Fertility of subduction and post subduction magmatism associated with porphyry- and epithermal-Cu-Au mineralisation in the Aegean using zircon geochro

使用锆石地色仪研究与爱琴海斑岩和浅成热液铜金矿化相关的俯冲和俯冲后岩浆活动的丰度

• 批准号: 2506281
• 金额: --
• 依托单位: University of Leicester
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2506281
• 关键词: Fertility; subduction; post; magmatism; associated

The UK has passed legislation to reach net zero greenhouse gas emissions by 2050. This will require new geological resources to underpin non fossil fuel transport and energy generation. Porphyry copper deposits are the world's major source of copper - a key raw material in electric motors and dynamos. They are also notable, in certain geodynamic environments, for their enrichment in a wide range of trace elements and minerals, including "critical" elements, such as Te, Pt, Pd, Bi and Sb, used in clean energy generation. Hence, in the drive for "net zero", there will be a requirement for new porphyry-copper resources and consequently a better understanding of the key processes that result in their formation and the locations where they can be found is required.Accessory minerals (e.g. zircon and apatite) and magma geochemistry coupled with high precision U-Pb geochronology on zircon are the focus of significant current research effort as they have the potential to distinguish fertile from barren porphyry copper systems [e.g. 1] with the aims of developing a new understanding of the magmatic and petrogenetic processes responsible for porphyry copper formation and to provide new tools for their exploration. To date, the emphasis has been on the Andes - a subduction setting. However, post-subduction magmatism is a common phenomenon and is increasingly recognised as an important control on the formation of exceptional porphyry-epithermal style ore deposits and are, as noted above, an important source of technology elementsThe Aegean is a region that has a complex, but reasonably well understood geodynamic and magmatic history over the last 33 Ma, that is predominantly post-subduction in style but also involves active, albeit slow, subduction. It also has well-developed porphyry and epithermal style mineralisation developed coevally with this geodynamic and magmatic evolution, which together provide a robust template for developing accessory mineral porphyry-copper fertility indicators in a post-subduction setting.

英国已通过立法，到2050年实现温室气体净零排放。这将需要新的地质资源来支持非化石燃料运输和能源生产。斑岩铜矿是世界上铜的主要来源，而铜是制造电动机和发电机的关键原料。在某些地球动力学环境中，它们还因富含各种微量元素和矿物质而引人注目，包括用于清洁能源生产的“关键”元素，如Te、Pt、Pd、Bi和Sb。因此，在推动“净零”的过程中，将需要新的斑岩铜资源，因此需要更好地了解导致其形成的关键过程以及可以找到它们的位置。辅助矿物（如锆石和磷灰石）和岩浆地球化学以及锆石高精度U-Pb年代学是当前重要的研究重点，因为它们有可能区分肥沃和贫瘠的斑岩铜系统[例如1]，目的是对斑岩铜形成的岩浆和岩石成因过程有新的认识，并为它们的勘探提供新的工具。迄今为止，研究的重点一直放在安第斯山脉——一个俯冲环境。然而，俯冲后岩浆活动是一种常见的现象，并且越来越被认为是对特殊斑岩-浅成热液型矿床形成的重要控制，并且如上所述，是技术元素的重要来源。爱琴海是一个具有复杂但相当好理解的过去33 Ma的地球动力学和岩浆历史的地区，主要是俯冲后风格，但也包括活跃的（尽管缓慢的）俯冲。与此地球动力学和岩浆演化同步发育的斑岩和浅成热液型成矿作用也十分发达，它们共同为俯冲后环境下斑岩-铜富性指标的发展提供了强有力的模板。