Measuring mantle hydrogen to map ore fluids and model plate tectonics

测量地幔氢以绘制矿石​​流体图和板块构造模型

• 批准号: FT150100541
• 负责人: Dr Katherine Selway
• 金额: $ 44.68万
• 依托单位: University of South Australia
• 依托单位国家: 澳大利亚
• 项目类别: ARC Future Fellowships
• 财政年份: 2017
• 资助国家: 澳大利亚
• 起止时间: 2017-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/FT150100541
• 关键词: Measuring; mantle; hydrogen; map; ore

The goal of this project is to use magnetotellurics to measure mantle hydrogen content to aid in the discovery of new mineral deposits. Hydrogen controls the strength of Earth’s mantle and is a vital component of the systems that form giant ore deposits. However, mantle hydrogen content is unconstrained. Ore-forming fluids hydrate the mantle pathways on which they travel. The first aim of this project is to image these fluid pathways to improve mineral exploration techniques. Plate tectonic models assume that the lithospheric mantle is dehydrated but existing data from magnetotellurics and mantle rocks show high hydrogen contents. The second aim of this project is to create a map of the hydrogen content of the plates, which may lead to new models for continental evolution and mantle dynamics.

该项目的目标是利用大地电磁测量地幔氢含量，以帮助发现新的矿藏。氢控制着地幔的强度，是形成巨大矿床的系统的重要组成部分。然而，地幔氢含量是不受限制的。成矿流体使它们所经过的地幔通道水化。该项目的第一个目标是对这些流体路径进行成像，以改进矿物勘探技术。板块构造模型假设岩石圈地幔是脱水的，但现有大地电磁资料和地幔岩石资料显示氢含量高。该项目的第二个目标是绘制出板块含氢量的地图，这可能会导致大陆演化和地幔动力学的新模型。