Growth Rate of a Vesicomyid Clam from the Galápagos Spreading Center

DOI Web Site 被引用文献3件
  • Karl K. Turekian
    Department of Geology and Geophysics, Box 6666, Yale University, New Haven, Connecticut 06511
  • J. Kirk Cochran
    Department of Geology and Geophysics, Box 6666, Yale University, New Haven, Connecticut 06511

抄録

<jats:p> The shell of a 19-centimeter-long vesicomyid clam, collected live at the Galápagos spreading center hydrothermal field, was sampled along growth lines and analyzed for members of the <jats:sup>238</jats:sup> U and <jats:sup>232</jats:sup> Th decay series. The growth rate, determined from the <jats:sup>210</jats:sup> Po/ <jats:sup>210</jats:sup> Pb and <jats:sup>228</jats:sup> Th/ <jats:sup>228</jats:sup> Ra couples, is about 4 centimeters per year along the axis of maximum growth, which is 12 centimeters long. This yields an age of 3 to 4 years for this clam. </jats:p>

収録刊行物

  • Science

    Science 214 (4523), 909-911, 1981-11-20

    American Association for the Advancement of Science (AAAS)

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