Magmatic and Tectonic Controls on Crustal Construction at Lucky Strike a Slow-Spreading Segment of the Mid-Atlantic Ridge

大西洋中脊缓慢扩张段 Lucky Strike 地壳构造的岩浆和构造控制

• 批准号: 0623744
• 负责人: Samuel Soule
• 金额: $ 15.34万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-09-01 至 2009-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0623744&HistoricalAwards=false
• 关键词: Magmatic; Tectonic; Controls; Crustal; Construction

ABSTRACT 063744 (Soule)Intellectual Merit: This research identifies and characterizes the link between magma supply and plate boundary processes at the Lucky Strike segment of the mid-Atlantic Ridge in a slowly spreading seafloor setting. A better understanding of crustal architecture and seafloor construction are main research targets. Research consists primarily of a field program aboard a French ship and working closely with French collaborators, with land-based data analysis taking place at Woods Hole Oceanographic Institution in the US. High-resolution TowCam imaging of individual lava flows, faults, and fissures along the central valley and environs of the mid-Atlantic Ridge will be carried out and integrated with magnetic, submersible, bathymetric, and other field data collected on the cruise. The research will yield micro-topographic profiles, the collection of lava samples for analysis, and near-bottom magnetic data. Three locations on the Lucky Strike segment are slated for study. Outcomes of the work consist of a high-resolution map of the Lucky Strike area and models of seafloor construction and axial volcanism on a slow-spreading mid-ocean ridge.Broader Impacts: This work supports an early career scientist at the Woods Hole Oceanographic Institution in Massachusetts and engaged summer undergraduates in research. It also includes significant interaction with French scientists of the InterRidge community and includes cross training of a French graduate student in a US laboratory. Maps and images will be linked to GIS will be available over the web where it can be accessed by scientists and the public; and geochemical data will be archived in the web accessible geochemical database, PetDB.

摘要063744（Soule）学术价值：这项研究确定并描述了在缓慢扩张的海底环境中，大西洋中脊Lucky Strike段岩浆供应和板块边界过程之间的联系。 更好地了解地壳结构和海底建造是主要的研究目标。 研究主要包括在一艘法国船上进行的实地项目，并与法国合作者密切合作，陆基数据分析在美国伍兹霍尔海洋研究所进行。 将对沿着中央谷和大西洋中脊周围的个别熔岩流、断层和裂缝进行高分辨率TowCam成像，并将其与巡航中收集的磁性、潜水、测深和其他实地数据相结合。 这项研究将产生微地形剖面图，收集熔岩样本进行分析，以及近海底的磁力数据。 Lucky Strike部分的三个位置将用于研究。 这项工作的成果包括Lucky Strike地区的高分辨率地图以及缓慢扩张的洋中脊上的海底构造和轴向火山活动模型。更广泛的影响：这项工作支持了马萨诸塞州伍兹霍尔海洋研究所的一名早期职业科学家，并让暑期大学生参与研究。 它还包括与国际大洋中脊协会的法国科学家进行重要的互动，并包括在美国实验室对一名法国研究生进行交叉培训。 地图和图像将与地理信息系统相连接，并将在网上提供，供科学家和公众查阅;地球化学数据将存入网上可查阅的地球化学数据库PetDB。