本申请将从几何形态、岩石物理、岩石化学和模态方面研究日本Nankai海槽IODP C0002点的钻孔取芯(IODP338航次)中发育的脉构造、变形带、剪切带和断层等宏观的松软沉积物变形构造，查明这些构造的性质、尺度、产状、内部结构、相对时代、空间分布、孔隙度变化、可能的岩石化学或矿物学变化等，找出它们之间在几何形态、岩石物理和岩石化学上的差同，且与地表露头的同类变形构造做对比，进而确定它们的形成机制，由此增进对隐伏增生楔的表层中松软沉积物构造变形的认识。

This proposal aims at the geometrical, petro-physical, petro-chemical and modal aspects of maroscopic soft-sediment deformation structures, including vein structures, deformation bands, shear bands, faults, and so forth, in cores at the IODP C0002 Site, Nankai trough, IODP 338 Expedition. Their slip senses, sizes, orientations, internal fabrics, relative ages, spatial distributions, changes in porosity, and possible petro-chmeical and/or mineralogical changes, as well as their counterparts at outcrop, will be investigated in various ways, from which we know the similarities and differences in geometry, petro-physics and petro-chemistry between the structures of different types, and from which we determine determine the mechainisms of the structures. These results will add knowledage about soft-sediments deformation in shallow parts of the submerging accretionary prisms.