Three-dimensional magnetotelluric imaging of lithospheric-scale mineral systems from source to deposit

从源头到矿床的岩石圈规模矿物系统的三维大地电磁成像

• 批准号: LP0774891
• 负责人: Prof Graham Heinson
• 金额: $ 24.28万
• 依托单位: The University of Adelaide
• 依托单位国家: 澳大利亚
• 项目类别: Linkage Projects
• 财政年份: 2007
• 资助国家: 澳大利亚
• 起止时间: 2007-05-31 至 2009-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/LP0774891
• 关键词: Three; dimensional; magnetotelluric; imaging; lithospheric

Geochemical studies indicate that world-class mineral deposits are partly sourced from fluids emerging from Earth's mantle and lower crust. Finding major mineral deposits in the future will therefore require knowledge of which parts of the crust and mantle yield the most prospective locations. However, there are few methods that can image deep Earth resources, and these can be very expensive. We propose to develop the magnetotelluric method as a low-cost and rapid approach for delineating 3D information on deep mineral systems beneath existing major deposits, and adapting this to explore in greenfield locations.

地球化学研究表明，世界级矿藏部分源自地幔和下地壳中出现的流体。 因此，未来寻找主要矿藏需要了解地壳和地幔的哪些部分最有前景。 然而，能够对地球深层资源进行成像的方法很少，而且这些方法可能非常昂贵。 我们建议开发大地电磁方法作为一种低成本、快速的方法，用于描绘现有主要矿床下方深层矿物系统的 3D 信息，并对其进行调整以在新建地点进行勘探。