Shallow Seismic Structure of the Ocean Crust and its Correlation with Seafloor Lithologies on the Kane Megamullion, Mid-Atlantic Ridge 23 degrees 20'-23 degrees 40' N

研究人员将利用现有的多通道地震数据和先前获得的大西洋中脊Kane Megamullion上的岩性样本，对该特征的海洋地壳结构、蛇纹岩化和辉长岩成矿作用的程度以及地壳非均质性的规模进行限制。凯恩Megamullion被认为是研究下地壳的潜在IODP钻探目标，下地壳被认为暴露在许多洋中脊附近的如此大规模的分离覆盖特征上。这项研究将涉及高分辨率旅行时间断层扫描、重力建模和地理信息系统（GIS）中特征的相关性，不仅将为最好的调查之一提供新的结构见解，而且还将有助于确定特征上潜在钻井地点的细节。更广泛的影响包括为一名处于职业生涯早期的科学家提供支持，为一名研究生和本科生暑期学生提供支持，以及扩大WHOI的地理信息系统能力。该项目还服务于与了解海洋地壳有关的IODP目标。

Using existing multichannel seismic data and previously acquired lithologic samples across the Kane Megamullion on the Mid-Atlantic Ridge, researchers will constrain oceanic crustal structure, the degree of serpentinization and gabbro plutonism, and the scale of crustal heterogeneities at this feature. The Kane Megamullion has been proposed as a potential IODP drilling target for the study of the lower crust that is thought to be exposed at such large-scale, detachment-draped features proximal to many of the mid-ocean ridges. The proposed research, which will involve high-resolution travel-time tomography, gravity modeling, and correlation of features within a Geographic Information System (GIS), will not only provide new insights into the structure of one of the best surveyed megamullions, but will also serve to identify the details of potential drilling sites on the feature. Broader impacts include support for a scientist who is early in his professional career, support for a graduate student and undergraduate summer student, and expansion of the GIS capabilities at WHOI. The project also serves IODP goals related to understanding oceanic crust.