Accomplishment-Based Renewal: Experimental Determination of the PVTX and Phase Equilibrium Properties of Aqueous Chloride Fluids at Magmatic-hydrothermal Conditions
基于成果的更新:岩浆-热液条件下氯化物水溶液的 PVTX 和相平衡性质的实验测定
基本信息
- 批准号:1624589
- 负责人:
- 金额:$ 47.79万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:2016
- 资助国家:美国
- 起止时间:2016-07-01 至 2019-06-30
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Increasing world population, combined with an overall increase in global standard of living, requires an ever-increasing amount of resources to meet human demands. The Earth is the source of all the minerals, metals and other natural resources required to manufacture the products needed to sustain a modern technological society. Exploration models designed to discover new occurrences of minerals and metals are based on an understanding of the various physical, chemical and biological processes that lead to the accumulation of metals and other resources into economic concentrations. Most mineral and metal deposits are formed when heated fluids in the Earth's crust dissolve, transport and deposit metals to form ore deposits, and most of the ore-forming fluids are highly-saline brines containing various salts. The goal of this project is to develop a better understanding of the fundamental properties of saline fluids at temperature and pressure conditions appropriate for ore-forming systems. This information, in turn, will lead to development of better mineral exploration models and contribute to economic stability and prosperity and promote a more secure future by reducing dependence on external sources to provide the raw materials needed for technological and defense applications. The project will also provide training in state-of-the-art experimental and analytical techniques for several students and young researchers from diverse backgrounds. Most natural saline fluids in the Earth's crust are approximated by the H2O-NaCl-KCl-CaCl2-FeCl2 system. Previous work has shown that the physical and chemical behavior of saline fluids at elevated temperatures and pressures is highly dependent on the total salinity of the fluid as well as the ratios of the various major salt components in the fluid. In this project experiments will be conducted to determine the Pressure-Volume-Temperature-Composition (PVTX) and phase equilibrium properties of aqueous chloride fluids at magmatic-hydrothermal PTX conditions. Synthetic fluid inclusions containing fluids with various binary, ternary, quaternary and quinary compositions within this five-component system will be trapped at magmatic-hydrothermal PTX conditions. Phase boundaries (liquid-vapor curves and liquidi), critical points, and isochores (lines of constant density) will be determined using the synthetic fluid inclusion technique that has proven to be successful in numerous earlier studies. Empirical numerical recipes to estimate compositions of fluids in the various sub-systems based on microthermometric and microanalysis of natural fluid inclusions will be developed from the experimental data. These data provide the basis for interpretations of microthermometric data from natural fluid inclusions and provide feedstock for future studies to develop empirical numerical models describing the PVTX properties of hydrothermal fluids over the range of PTX conditions appropriate for crustal hydrothermal systems. The results of this project will lead to a better understanding of the phase equilibrium and PVTX behavior of ?real? magmatic-hydrothermal fluids, and provide a solid basis for developing more robust mineral exploration models based on data obtained from studies of fluid inclusions in natural systems.
