Modelling rock deformation mechanisms and genesis of ore deposits in shear zones, Carajás, Brazil

我们提出了一个为期半年的试点项目，详细研究巴西太古宙至元古代Carajás横流系统的矿化和变形过程之间的相互关系。CVRD矿业公司最近发布了一个巨大的勘探钻孔测井数据库，加上定向岩心材料，以及对新形成的露头的访问，为在各种空间尺度上以前所未有的精度研究矿床的三维几何形状及其结构设置提供了机会。我们打算从总数据集的一个子集中开发一个矿床的随机模型，并在另一个子集上测试其预测能力。如果这种方法产生了有希望的结果，针对整个可用量的模型的完整项目将安排一年的持续时间。试点研究和后续项目（如果适用的话）都将以已经与贝尔萨姆大学和达勒姆大学合作进行的比较经典的结构研究的结果为基础。

We propose a half-year pilot project for a detailed study of the interrelations between mineralizing and deformation processes in the Archaean to Proterozoic Carajás Transcurrent System, Brazil. The recent release by the CVRD mining company of an enormous database of exploration borehole logs plus orientated core material and access to newly created outcrops raises the opportunity to investigate the 3D geometry of the mineral deposits and their structural setting on various spatial scales and in unprecedented accuracy. We intend to develop a stochastic model of the deposits from a subset of the total dataset and test its predictive capacities on another subset. If this approach yields promising results, the full project aiming at a model of the entire available volume will be scheduled for a one year duration. Both the pilot study and, if applicable, the successor project will build on the results of a more classical structural study already under way in partnership with the universities of Belém and Durham.