Collaborative Research: Tests of Models of Crustal Accretion and Magnetization at Endeavor Deep

合作研究：Endeavour Deep 地壳吸积和磁化模型的测试

• 批准号: 0137173
• 负责人: James Natland
• 金额: $ 18.43万
• 依托单位: University of Miami
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-07-01 至 2007-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0137173&HistoricalAwards=false
• 关键词: Collaborative; Research; Tests; Models; Crustal

The Endeavor Deep along the Juan Fernandez microplate exposes a 50 km-long 3-4 km-deep section of young ocean crust created at very fast spreading rates. This projects involves combined geophysical surveys with in situ observations and sampling along the northeast wall of the Endeavor Deep. High-resolution DSL-120 side-scan sonar will completely insonify the scarp and be used to map regional trends in lithology and structure at 10 m resolution. Rock dredging will identify specific targets for more detailed sampling. Digital imaging and petrologic sampling transects with Jason II will groundtruth the regional view and provide a high-resolution perspective of representative sections. Deep-towed 3-component magnetometer data will map the magnetization of oceanic crust at these same scales.

沿着胡安·费尔南德斯微板块的奋进深渊暴露了一段 50 公里长、3-4 公里深的年轻洋壳部分，该部分以非常快的扩散速度形成。 该项目涉及地球物理调查与沿奋进深渊东北壁的现场观测和采样相结合。 高分辨率 DSL-120 侧扫声纳将完全穿透陡坡，并用于以 10 m 分辨率绘制区域岩性和结构趋势图。 岩石疏浚将确定具体目标以进行更详细的采样。 Jason II 的数字成像和岩石学采样横断面将证实区域视图的真实性，并提供代表性剖面的高分辨率视角。 深拖三分量磁力计数据将绘制相同尺度下洋壳的磁化强度图。