Amphibolite-facies metamorphic rocks of the Mt. Tenzan area, northern Kyushu, Southwest Japan: Correlation with the Higo metamorphic rocks

• YAMADA Shusaku

  Department of Earth Sciences, Yamaguchi University

• OWADA Masaaki

  Department of Earth Sciences, Yamaguchi University

• OSANAI Yasuhito

  Division of Evolution of Earth Environment, Kyushu University

抄録

The metamorphic rocks exposed in the Sefuri and Tenzan areas, northwestern Kyushu, are composed mainly of mafic rocks with trace amounts of pelitic, ultramafic and calc-silicate rocks and crystalline limestone occurring as lenses or blocks. These rocks underwent regional metamorphism prior to the Cretaceous intrusive rocks. The metamorphic rocks in the Tenzan area, south of the Sefuri area, underwent amphibolite-facies metamorphism and estimated metamorphic P-T conditions of these rocks reach up to 700 °C and 4.0 kbar. On the other hand, the metamorphic conditions in the Sefuri area have been reported to be up to 850 °C and 5.5 kbar. The metamorphic P-T-t path of northwestern Kyushu is interpreted as a clockwise trajectory. These P-T conditions and lithological features suggest that the metamorphic rocks of northwestern Kyushu can be correlated with those of the Higo metamorphic terrane, which is thought to be a candidate of the eastern extension of collision zone between the North China and the South China cratons during Late Permian to the Triassic periods.

収録刊行物

• Journal of Mineralogical and Petrological Sciences

  Journal of Mineralogical and Petrological Sciences 103 (4), 291-296, 2008

  一般社団法人　日本鉱物科学会

キーワード

• <i>P-T</i> conditions
• Regional metamorphism
• Sefuri-Tenzan areas
• Northwestern Kyushu
• Higo meta- morphic terrane

詳細情報

• CRID: 1390001206546782720
• NII論文ID: 10021370048
• NII書誌ID: AA11460926
• DOI: 10.2465/jmps.080610b
• ISSN: 13493825
• ISSN: 13456296
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可