Investigation of Brazilian Kimberlites and Associated Rocks and Minerals

巴西金伯利岩及伴生岩石和矿物调查

• 批准号: 8616025
• 负责人: Henry O. Meyer
• 金额: $ 1.3万
• 依托单位: Purdue Research Foundation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-07-01 至 1989-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8616025&HistoricalAwards=false
• 关键词: Investigation; Brazilian; Kimberlites; Associated; Rocks

Studies of kimberlites and associated rocks and minerals provide significant and often unique information pertinent to petrologic models, and magmatic and isotopic processes in the mantle beneath ancient cratonic regions. However, probably 90% of the available data are based on southern African kimberlites. In order to geographically expand the existing database, this project will investigate the geology, mineralogy and petrology of Brazilian kimberlites, xenoliths and diamonds. The results will be used to aid in modelling the magmatic evolution of kimberlite and the nature of the lithosphere and upper mantle beneath the Brazilian shield. The data obtained will also be used to compare and contrast the Brazilian kimberlites, about which little is known, with those from southern Africa and elsewhere, notably the U. S. and Siberia.

对金伯利岩及其伴生岩石和矿物的研究为岩石学模型以及古克拉通地区地幔的岩浆和同位素过程提供了重要而独特的信息。然而，可能90%的可用数据是基于南部非洲金伯利岩。为了在地理上扩大现有数据库，该项目将调查巴西金伯利岩、捕体和钻石的地质、矿物学和岩石学。研究结果将用于帮助模拟金伯利岩的岩浆演化以及巴西地盾下岩石圈和上地幔的性质。获得的数据还将用于比较和对比巴西的金伯利岩，对其知之甚少，与来自非洲南部和其他地方，特别是美国和西伯利亚的金伯利岩。