Origin and Emplacement of the Oceanic Core Complex at IODP Site 735

根据这项合同，PI将分析录像带、静态相机图像，并对来自西南印度洋脊亚特兰蒂斯银行海洋核心复合体的5次现场调查巡航的挖泥船、凿岩机和潜水样本进行岩相学分析。他们将完成基于海岸的现场项目分析，并综合数据以发布地质图、记录地层学的解释性横截面以及综合体的定位。该场地毗邻Atlantis II F.Z.。在11日，我的老地壳暴露出一个400平方公里的下地壳辉长岩，该辉长岩与地幔沿着转换壁接触。它是1.5公里深的ODP孔735B的位置，这是下洋壳中唯一的深孔，也是正在等待的IODP提议的3公里新孔的位置。这项工作将为钻探和检验关于海洋地壳结构和岩性的想法提供地质背景。

Under this award, the PIs will analyze videotapes, still camera images, and do petrography of dredge, rock drill, and dive samples from 5 site survey cruises to the Atlantis Bank Oceanic Core Complex on the SW Indian Ridge. They will complete the shore based analysis of the field programs and synthesize the data to publish a geologic map, and interpretive cross-sections documenting the stratigraphy, and emplacement the complex. The site is located adjacent to the Atlantis II F.Z. on 11 My old crust exposing a 400 km2 lower crustal gabbro massif in contact with the mantle along the transform wall. It is the location of 1.5 km deep ODP Hole 735B, the only deep hole in the lower ocean crust, and the location of a pending IODP proposal for a new hole to 3 km. The work will provide the geological context for the drilling and tests of ideas on the structure and lithology of ocean crust.