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首页> 外文会议>Biennial SGA meeting >The porphyry to epithermal transition in a magmatic-hydrothermal system: Valea Morii copper-gold deposit, Apuseni Mts, Romania
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The porphyry to epithermal transition in a magmatic-hydrothermal system: Valea Morii copper-gold deposit, Apuseni Mts, Romania

机译：岩浆加热系统中曲线过渡的斑岩过渡：Valea Morii铜金矿床，Apuseni MTS，罗马尼亚

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Porphyry Cu-Au mineralisation with associated potassic and phyllic alteration and low-sulphidation epithermal quartz-sulphide-gold-carbonate veins, are telescoped within a vertical interval of >400 m in the Valea Morii deposit, Romania. The deposit is located in the eastern part of the Barza magmatic structure ― the richest gold-bearing magmatic-hydrothermal system of the South Apuseni Mountains Miocene metallogenic district. It consists of a steeply dipping intrusion of quartz diorite crosscut by a younger quartz microdiorite subvolcanic body. The field observations and time relationships between the porphyry and epithermal styles of mineralisation and host rocks in both intrusions give evidence for successive development of alternating porphyry-style veining and igneous breccias, followed by several porphyry and epithermal stage hydrothermal breccias. Detailed petrographic study allowed reconstruction of the complex scenario of magmatic and hydrothermal events. EMP and LA-ICPMS analyses of magmatic and hydrothermal minerals, iso-topic magmatic geochemistry and tracing, and microthermometric together with LA-ICPMS analyses of fluid and melt inclusions, are currently in progress in order to constrain the chemical, spatial and temporal evolution of the magmatic-hydrothermal system in Valea Morii and to trace the porphyry to epithermal transition.
机译：斑岩Cu-Au矿化与相关的母菌和文学改变和低硫化术术术术，在Valea Morii沉积物，罗马尼亚的垂直间隔内伸到垂直间隔内> 400米。该矿床位于Barza Magmatic结构的东部 - 最富有的核心岩浆 - 水热系统南杏山Miocene Metallengic区。它由较年轻的石英微直岩亚氰体陡峭地倾斜石英思科的侵入性。两种侵入中斑岩和膜状曲线曲线曲线曲线曲线曲线曲线曲线曲线的田间观测和时间关系提供了交替开发交替的斑岩式淋图和火斑块的表现，其次是几个斑岩和卵形阶段的水热带脆菌。详细的岩体研究允许重建岩浆和水热事件的复杂情景。目前正在进行岩浆和水热矿物质，ISO-主题岩浆地球化学和追踪，以及与La-ICPMS分析的诸如La-ICPMS分析的岩浆和水热矿物质的分析，并进行了微米，以限制化学，空间和时间演变Valea Morii的岩浆水热系统，并追踪斑岩到爬骨过渡。

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