Initiation of tectonic mélange formation associated with the smectite-illite transition at 2–4 km depth in a subduction zone: Hota accretionary complex, central Japan
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Published:August 15, 2018
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CiteCitation
Yuzuru Yamamoto, Jun Kameda, Mayuko Fukuyama, Haruka Yamaguchi, 2018. "Initiation of tectonic mélange formation associated with the smectite-illite transition at 2–4 km depth in a subduction zone: Hota accretionary complex, central Japan", Geology and Tectonics of Subduction Zones: A Tribute to Gaku Kimura, Timothy Byrne, Michael B. Underwood, III, Donald Fisher, Lisa McNeill, Demian Saffer, Kohtaro Ujiie, Asuka Yamaguchi
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ABSTRACT
Deformation in a subduction zone and the related transition from smectite to illite within the aseismic-seismic transition zone (2–4 km below the seafloor) were analyzed by studying an onland accretionary complex that was previously buried to a depth of just 2–4 km. The early to middle Miocene Hota accretionary complex of central Japan is an excellent example of an accretionary complex that records shallow underthrusting at the updip end of the seismogenic zone. Two types of subduction-related deformation are preserved in the complex: phacoidal deformation (D1) characterized by rhombus-shaped fragments of mudstone with a random fabric and a thin...
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Geology and Tectonics of Subduction Zones: A Tribute to Gaku Kimura
CONTAINS OPEN ACCESS

GeoRef
- accretion
- accretionary wedges
- Asia
- basins
- Cenozoic
- clay minerals
- deformation
- Far East
- faults
- fore-arc basins
- genesis
- illite
- Japan
- melange
- middle Miocene
- Miocene
- Neogene
- plate tectonics
- plates
- seismicity
- sheet silicates
- silicates
- smectite
- subduction
- subduction zones
- tectonics
- Tertiary
- thrust faults
- Hota accretionary complex