Origin of Anomalous Ultramafic and Gabbroic Cumulates at DSDP Site 334: Trace Element Constraints on the Diversity of Parental MORBS

DSDP 334 号站点异常超镁铁质和辉长岩堆积物的起源：微量元素对亲代 MORBS 多样性的限制

• 批准号: 9202809
• 负责人: Donald Elthon
• 金额: $ 4.48万
• 依托单位: University of Houston
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-05-01 至 1994-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9202809&HistoricalAwards=false
• 关键词: Origin; Anomalous; Ultramafic; Gabbroic; Cumulates

The P.I. wishes to analyze the mineral phases of a set of cumulate gabbros and ultramafics from DSDP Site 334 for major and trace elements with electron and ion microprobe, respectively. Preliminary calculations suggest that liquids from which these phases crystallized must have been unusually depleted in Na and Ti but relatively high in Mg. Strangely, lavas of such compositions have never been found at the Mid-oceanic-ridges. The proposed study will provide constraints on the nature and origin of such liquids.

私家侦探希望分析一组矿物相， DSDP站点334的堆积辉长岩和超镁铁岩， 用电子探针和离子探针分别测定微量元素。 初步计算表明，这些液体 结晶相中Na和Ti的含量必定异常地减少 但镁含量相对较高。 奇怪的是，这种成分的熔岩 从未在中洋脊发现过 拟议 研究将提供限制的性质和起源， 液体.