Distribution and mineral assemblages of bedded manganese deposits in Shikoku, Southwest Japan

Implications for accretion tectonics

M. Nakagawa, M. Santosh, S. Maruyama

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Numerous bedded manganese and manganese-iron ore deposits occur in Shikoku, Southwest Japan. The mineralogy, wall rock characteristics and fossil age data of the deposits are synthesized in this paper. Their mineral assemblages correlate well with the progressive metamorphic grade of the accretionary complexes in Shikoku. Based on the plate tectonic framework of subduction-accretion process, the deposits are considered to have formed by metamorphism of Mn-Fe-nodule-bearing siliceous sediments on the ocean floor.

Original languageEnglish
Pages (from-to)609-621
Number of pages13
JournalGondwana Research
Volume16
Issue number3-4
DOIs
Publication statusPublished - Dec 2009
Externally publishedYes

Fingerprint

manganese deposit
manganese
accretion
tectonics
mineral
wall rock
iron ore
plate tectonics
ore deposit
mineralogy
metamorphism
subduction
seafloor
fossil
sediment
distribution

Keywords

  • Accretionary complex
  • Bedded manganese deposits
  • Deep-sea Mn-Fe nodules
  • Metamorphism
  • Shikoku

ASJC Scopus subject areas

  • Geology

Cite this

Distribution and mineral assemblages of bedded manganese deposits in Shikoku, Southwest Japan : Implications for accretion tectonics. / Nakagawa, M.; Santosh, M.; Maruyama, S.

In: Gondwana Research, Vol. 16, No. 3-4, 12.2009, p. 609-621.

Research output: Contribution to journalArticle

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