Deformation of quartz in an inner shear zone of the Ryoke belt: an example in the Kishiwada area, Osaka Prefecture

Hideo Takagi, T. Mizutani, K. Hiro-Oka

Research output: Chapter in Book/Report/Conference proceedingChapter

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Abstract

The Kawai mylonite zone, an inner shear zone of the Ryoke belt, trends N75°E oblique to the general trend (E-W) of the gneissose granites in the Kishiwada area, Osaka Prefecture. Mylonites were formed under sinistral shear movement and cataclasis was overprinted along the Kawai cataclasite zone within the mylonite zone. Mylonites in the northern part of the cataclasite zone are characterized by the occurrence of P-type (higher T and lower δε/δt type) quartz whereas those in the southern part by S-type (lower T and higher δε/δt type) quartz. This contrast suggests that both mylonites were formed under different deformation environment (T and/or δε/δt) and thereafter juxtaposed together during a fault movement along the cataclasite zone. -from English summary

Original languageEnglish
Title of host publicationJournal - Geological Society of Japan
Pages869-886
Number of pages18
Volume94
Edition11
Publication statusPublished - 1988
Externally publishedYes

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ASJC Scopus subject areas

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

Cite this

Takagi, H., Mizutani, T., & Hiro-Oka, K. (1988). Deformation of quartz in an inner shear zone of the Ryoke belt: an example in the Kishiwada area, Osaka Prefecture. In Journal - Geological Society of Japan (11 ed., Vol. 94, pp. 869-886)