Igneous Petrology of Upper Crustal Sections of the East Pacific Rise at Hess Deep

赫斯深渊东太平洋隆起上地壳部分的火成岩岩石学

• 批准号: 9102828
• 负责人: James Hawkins
• 金额: $ 4.97万
• 依托单位: University of California-San Diego Scripps Inst of Oceanography
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-09-01 至 1992-03-01
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9102828&HistoricalAwards=false
• 关键词: Igneous; Petrology; Upper; Crustal; Sections

Continuous sections of uppermost ocean crust produced at the East Pacific Rise, including the pillow-sheeted dike and dike-gabbro transitions, have been exposed by rifting in the Hess Deep were explored and sampled during 11 dives of ALVIN in 1990. Over 200 rock samples recovered in 9 dredge hauls. The preliminary studies will be extended by obtaining a comprehensive suite of major-oxide, trace-element, and mineral data using the new ICP-MS at Scripps Institution of Oceanography.

1990年“阿尔文”号潜水11次，在赫斯深的裂谷作用下，揭示了东太平洋隆起产生的上洋地壳的连续剖面，包括枕状层状脉和脉-辉长岩过渡。在9次疏浚中回收了200多个岩石样本。通过使用斯克里普斯海洋学研究所的新型ICP-MS获得一套全面的主要氧化物、微量元素和矿物数据，初步研究将得到扩展。