No short reversals of Brunhes Age recorded in the Toba Tuffs, north Sumatra, Indonesia

J. F. Diehl, Tullis C. Onstott, C. A. Chesner, M. D. Knight

Research output: Contribution to journalArticle

34 Scopus citations

Abstract

Paleomagnetic and 40Ar/39Ar data indicate that two tuffs are present at Siguragura, North Sumatra, Indonesia: a reversely magnetized tuff (the earliest eruptive unit of the Toba caldera) of Matuyama age (0.84 Ma) and a normally magnetized tuff (the last eruptive unit of the Toba caldera) of late Brunhes age. No reversely magnetized tuffs of late Brunhes age are present at this location as suggested by previous investigators.

Original languageEnglish (US)
Pages (from-to)753-756
Number of pages4
JournalGeophysical Research Letters
Volume14
Issue number7
DOIs
StatePublished - Jul 1987

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

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