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Fault strength, healing and stability in the Nankai Trough accretionary prism off Kii Peninsula, Japan, as illustrated by friction experiments on gouge of a cored sample
Tectonophysics ( IF 2.7 ) Pub Date : 2024-10-16 , DOI: 10.1016/j.tecto.2024.230526 Kyuichi Kanagawa, Junya Fujimori, Tomoya Nakanishi, Sayumi Sagano, Michiyo Sawai
Tectonophysics ( IF 2.7 ) Pub Date : 2024-10-16 , DOI: 10.1016/j.tecto.2024.230526 Kyuichi Kanagawa, Junya Fujimori, Tomoya Nakanishi, Sayumi Sagano, Michiyo Sawai
In order to investigate fault strength, healing and stability in the Nankai Trough accretionary prism off Kii Peninsula, Japan, we conducted two series of triaxial friction experiments on gouge of a silty-claystone sample cored from 2183.6 mbsf (meters below seafloor) at IODP Site C0002, at confining pressure (P c ), pore-water pressure (P H 2 O ) and temperature (T ) conditions simulating those in situ at 1000–6000 mbsf there; rate-stepping tests at axial displacement rates (V axial ) changed stepwise among 0.1, 1 and 10 μm/s, and slide-hold-slide tests at V axial = 1 μm/s with hold time (t h ) ranging from 10 to 104 s.
中文翻译:
日本纪伊半岛附近南海槽增生棱柱的断层强度、愈合和稳定性,通过对取芯样品的凿孔进行摩擦实验来说明
为了研究日本纪伊半岛附近南海槽增生棱柱的断层强度、愈合和稳定性,我们在 IODP 站点 C0002 对从 2183.6 mbsf(海底以下米)取芯的粉砂质粘土岩样品进行了两个系列的三轴摩擦实验,在围压 (Pc)、孔隙水压力 (PH2O) 和温度 (T) 条件下模拟了 1000-6000 mbsf 的原位模拟;轴向位移速率 (Vaxial) 下的速率步进测试在 0.1、1 和 10 μm/s 之间逐步变化,Vaxial = 1 μm/s 的滑动保持-滑动测试,保持时间 (th) 范围为 10 至 104 s。
更新日期:2024-10-16
中文翻译:
日本纪伊半岛附近南海槽增生棱柱的断层强度、愈合和稳定性,通过对取芯样品的凿孔进行摩擦实验来说明
为了研究日本纪伊半岛附近南海槽增生棱柱的断层强度、愈合和稳定性,我们在 IODP 站点 C0002 对从 2183.6 mbsf(海底以下米)取芯的粉砂质粘土岩样品进行了两个系列的三轴摩擦实验,在围压 (Pc)、孔隙水压力 (PH2O) 和温度 (T) 条件下模拟了 1000-6000 mbsf 的原位模拟;轴向位移速率 (Vaxial) 下的速率步进测试在 0.1、1 和 10 μm/s 之间逐步变化,Vaxial = 1 μm/s 的滑动保持-滑动测试,保持时间 (th) 范围为 10 至 104 s。