Japan STA Program: Magmatic-Hydrothermal Fluids in the Ore Deposits and Active Geothermal Systems

Muntean 9800963 该奖项支持日本科学技术厅（STA）在日本筑波的日本地质调查局为John Muntean博士提供为期24个月的博士后奖学金。 Muntean博士将与矿物和燃料资源部高级科学家Jeffrey Hedenquist博士合作开展一个题为“矿床和活动地质系统中的岩浆热液流体”的研究项目。" 拟议的研究项目将侧重于活火山热液系统和（或）矿床的岩浆-热液流体连续模型，将从不同方向采用不同方法进行测试-活系统与已灭绝系统，从地表到浅层到深层的暴露，以及采用实地地质研究和实验室地球化学工作。 岩浆热液作用反映了岩浆体、围岩和地球水圈之间的物理和化学相互作用。 在过去的十几年里，在识别和理解火山、地热系统和矿床中的岩浆热液过程方面取得了重大进展。 最近的进展点的岩浆热液流体的连续性，从岩浆水流体与外部输入通过流体的混合遗产，从岩浆水流体，岩石，和地表起源的水流体之间的复杂的相互作用的结果。 这些岩浆热液流体在上地壳地球元素循环中起着重要作用。 对岩浆-热液流体和过程的进一步了解对火山灾害评估、地热能开发以及热液金属矿床的勘探和开发具有深远的影响。 ***

Muntean 9800963 This award supports a 24 month Science and Technology Agency of Japan (STA) Postdoctoral Fellowship for Dr. John Muntean at the Geological Survey of Japan in Tsukuba, Japan. Dr. Muntean will work with Dr. Jeffrey Hedenquist, Senior Scientist, Mineral and Fuel Resources Department, on a research project entitled "Magmatic-Hydrothermal Fluids in the Ore Deposits and Active Geothermal Systems." The proposed research project will focus on the continuum model for magmatic-hydrothremal fluids, both for active volcanic-hydrothermal systems and or deposits, which will be tested from a variety of directions with a variety of approaches--active versus extinct systems, exposures from the surface through shallow to great depth, and using field- based geological study plus laboratory-based geochemical work. Magmatic-hydrothermal processes reflect the physical and chemical interactions between magma bodies, the surrounding rocks, and Earth's hydrosphere. Significant progress has been made in the last dozen years on identifying and understanding magmatic-hydrothermal processes in volcanoes, geothermal systems, and ore deposits. The recent progress points to a continuum of magnatic-hydrothermal fluids ranging from magmatic aqueous fluids with little external input through to fluids of mixed heritage that results from complex interactions between magmatic aqueous fluids, rocks , and aqueous fluids of surficial origin. These magmatic-hydrothermal fluids play a major role in cycling of the earth's elements in the upper crust. Increased understanding of magmatic-hydrothermal fluids and processes has profound implications in assessment of volcanic hazards, development of geothermal energy, and the exploration and development of hydrothermal metallic ore deposits. ***