Fracture Zone Hot-Spot Interactions Along the Marquesas Fracture Zone

在1987年对马克萨斯岛链的考察中， 主要的调查人员绘制了一个高岭的一部分， 马克萨斯隆起和马克萨斯断裂的交汇处 区 他们得出结论，断裂带是一个薄弱区， 太平洋板块使得岩浆从一个弱热点到达 表面上 该项目将调查马克萨斯的部分地区， 使用多波束测深工具，重力， 磁性、单通道反射和疏浚。 调查 将研究三个热点的岩浆表现， 在它们遇到断裂带的过程中和之后。 形态 在热点交叉点处的断裂带将是 与其他没有遇到热点的细分市场形成对比。 总体目标是更好地限制骨折的起源 区域地形，内在尺寸和时间连续性 热点，它们与岩石圈不连续面的相互作用， 马克萨斯最古老部分的方位和范围 断裂带

During a 1987 expedition to the Marquesas Island chain, the principal investigators mapped part of a high ridge that lies at the intersection of the Marquesas swell with the Marquesas fracture zone. They concluded that the fracture zone is a weak zone within the Pacific plate that allowed magmas from a weak hotspot to reach the surface. This project will survey sections of the Marquesas fracture zone using multibeam bathymetric tools, gravity, magnetics, single-channel reflection, and dredging. The survey will study the magmatic expression of three hotspots before, during, and after they encounter the fracture zone. The morphology of the fracture zone at the hotspot intersections will be contrasted with other segments that have not encountered hotspots. The overall goals are to better constrain the origin of fracture zone topography, the intrinsic dimension and temporal continuity of hotspots, their interaction with lithospheric discontinuities, and the azimuth and extent of the oldest section of the Marquesas fracture zone.