世界人口的增加,加上全球生活水平的全面提高,需要不断增加的资源来满足人类的需求。地球是制造维持现代技术社会所需产品所需的所有矿物、金属和其他自然资源的来源。旨在发现新矿物和金属矿点的勘探模型基于对导致金属和其他资源积累到经济集中的各种物理、化学和生物过程的理解。大多数矿物和金属矿床是地壳中受热流体溶解、搬运和沉积金属形成矿床时形成的,而成矿流体大多数是含有各种盐类的高盐卤水。该项目的目标是更好地了解在适合成矿系统的温度和压力条件下盐水流体的基本特性。这些信息反过来将导致开发更好的矿产勘探模型,并有助于经济稳定和繁荣,并通过减少对外部来源的依赖来提供技术和国防应用所需的原材料,从而促进更安全的未来。该项目还将为来自不同背景的几名学生和年轻研究人员提供最先进的实验和分析技术的培训。地壳中的大多数天然含盐流体近似为H2O-NaCl-KCl-CaCl2-FeCl2 系统。先前的工作表明,盐水流体在高温和高压下的物理和化学行为高度依赖于流体的总盐度以及流体中各种主要盐成分的比例。在该项目中,将进行实验以确定岩浆-热液 PTX 条件下氯化物水溶液的压力-体积-温度-成分 (PVTX) 和相平衡特性。在这个五组分系统中含有各种二元、三元、四元和五元成分的流体的合成流体包裹体将在岩浆-热液 PTX 条件下被捕获。相界(液-汽曲线和液)、临界点和等容线(恒定密度线)将使用合成流体包裹体技术来确定,该技术在许多早期研究中已被证明是成功的。将根据实验数据开发基于天然流体包裹体的显微测温和显微分析来估计各个子系统中流体成分的经验数值方法。这些数据为解释天然流体包裹体的显微测温数据提供了基础,并为未来的研究提供了原料,以开发描述热液流体在适合地壳热液系统的 PTX 条件范围内的 PVTX 特性的经验数值模型。该项目的结果将有助于更好地理解“真实”的相平衡和 PVTX 行为。岩浆热液流体,并为基于自然系统中流体包裹体研究获得的数据开发更强大的矿产勘探模型提供坚实的基础。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Robert Bodnar其他文献
Robert Bodnar的其他文献
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{{ truncateString('Robert Bodnar', 18)}}的其他基金
Collaborative Research: An Experimental and Analytical Investigation of the Parameters That Influence Measured CO2 in Plagioclase-Hosted Melt Inclusions in MORB
合作研究:对影响 MORB 斜长石熔体包裹体中 CO2 测量值的参数进行实验和分析研究
- 批准号:
1634211 - 财政年份:2016
- 资助金额:
$ 47.79万 - 项目类别:
Standard Grant
In situ monitoring of reaction progress during serpentinization of oceanic lithosphere using synthetic fluid inclusions
使用合成流体包裹体原位监测海洋岩石圈蛇纹石化过程中的反应进程
- 批准号:
1459433 - 财政年份:2015
- 资助金额:
$ 47.79万 - 项目类别:
Standard Grant
Experimental and Modeling Studies of the PVTX and Phase Equilibrium Properties of Crustal Fluids
地壳流体的PVTX和相平衡性质的实验和模拟研究
- 批准号:
1019770 - 财政年份:2010
- 资助金额:
$ 47.79万 - 项目类别:
Continuing Grant
An intergrated physical and chemical model for silica transport and deposition in sub-seafloor magmatic-hydrothermal environments
海底岩浆-热液环境中二氧化硅迁移和沉积的综合物理和化学模型
- 批准号:
0928472 - 财政年份:2009
- 资助金额:
$ 47.79万 - 项目类别:
Standard Grant
Accomplishment Based Renewal: Experimental Studies of the PTX Properties of Immiscible Fluids at Crustal PT Conditions
基于成果的更新:地壳 PT 条件下不混溶流体的 PTX 性质的实验研究
- 批准号:
0711333 - 财政年份:2007
- 资助金额:
$ 47.79万 - 项目类别:
Continuing Grant
Technician Support: Laser Ablation ICP-MS Facility
技术人员支持:激光烧蚀 ICP-MS 设备
- 批准号:
0447237 - 财政年份:2005
- 资助金额:
$ 47.79万 - 项目类别:
Continuing Grant
Acquisition of an Excimer-Laser Based Laser Ablation ICP-MS System
采购基于准分子激光的激光烧蚀 ICP-MS 系统
- 批准号:
0420849 - 财政年份:2004
- 资助金额:
$ 47.79万 - 项目类别:
Standard Grant
Upgrading of the Vibrational Spectroscopy Laboratory at Virginia Tech
弗吉尼亚理工大学振动光谱实验室升级
- 批准号:
0322119 - 财政年份:2004
- 资助金额:
$ 47.79万 - 项目类别:
Standard Grant
Experimental Study of Water Leakage from Melt Inclusions in Quartz During Laboratory Heating
石英熔体夹杂物实验室加热过程中漏水的实验研究
- 批准号:
0337094 - 财政年份:2004
- 资助金额:
$ 47.79万 - 项目类别:
Standard Grant
Development of a Numerical Model for the PVTX Properties of Na-K-Ca-Fe-C1 Solutions in Magmatic/Hydrothermal Ore Deposits
岩浆/热液矿床中 Na-K-Ca-Fe-C1 溶液 PVTX 特性数值模型的开发
- 批准号:
0125918 - 财政年份:2002
- 资助金额:
$ 47.79万 - 项目类别:
Standard Grant
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基于成就的更新:洋中脊热液系统中铁和氢传输的相分离和矿物流体平衡的实验研究
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