http://www.newsday.com/news/politics/wire/sns-ap-seafloor-vents,0,4690318.story?coll=sns-ap-politics-headlines|
uly 24, 2003, 2:28 PM EDT
WASHINGTON -- A collection of giant seafloor hot vents is thousands of years old and may be the type of place where life first developed on Earth, a new study suggests.
Located in the mid-Atlantic about 1,500 miles off the U.S. East Coast, the collection of towering vents discovered in 2000 has been nicknamed the Lost City.
Water coming out of the vents is heated by chemical reactions rather than the volcanic action seen at the better-known hot smoker vents that have been studied in the past, according to the research team led by Gretchen L. Fruh-Green of Switzerland's Institute for Mineralogy and Petrology.
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The Lost City type of vents may be conducive to life because their fluids are less acidic and are rich in organic compounds, compared to the well-known black-smoker vent systems heated by volcanism, the researchers said. In addition, the water from these vents ranges from 105 degrees to 170 degrees Fahrenheit, compared to 700 degrees at volcanic vents.