |
Evidence is growing that hydrothermal venting occurs not only along mid-ocean ridges but also on old regions of the oceanic crust away from spreading centres. Here we report the discovery of an extensive hydrothermal field at 30 degrees N near the eastern intersection of the Mid-Atlantic Ridge and the Atlantis fracture zone. The vent field--named 'Lost City'--is distinctly different from all other known sea-floor hydrothermal fields in that it is located on 1.5-Myr-old crust, nearly 15 km from the spreading axis, and may be driven by the heat of exothermic serpentinization reactions between sea water and mantle rocks. It is located on a dome-like massif and is dominated by steep-sided carbonate chimneys, rather than the sulphide structures typical of 'black smoker' hydrothermal fields. We found that vent fluids are relatively cool (40-75 degrees C) and alkaline (pH 9.0-9.8), supporting dense microbial communities that include anaerobic thermophiles. Because the geological characteristics of the Atlantis massif are similar to numerous areas of old crust along the Mid-Atlantic, Indian and Arctic ridges, these results indicate that a much larger portion of the oceanic crust may support hydrothermal activity and microbial life than previously thought.
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pubmed:commentsCorrections | |
pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Jul
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pubmed:issn |
0028-0836
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pubmed:author |
pubmed-author:AT3-60 Shipboard Party,
pubmed-author:BlackmanD KDK,
pubmed-author:ButterfieldD ADA,
pubmed-author:Früh-GreenG LGL,
pubmed-author:KarsonJ AJA,
pubmed-author:KelleyD SDS,
pubmed-author:LebonG TGT,
pubmed-author:LilleyM DMD,
pubmed-author:OlsonE JEJ,
pubmed-author:RivizzignoPP,
pubmed-author:RoeK KKK,
pubmed-author:SchrenkM OMO
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pubmed:issnType |
Print
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pubmed:day |
12
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pubmed:volume |
412
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
145-9
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:11449263-Atlantic Ocean,
pubmed-meshheading:11449263-Biogenesis,
pubmed-meshheading:11449263-Evolution, Chemical,
pubmed-meshheading:11449263-Geologic Sediments,
pubmed-meshheading:11449263-Marine Biology,
pubmed-meshheading:11449263-Minerals,
pubmed-meshheading:11449263-Seawater,
pubmed-meshheading:11449263-Temperature,
pubmed-meshheading:11449263-Water Microbiology,
pubmed-meshheading:11449263-X-Ray Diffraction
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pubmed:year |
2001
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pubmed:articleTitle |
An off-axis hydrothermal vent field near the Mid-Atlantic Ridge at 30 degrees N.
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pubmed:affiliation |
University of Washington, School of Oceanography, Seattle, Washington 98195, USA. kelley@ocean.washington.edu
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, Non-P.H.S.
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