Investigating the geochemical and physical response to fluid rock reaction beneath an active hydrothermal system in an arc environment.

研究弧环境中活跃热液系统下流体岩石反应的地球化学和物理响应。

• 批准号: NE/S006303/1
• 负责人: Stephen Roberts
• 金额: $ 4.84万
• 依托单位: University of Southampton
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2018
• 资助国家: 英国
• 起止时间: 2018 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FS006303%2F1
• 关键词: Investigating; geochemical; physical; response; fluid

What goes on beneath active and extinct hydrothernal vent sites forming within the caldera of a submarine volcano? Establishing the processes active beneath the vent sites is crucial to our understanding of how these vent systems work. Moreover, such systems effectively represent a natural laboratories, which provide insights into the processes widely considered to be responsible for massive sulphide, copper, lead, zinc and gold, mineral resources we find, and presently exploit, from within the geological record. The Brothers volcano is of particular interest, as submarine arc volcanoes differ substantially from those in mid-ocean spreading environments in that they commonly contain a large component of fluid, likley to have derived from the magma chamber below. These magmatic fluids generate contrasting fluid rock reactions which influence the composition and the ore mineral forming potential of the hydrothermal fluids. In addition, these fluids are anticipated to alter the surrounding rocks in a manner not encountered in other environments and which may prove to be distinct signatures that can utimately aid exploration for resources in both submarine and terrestrial environments.

在海底火山的破火山口内形成的活跃和灭绝的热液喷口下面发生了什么？建立通风口下方的活动过程对于我们了解这些通风系统的工作原理至关重要。此外，这样的系统实际上代表了一个自然实验室，它提供了对被广泛认为是造成大量硫化物、铜、铅、锌和金这些我们在地质记录中发现和目前开采的矿产资源的过程的见解。兄弟火山特别令人感兴趣，因为海底弧火山与大洋中部扩散环境中的火山有很大不同，因为它们通常含有大量流体，很可能来自下面的岩浆室。这些岩浆流体产生对比鲜明的流体岩石反应，影响热液流体的成分和矿石矿物形成潜力。此外，预计这些流体会以其他环境中未遇到的方式改变周围的岩石，这可能被证明是最终有助于海底和陆地环境中资源勘探的独特特征。

项目成果

Hydrothermal Alteration Within the Brothers Submarine Arc Volcano, Kermadec Arc, New Zealand

新西兰克马德克弧兄弟海底弧火山内的热液蚀变

• DOI: 10.5382/econgeo.4962
• 发表时间: 2023
• 期刊: Economic Geology
• 影响因子: 5.8
• 作者: Martin A

Critical role of caldera collapse in the formation of seafloor mineralization: The case of Brothers volcano

• DOI: 10.1130/g46047.1
• 发表时间: 2019-08-01
• 期刊: GEOLOGY
• 影响因子: 5.8
• 作者: de Ronde, Cornel E. J.;Humphris, Susan E.;Reyes, Agnes G.
• 通讯作者: Reyes, Agnes G.