Magmatic and Tectonic Segmentation of the Mid-Atlantic Ridge30 Degrees to 34 Degrees North, A U.S. - Soviet Cooperative Study

美苏合作研究大西洋中脊北纬 30 度至 34 度的岩浆和构造分段

• 批准号: 9204105
• 负责人: John Casey
• 金额: $ 15.29万
• 依托单位: University of Houston
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-06-01 至 1995-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9204105&HistoricalAwards=false
• 关键词: Magmatic; Tectonic; Segmentation; Mid; Atlantic

The P.I. proposes to continue a U.S.-Russian collaborative project (started in 1989) to study geochemical, tectonic, and structural segmentations along the MAR between Hayes and Atlantis Transforms. The Russian vessel Boris Petrov will be used for overall geophysical and bathymetric surveys and ALVIN will be used to sample ridge segments at shorter wavelength intrasegement scale. The goal is to evaluate the petrogenetic processes (mantle source variations, depth of melting, crystal fractionation, magma mixing etc.) that are responsible for the observed geochemical and tectonic variations at all scales of ridge segmentation.

私家侦探建议继续美国-俄罗斯合作项目 （1989年开始）研究地球化学，构造和构造 分割沿着海耶斯和亚特兰蒂斯之间的MAR变换。 俄罗斯船只鲍里斯·彼得罗夫将用于全面 地球物理和测深测量以及ALVIN将用于 样品脊段在较短的波长intrasegement规模。 目的是评价成岩过程（地幔源 变化，熔融深度，结晶分异，岩浆混合 等等）。它们负责观察到的地球化学和 在所有尺度的脊分段的构造变化。