Mineralisation of the Brothers Volcano, Kermadec Arc (IODP Expedition 376)

克马德克弧兄弟火山的矿化（IODP 探险队 376）

• 批准号: NE/S006214/1
• 负责人: Christopher MacLeod
• 金额: $ 3.19万
• 依托单位: CARDIFF UNIVERSITY
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FS006214%2F1
• 关键词: Mineralisation; Brothers; Volcano; Kermadec; Arc

We here request funds to support the post-cruise Moratorium science programme of Cardiff PhD student Andrew Martin, who has been selected as a UK participant on International Ocean Discovery Program (IODP) Expedition 376 'Brothers Arc Flux' (5th May to 5th July 2018). Expedition 376 aims to investigate the fundamental processes that govern sub-seafloor hydrothermal mineralisation in submarine volcanoes by conducting a scientific drilling campaign at the Brothers Volcano, Kermadec Arc, SW Pacific. By drilling a series of scientific boreholes into the summit of the underwater volcano Expedition 376 scientists aim to: (1) characterise the transport of volatiles from the magmatic to hydrothermal system, and test whether a single-phase gas or two-phase brine-vapour system exists; (2) investigate the distribution of trace and base metals and establish the physico-chemical conditions that lead to their enrichment; (3) quantify the extent of fluid-rock interaction and establish the importance of magma-derived sulphur and carbon species in metal transport; and (4) assess the diversity and extent of microbial life in the system.Andrew's role on board will be as a member of the Alteration Mineralogy team. He will play an integral role in characterising and logging the alteration facies associated with the Brothers hydrothermal system. For his post-cruise science programme in Cardiff, which has been approved by the Expedition 376 Sample Allocation Committee, he has committed to generating a comprehensive set of major and trace element analyses of representative whole-rock and in situ mineral samples of sulphide and silicate materials, focusing in particular on characterising their base, trace and precious metal concentrations and distributions. Cardiff's ELEMENT laboratory, under the leadership of Co-I Dr Iain McDonald, is a world leader in the analysis of such materials, by both solution and laser-ablation mass spectrometric techniques. The analyses Andrew will generate should play a vital role in helping to achieve objectives 2 and 3 of the wider Expedition 376 goals.Andrew's selection for Expedition 376 was in recognition of his growing expertise in understanding how critical and precious elements in sulphides are transferred from the magmatic to hydrothermal environment. This process (with particular emphasis on Te and Se) forms the subject of his PhD, which focuses on the ancient analogue of the Troodos ophiolite of Cyprus. Though clearly of broad relevance to the subject of his PhD, the Expedition 376 research is not likely to form part of it; hence, on the basis of the guidance we have received, we are seeking 3 months of stipend for Andrew, over and above the analytical costs, to allow him to meet his IODP responsibilities without jeopardising his PhD research programme.

我们在此请求资金支持卡迪夫博士生安德鲁·马丁（Andrew Martin）的巡航后暂停科学计划，他已被选为国际海洋发现计划（IODP）第376号探险队“Brothers Arc Flux”（2018年5月5日至7月5日）的英国参与者。第376次考察旨在通过在西南太平洋克马德克弧兄弟火山进行科学钻探活动，调查海底火山海底热液矿化的基本过程。科学家们在水下火山“远征376”山顶钻了一系列科学钻孔，目的是：（1）查明挥发物从岩浆系统向热液系统的迁移情况，并测试是否存在单相气体或两相盐水-蒸汽系统;（2）调查微量金属和贱金属的分布情况，并确定导致其富集的物理化学条件;（3）量化流体-岩石相互作用的程度，并确定岩浆衍生的硫和碳物种在金属迁移中的重要性;（4）评估系统中微生物生命的多样性和程度。Andrew在船上的角色将是蚀变矿物学团队的成员。他将在描述和记录与兄弟热液系统相关的蚀变相方面发挥不可或缺的作用。他在卡迪夫的考察后科学方案已得到376号考察队样本分配委员会的批准，他致力于对硫化物和硅酸盐材料的代表性全岩和原地矿物样本进行一整套主要元素和微量元素分析，特别侧重于确定其碱金属、微量金属和贵金属的浓度和分布。卡迪夫的ELEMENT实验室在Co-I Iain McDonald博士的领导下，是通过溶液和激光烧蚀质谱技术分析此类材料的世界领先者。安德鲁将生成的分析将在帮助实现更广泛的376号考察队目标中的目标2和目标3方面发挥至关重要的作用。安德鲁被选中参加376号考察队是因为他在了解硫化物中的关键和宝贵元素如何从岩浆环境转移到热液环境方面的专业知识不断增长。这一过程（特别强调Te和Se）构成了他博士学位的主题，重点是塞浦路斯特罗多斯蛇绿岩的古代类似物。虽然显然与他的博士学位主题具有广泛的相关性，但远征376研究不太可能成为其中的一部分;因此，根据我们收到的指导，我们正在为安德鲁寻求3个月的津贴，超过分析成本，以使他能够履行他的IODP职责，而不会危及他的博士研究计划。

项目成果

Effects of magmatic volatile influx in mafic VMS hydrothermal systems: Evidence from the Troodos ophiolite, Cyprus

• DOI: 10.1016/j.chemgeo.2019.119325
• 发表时间: 2020-01
• 期刊: Chemical Geology
• 影响因子: 3.9
• 作者: Andrew J. Martin;M. Keith;Daniel B. Parvaz;I. McDonald;A. Boyce;K. McFall;Gawen R. T. Jenkin;H. Strauss;C. MacLeod

Trace metal and sulfur cycling in a hydrothermally active arc volcano: deep-sea drilling of the Brothers volcano, Kermadec arc, New Zealand

热液活跃弧火山中的痕量金属和硫循环：新西兰克马德克弧兄弟火山的深海钻探

• DOI: 10.1007/s00126-022-01135-x
• 发表时间: 2022
• 期刊: Mineralium Deposita
• 影响因子: 4.8
• 作者: Martin A

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

Mineral-scale variation in the trace metal and sulfur isotope composition of pyrite: implications for metal and sulfur sources in mafic VMS deposits

黄铁矿痕量金属和硫同位素组成的矿物尺度变化：对镁铁质 VMS 矿床金属和硫源的影响

• DOI: 10.1007/s00126-021-01080-1
• 发表时间: 2021
• 期刊: Mineralium Deposita
• 影响因子: 4.8
• 作者: Martin A