31. 40Ar/39Ar Ages of submarine rocks from the Line Islands: Implications on the origin of the Line Islands

  1. George H. Sutton,
  2. Murli H. Manghnani,
  3. Ralph Moberly and
  4. Ethel U. Mcafee
  1. K. Saito and
  2. M. Ozima

Published Online: 17 MAR 2013

DOI: 10.1029/GM019p0369

The Geophysics of the Pacific Ocean Basin and Its Margin

The Geophysics of the Pacific Ocean Basin and Its Margin

How to Cite

Saito, K. and Ozima, M. (1976) 40Ar/39Ar Ages of submarine rocks from the Line Islands: Implications on the origin of the Line Islands, in The Geophysics of the Pacific Ocean Basin and Its Margin (eds G. H. Sutton, M. H. Manghnani, R. Moberly and E. U. Mcafee), American Geophysical Union, Washington, D. C.. doi: 10.1029/GM019p0369

Author Information

  1. Geophysical Institute, University of Tokyo, Tokyo 113, Japan

Publication History

  1. Published Online: 17 MAR 2013
  2. Published Print: 1 JAN 1976

ISBN Information

Print ISBN: 9780875900193

Online ISBN: 9781118663592

SEARCH

Keywords:

  • Geophysics—Pacific area—Congresses;
  • Woollard, George Prior, 1908

Summary

40Ar/39Ar ages of two submarine basalts dredged from the north to central part of the Line Islands volcanic chain and of two DSDP basalts (DSDP-66 and DSDP-I67) drilled from the adjacent ocean floor are presented. The ages of the two dredged basalts are inconsistent with a hot spot origin of the Line Islands chain. Sample DSDP-66 gives a 40Ar/39Ar age of 52 m.y., which is younger than the fossil age in the overlying sediments. It is suggested that basalt DSDP-66 is a later intrusive.