A Petrofabric Study of Shear Micro-fold

廣島大學地學研究報告 Issue 12 Page 445-461 published_at 1963-03-30
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Title ( eng )
A Petrofabric Study of Shear Micro-fold
Creator
SUZUKI Takashi
Source Title
廣島大學地學研究報告
Geological report of the Hiroshima University
Issue 12
Start Page 445
End Page 461
Abstract
Quartz and calcite fabrics of shear micro-folds in a phyllite and a crystalline limestone from the Sambagawa Metamorphic Zone at Tai and Motoyama in Central Shikoku, were analysed. Partial and collective diagrams were made from the orientation data of the c axes of quartz grains and of the c axes and the {0112} twinned lamellae of calcite grains on the various sectors of the shear micro-folds. The patterns of fabric diagrams from the straight limb of fold are comparatively simple, while those from the knee of the fold are more complex. It is conceivable that in the knee the later shearing was too weak to obliterate completely the earlier fabric. The relationship between q-Richtungen and shear planes of a fold was also discussed.
Descriptions
木野崎吉郎教授退官記念特集号
Language
eng
Resource Type departmental bulletin paper
Publisher
廣島大學理學部地學教室
Date of Issued 1963-03-30
Publish Type Version of Record
Access Rights open access
Source Identifier
[ISSN] 0073-2303
[NCID] AN00213676