New Hydrothermal Vents Discovered.

A team of twenty-seven U.S. marine scientists beginning an intensive program of exploration at the Lau Basin, in the South Pacific, has discovered a new cluster of hydrothermal vents along a volcanically active crack in the seafloor.

About a mile and a half down, the basin could hold answers to questions about the origin of life on Earth, say the scientists, whose plans for their "South Pacific Odyssey" include an unprecedented number of research expeditions to this geologically unique "back-arc basin" during the next two years. In a back-arc basin, spreading splits the ocean floor apart very close to a volcanic arc. The way the geology works in a back-arc basin is ...

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