Petrologic and Geochemical Study of Leucogranite Generation: The Black Hills, South Dakota

淡色花岗岩生成的岩石学和地球化学研究：南达科他州布莱克山

• 批准号: 9417979
• 负责人: Peter Nabelek
• 金额: $ 15.95万
• 依托单位: University of Missouri-Columbia
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-02-01 至 1999-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9417979&HistoricalAwards=false
• 关键词: Petrologic; Geochemical; Study; Leucogranite; Generation

9417979 Nabelek This award will support a comprehensive geochemical and petrologic study of the generation of peraluminous leucogranites with focus on the Precambrian terrane in the Black Hills, South Dakota. Because petrological and geochemical relationships in the area are similar to other peraluminous leucogranite suires worldwide, the results from the study will result in a better understanding of perlauminous granite generation in general. The analytical work will include SEM and X-ray image analysis of the distribution of accessory phases, analysis of whole rocks and mineral separates for major and trace elements, analysis of minerals by electron microprobe, oxygen isotope analyses of whole rocks and minerals and possibly ICP-MS analysis of fluid inclusions. The data will be interpreted in view of published experimental studies of granite generation and theory of trace elements and isotopic behavior during crustal melting.

9417979 Nabelek该奖项将支持对过铝淡色花岗岩的生成进行全面的地球化学和岩石学研究，重点是南达科他州黑山的前寒武纪地体。由于该地区的岩石学和地球化学关系与世界上其他过铝淡花岗岩套相似，因此这项研究的结果将有助于从总体上更好地了解过铝花岗岩的生成。分析工作将包括副相分布的扫描电子显微镜和X射线图像分析，全岩和主要元素和微量元素的矿物分离分析，电子探针矿物分析，全岩和矿物的氧同位素分析，以及可能的流体包裹体的电感耦合等离子体质谱分析。这些数据将根据已发表的关于花岗岩生成的实验研究以及地壳熔融期间的微量元素和同位素行为理论进行解释。