Investigation of Brazilian Kimberlites and Associated Rocks and Minerals

对金伯利岩及其伴生岩石和矿物的研究提供了与岩石学模型有关的重要且往往是独特的信息，以及古克拉通地区地幔中的岩浆和同位素过程。然而，可能90%的可用数据是基于南部非洲的金伯利岩。为了在地理上扩展现有的数据库，该项目将调查巴西金伯利岩、捕虏体和钻石的地质、矿物学和岩石学。这一结果将有助于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。获得的数据还将被用来比较和对比巴西的金伯利岩，以及来自南部非洲和其他地方的金伯利岩，特别是美国和西伯利亚的金伯利岩。

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.