Book Chapter
Sedimentary block-in-matrix fabric affected by tectonic shear, Miocene Nabae complex, Japan
Author(s)
Soichi Osozawa
;
Soichi Osozawa
Department of Earth Sciences, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
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Terry Pavlis
;
Terry Pavlis
Department of Geological Sciences, University of Texas at El Paso, El Paso, Texas 79968, USA
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Martin F.J. Flower
Martin F.J. Flower
Emeritus, Department of Earth and Environmental Sciences, University of Illinois at Chicago, Chicago, Illinois 60607-7059, USA
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Published:August 01, 2011
Mélanges represent a significant part of the Miocene Nabae accretionary complex. Such mélanges show sheath folds with D1 axial plane pressure-solution cleavage, whereas the coherent unit shows asymmetric folding with D1 slaty cleavage. In addition, the mélanges are characterized by D1 asymmetric shearing, which includes both thrust and right-lateral-sense components, in contrast to D1 pure shear that characterizes the coherent unit. Thus, this tectonic style acted on the climax of prism development can be referred to as a tectonic mélange. However, because the D1 shear displacement is almost negligible, D0 normal faults and basaltic dikes, operated when matrix sediments were...
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GSA Special Papers
Mélanges: Processes of Formation and Societal Significance
Author(s)
John Wakabayashi;
John Wakabayashi
Department of Earth and Environmental Sciences, California State University, Fresno, Fresno, California, USA
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Yildirim Dilek
Yildirim Dilek
Department of Geology, Miami University, Oxford, Ohio, USA
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Geological Society of America

Volume
480
Copyright:
© 2011 Geological Society of America
Attribution: You must attribute the work in the manner specified by the author or licensor (but no in any way that suggests that they endorse you or your use of the work). Noncommercial - you may not use this work for commercial purpose. No Derivative works - You may not alter, transform, or build upon this work. Sharing - Individual scientists are hereby granted permission, without fees or further requests to GSA, to use a single figure, a single table, and/or a brief paragraph of text in other subsequent works and to make unlimited photocopies of items in this journal for noncommercial use in classrooms to further education and science.
ISBN print:
9780813724805
Publication date:
August 01, 2011
GeoRef
Index Terms/Descriptors
- accretionary wedges
- Asia
- Cenozoic
- clastic dikes
- clastic rocks
- cleavage
- deformation
- Eocene
- fabric
- Far East
- faults
- folds
- foliation
- Japan
- melange
- Miocene
- Neogene
- normal faults
- Paleogene
- preferred orientation
- pressure solution
- sandstone
- sedimentary rocks
- sedimentary structures
- shear
- shear stress
- sheath folds
- Shikoku
- Shimanto Belt
- soft sediment deformation
- stereographic projection
- structural analysis
- tectonics
- terrigenous materials
- Tertiary
- Cape Muroto
- Nabae Complex
Latitude & Longitude
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