(Table 1) Results of consolidaten tests for ODP Hole 131-808C and DSDP Hole 87-582 samples

Uniaxial reconsolidation tests were conducted on samples from four whole-round cores of similar hemipelagic silty mudstones from the Shikoku Basin sequence recovered at DSDP Site 582 and ODP Site 808. Two cores from Site 808 were from below the d?collement, in the prism toe, and two from Site 582 were from the undeformed trench wedge. The objectives of testing included the estimation of maximum past consolidation stress, the in-situ stress, the exploration of relationships between physical properties and mechanical state of the naturally consolidated mudstones, and comparison of the behavior of these natural sediments with similar but experimentally consolidated mudstone. Testing also determined the effect of pressure between laboratory (1 bar) and in-situ conditions on seismic velocity and on porosity. […]针对从深海钻探计划（Deep Sea Drilling Project，DSDP）582站位与大洋钻探计划（Ocean Drilling Program，ODP）808站位采集的四国盆地层序中4组相似半远洋粉砂质泥岩完整柱状岩心样品，开展了单轴再固结试验。其中808站位的2组岩心采自滑脱面（décollement）下方的增生楔前缘地带，582站位的2组岩心采自未变形的海沟楔状体区域。本次试验的目标包括：估算最大历史固结应力与原地应力，探究天然固结泥岩的物理性质与力学状态之间的关联，对比此类天然沉积物与经实验固结的相似泥岩的力学行为；同时测定实验室条件（1 bar）与原位条件间的压力差异对地震波速及孔隙度的影响。[…]