Global climatic forcing of deep-sea benthic foraminiferal test size during the past 120 m.y.

Kunio Kaiho

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Stratigraphic distribution of the maximum diameter of the largest deep-water (>1500m water depths) calcareous trochospiral benthic foraminiferal tests in samples representing the past 120 m.y. shows that average values of the maximum diameter have doubled since Early Cretaceous time. Fluctuations in test size show size minima and six maxima. It is significant that the fluctuations correspond to changes in global climate and in deep-water dissolved oxygen conditions. This latter synchronism indicates that deep-sea foraminiferal teset size was likely controlled by fluctuations in the level of dissolved oxygen or related factors in the deep ocean caused by global climatic changes.

Original languageEnglish
Pages (from-to)491-494
Number of pages4
JournalGeology
Volume26
Issue number6
DOIs
Publication statusPublished - 1998 Jun

ASJC Scopus subject areas

  • Geology

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