Thermal pressurization and fluidization of pulverized cataclastic rocks formed in seismogenic fault zones
نویسندگان
چکیده
منابع مشابه
Thermal pressurization and onset of melting in fault zones
[1] We examine how frictional heating drives the evolution of temperature, strength, and fracture energy during earthquake slip. For small slip distances, heat and pore fluid are unable to escape the shearing fault core, and the behavior is well approximated by simple analytical models that neglect any transport. Following large slip distances, the finite width of the shear zone is small compar...
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[1] We present a unified analysis of physical properties of cataclastic fault rocks collected from surface exposures of the central Alpine Fault at Gaunt Creek and Waikukupa River, New Zealand. Friction experiments on fault gouge and intact samples of cataclasite were conducted at 30–33 MPa effective normal stress (sn′) using a double-direct shear configuration and controlled pore fluid pressur...
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Y. Hashimoto 1 , O. Tadai 2 , M. Tanimizu 3 , W. Tanikawa 3 , T. Hirono 4 , K. Aoike 5 , T. Ishikawa 3 , M. Murayama 6 , W. Soh 3 , S. R. Song 7 , K. Fujimoto 8 , T. Fukuchi 9 , M. Ikehara 6 , H. Ito 4 , H. Kikuta 3 , M. Kinoshita 10 , W. Lin 3 , K. Masuda 11 , T. Matsubara 9 , O. Matsubayashi 12 , T. Mishima 6 , K. Mizoguchi 13 , N. Nakamura 14 , K. Otsuki 14 , M. Sakaguchi 2 , T. Shimamoto 15...
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Geophysical observations have shown that transient slow slip events, with average slip speeds v on the order of 10−8 to 10−7 m/s, occur in some subduction zones. These slip events occur on the same faults but at greater depth than large earthquakes (with slip speeds of order ∼ 1 m/s). We explore the hypothesis that whether slip is slow or fast depends on the competition between dilatancy, which...
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Subduction earthquakes on plate-boundary megathrusts accommodate most of the global seismic moment release, frequently resulting in devastating damage by ground shaking and tsunamis. As many earthquakes occur in deep-sea regions, the dynamics of earthquake faulting in subduction zones is poorly understood. However, the Integrated Ocean Drilling Program (IODP) Nankai Trough Seismogenic Zone Expe...
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ژورنال
عنوان ژورنال: Journal of Structural Geology
سال: 2019
ISSN: 0191-8141
DOI: 10.1016/j.jsg.2017.12.010