Eocene to Quaternary benthic foraminifers and paleobathymetry of the Izu-Bonin Arc, Legs 125 and 126

K. Kaiho

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)

Abstract

Benthic foraminifers obtained from ODP Sites 782, 786, 790, 791 and 792 were examined. The results indicate total basement uplift in the inner part of the Bonin arc-trench system since late Oligocene and total basement subsidence in the outer part of the system since late Eocene. The last occurrence (LO) of Stilostomella spp. and Pleurostomella spp. and the first occurrence (FO) of Bulimina aculeata d'Orbigny occurred consistently at 0.7 Ma at all three arc proximal sites (790, 791 and 792). This fact is taken to suggest a change of water mass, from one originating from the central part of the ocean to that originating from ocean-margin areas at that time. -from Author

Original languageEnglish
Pages (from-to)285-310
Number of pages26
JournalUnknown Journal
DOIs
Publication statusPublished - 1992

ASJC Scopus subject areas

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)

Fingerprint Dive into the research topics of 'Eocene to Quaternary benthic foraminifers and paleobathymetry of the Izu-Bonin Arc, Legs 125 and 126'. Together they form a unique fingerprint.

Cite this