Collaborative: Geophysical Investigation of the Gulf of Aden: Determining how Hotspot Proximity affects Tectonic, Magmatic, and Stratigraphic Development of Conjugate Margins

合作：亚丁湾地球物理调查：确定热点邻近度如何影响共轭边缘的构造、岩浆和地层发育

• 批准号: 9912007
• 负责人: John Diebold
• 金额: $ 33.29万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-09-01 至 2004-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9912007&HistoricalAwards=false
• 关键词: Collaborative; Geophysical; Investigation; Gulf; Aden

OCE 99-12007DieboldAward is for a geophysical study of the western and central Gulf of Aden conjugate continental margins to define the tectonic, stratigraphic, and magmatic development of one of the world's key areas for understanding how the initiation of continental rifting proceeds. Deep-penetration, multi-channel reflection and Ocean Bottom Seismometer (OBS) refraction data, swath bathymmetry, magnetic, and gravity data will be collected in support of the objectives, which are centered around determining how the Afar mantle plume has affected the development of continental breakup and rift-flank structural development in the Gulf of Aden area. Specifically, variation of strain partitioning, magmatism, and crustal structure with variation of distance from the Afar plume will be examined in the course of reconstructing conjugate margin evolution. This work will also serve as a site survey in support of the ODP pre-proposal 528-Pre, and addresses an important goal of the ODP Long Range Plan, that of understanding early conjugate-margin development and continent-ocean transitions.***

diboldaward是对亚丁湾西部和中部共轭大陆边缘进行的地球物理研究，以确定世界上理解大陆裂谷如何开始的关键地区之一的构造、地层和岩浆发展。为了支持研究目标，将收集深穿透、多通道反射和海底地震仪（OBS）折射数据、条带水深对称、磁场和重力数据，以确定阿法尔地幔柱如何影响亚丁湾地区大陆分裂和裂谷翼构造发育。具体地说，在重建共轭边缘演化过程中，将考察应变分配、岩浆活动和地壳结构随离阿法尔地幔柱距离的变化。这项工作还将作为支持ODP预提案528-Pre的现场调查，并解决ODP长期计划的一个重要目标，即了解早期共轭边缘发展和大陆-海洋过渡