Petrology and geochemistry of diamond mantle xenoliths

金刚石地幔捕虏体的岩石学和地球化学

• 批准号: 100049-2006
• 负责人: Schulze, Daniel
• 金额: $ 2.17万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2006
• 资助国家: 加拿大
• 起止时间: 2006-01-01 至 2007-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=332502
• 关键词: Petrology; geochemistry; diamond; mantle; xenoliths

The proposed research involves examination of samples of the interior of Earth that have been transported to the surface as accidental inclusions in volcanic rocks such as kimberlite.  These samples come from depths as great as 250 kilometers, regions of Earth's interior so deep that they cannot be directly sampled by other methods.  The research will include investigations into the chemical composition, including the stable isotope composition, of a variety of such materials including diamonds.  As diamonds are inert and unreactive, minerals included within them can retain evidence of the conditions during diamond formation, which may have occurred billions of years ago.  Such investigations allow researchers to reconstruct the geologic evolution of both the continents and their otherwise inaccessible deep roots.

拟议中的研究包括检查地球内部的样本，这些样本是作为金伯利岩等火山岩中的意外包裹体被运送到地表的。这些样本来自250公里深的地球内部，这些区域非常深，无法用其他方法直接取样。研究将包括调查化学成分，包括稳定同位素组成。由于金刚石是惰性和不反应的，包含在其中的矿物可以保留金刚石形成期间的条件的证据，这些调查使研究人员能够重建大陆及其周围环境的地质演化过程。否则难以深入的根。