Defining chemical and mineralogical signatures of magmatic-hydrothermal systems

在地球内部，元素的质量传递不断发生，在元素足够集中的地方，就会出现矿床或自然资源。元素转移以多种方式发生，但岩浆作用和变质作用是两个非常重要和广泛的过程，在地球历史上一直活跃。为了：(1)了解地球演化，(2)地球内部的过程如何随时间演化，(3)自然资源如何形成并与地球演化相关，研究不同尺度上的元素动员以及元素间的关联是必要的。本文研究了元素传质的两个方面：(1)在一个大的地质区域（1000平方公里）内的一系列环境中，不同的金矿床和锡、钨、钼矿床的关联。公里)。然后，这项研究被用来检验这些元素组合是如何独立地或集体地与全球其他地区的地质演化联系起来的；(2)负责钽的动员和浓缩的过程，这是与社会需求相关的元素，但也用于理解地球演化和重要的地质过程。

Mass transfer of elements occurs within the earth on a continual basis and where there is sufficient concentration of elements ore deposits or natural resources occur. Elemental transfer occurs in many ways, but magmatic and metamorphic processes are two very significant and widespread ones that have been active through earth history. The study of elemental mobiization on different scales through time and how intra-element associations relate to earth processes is necessary in order to: (1) understand earth evolution, (2) how processes within the earth evolve through time, and (3) how natural resources form and relate to earth evolution. This proposal examines two aspects of mass transfer of elements: (1) the association of different gold deposits and tin, tungsten, molybdenum deposits in a range of environments within a single large geological area (1000s sq. km). This study is then used to examine how such elemental associations relate either independently or collectively to the geological evolution of such regions elsewhere globally; and (2) the processes that are responsible for the mobilization and concentration of tantalum, an element of relevance to societal needs, but also used in understanding earth evolution and important geological processes through time.