A Detailed Electron Microscopy, Magnetic Anisotropy, and X-ray Goniometry Study of the Relationship Between Magnetic and Clay Fabric During Compaction

Ken Kodama以前的工作调查了 沉积物的磁性 压缩。 特别令人感兴趣的是， 在温和的时间记录的古纬度签名 沉积在海底的物质在随后的 压实 在本研究中，儿玉将进行 在微观尺度上进行研究， 了解晶粒的相互作用和重新定向 促成了这一变化。 控制磁铁矿的混合物- 承压粘土将承受水力荷载， 以及粘土组构、磁铁矿 颗粒排列和沉积物压实程度将是 用电子显微镜和X射线技术检查。

Previous work by Ken Kodama has investigated changes in the magnetic properties of sediments subjected to various degrees of compaction. Of special interest has been the discovery that the paleolatitude signature recorded at the time of gentle settling on the seafloor becomes degraded during subsequent compaction. In the present study, Kodama will conduct investigations on the microscopic scale to gain an understanding of how grain interaction and reorientation contributes to this change. Controlled mixtures of magnetite- bearing clays will be subjected to hydraulic loading to imitate burial, and relationships between clay fabric, magnetite particle alignment, and degree of sediment compaction will be examined with electron microscopy and X-ray techniques.