Slow growth rate of a deep-sea clam determined by 228Ra chronology

K K Turekian; J K Cochran; D P Kharkar; R M Cerrato; J R Vaisnys; H L Sanders; J F Grassle; J A Allen

doi:10.1073/pnas.72.7.2829

Slow growth rate of a deep-sea clam determined by 228Ra chronology

Proc Natl Acad Sci U S A. 1975 Jul;72(7):2829-32. doi: 10.1073/pnas.72.7.2829.

Authors

K K Turekian, J K Cochran, D P Kharkar, R M Cerrato, J R Vaisnys, H L Sanders, J F Grassle, J A Allen

Abstract

The age of a deep-sea clam, Tindaria callistiformis, from 3803 m depth has been determined by 228Ra (6.7 year half-life) chronology of separated size fractions of a captured population. A length of 8.4 mm is attained in about 100 years. Shells of this size fraction show about 100 regularly spaced bands, indicating that the growth feature may be an annual one.

Publication types

Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

Animals
Bivalvia / growth & development*
Mathematics
Radium*
Seawater
Time Factors

Substances

Radium