A profile of multiple sulfur, oxygen, strontium isotopes and related chalcophile elements through lower slow-spreading crust (IODP Expedition 360, Atlantis Bank, Southwest Indian Ridge)
低速扩张地壳中多种硫、氧、锶同位素和相关亲铜元素的分布图(IODP Expedition 360,亚特兰蒂斯浅滩,西南印度洋中脊)
基本信息
- 批准号:319774021
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:德国
- 项目类别:Infrastructure Priority Programmes
- 财政年份:2016
- 资助国家:德国
- 起止时间:2015-12-31 至 2019-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
IODP Expedition 360 to Atlantis Bank, at Southwest Indian Ridge (SWIR), ended at 30.01.2016, and is Leg 1 of the SloMo Project, a Multi Phase Drilling Program to drill through the crust/mantle boundary at a slow spreading ocean ridge. The primary objective of the SloMo Project is to test competing hypotheses on the nature of the Moho at the slow spreading oceanic lithosphere. Expedition 360 Hole U1473A was drilled 789.7 m through massive olivine gabbro, gabbro, Fe Ti rich oxide gabbro, gabbronorite, cut by numerous felsic veins. Numerous long intervals of porphyroclastic to ultramylonitic, gabbro, representing a 600 meter thick shear zone, demonstrate that this occurred in a dynamic environment, beginning while the gabbros were partially molten, and continuing as they cooled and were emplaced diapirically and tectonically upward into the zone of diking beneath the rift valley floor. With the help of the Hole U1473U core drilled during Expedition 360, we aim at quantifying the cycling of sulfur and related chalcophile elements in typical slow spreading oceanic crust. The analytical approach will include measuring of multiple sulfur isotopes and trace elements mostly in gabbros and felsic rocks from the drilled core, supported by a few samples from the extrusive crust and from mantle rocks from that area, recovered conventionally by other ship cruises. Downhole concentration profiles of sulfur and chalcophile elements will enable us to identify the main trends of their enrichment and depletion. Multiple sulfur isotopes, in combination with silicate oxygen isotopes and bulk rock Sr isotopes will help to identify whether sulfides observed in various paragenetic mineral assemblages have been formed by primary magmatic or secondary processes, i.e. by seawater derived fluids resulting in water rock interaction. Optical and reflected light microscopy as well as in situ analysis with electron microprobe (EMPA), and laser ablation inductively coupled plasma mass spectrometry (LA ICPMS) will reveal fundamental understanding of the characteristics of related processes involving sulfur mineral formation in the deep slow spreading oceanic crust.
IODP Expedition 360到西南印度山脊(SWIR)的亚特兰蒂斯银行(Atlantis Bank),于2016年1月30日结束,是Slomo Project的腿1,这是一项多相钻探计划,可在慢慢传播的海洋岭以钻探地壳/地幔边界进行钻探。 Slomo项目的主要目的是在缓慢扩散的海洋岩石圈中测试有关Moho性质的竞争假设。 Expedition 360孔U1473A通过巨大的橄榄石Gabbro,Gabbro,Fe Ti富含氧化物Gabbro,Gabbronorite钻789.7 m,由许多长石脉切割。代表一个600米厚的剪切区的卟啉碎屑到超大基质的长时间间隔,表明这发生在动态环境中,始于gabbros在gabbros被部分熔化的同时,随着它们冷却,并在静脉下并在静脉下,并在底部上向上扩展到Rift Valley Floel Floes的堤防区域。借助Expedition 360期间钻孔的孔U1473U核心,我们旨在量化典型的慢速扩散海洋壳中硫和相关辣椒元素的循环。分析方法将包括测量多个硫同位素和痕量元素,主要是在钻孔芯中的Gabbros和Felsic Rock中测量的,并由来自该区域的挤压壳和从地幔岩石中的几个样品支撑,并由其他船上巡游恢复。硫和果酱元素的下热浓度谱将使我们能够确定其富集和耗竭的主要趋势。多种硫同位素与硅酸盐氧同位素结合使用,而大块岩石SR同位素将有助于确定是否在各种型胶原矿物组合物中观察到的硫化物是否是由原发性岩浆或次要过程形成的,即,通过在水岩互动中导致的海水衍生的流体。光学显微镜和反射光学显微镜以及用电子显微探针(EMPA)和激光消融电感耦合等离子体质谱法(LA ICPM)的原位分析将揭示对涉及涉及深度慢层慢层硫磺硫形成的相关过程特征的基本了解。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
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Professor Dr. Jürgen Koepke其他文献
Professor Dr. Jürgen Koepke的其他文献
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{{ truncateString('Professor Dr. Jürgen Koepke', 18)}}的其他基金
Understanding felsic veins in gabbros drilled by IODP at Atlantis Bank (Southwest Indian Ridge): Formation, metamorphism, and their role as multifunctional pathways for fluid and mass transfer
了解 IODP 在亚特兰蒂斯浅滩(西南印度洋中脊)钻探的辉长岩中的长英质脉:形成、变质作用及其作为流体和质量传递多功能途径的作用
- 批准号:
408055224 - 财政年份:2018
- 资助金额:
-- - 项目类别:
Infrastructure Priority Programmes
Melt/rock interaction and fractional crystallization in the lower crust at Hess Deep Rift, East Pacific Rise: A combined analytical and experimental study
东太平洋海隆赫斯深裂谷下地壳熔体/岩石相互作用和分异结晶:分析与实验相结合的研究
- 批准号:
279047586 - 财政年份:2015
- 资助金额:
-- - 项目类别:
Infrastructure Priority Programmes
Silicate liquid immiscibility and the formation of Fe (±Ti ±P ±F ±REE) ore deposits
硅酸盐液体不混溶性与Fe(±Ti±P±F±REE)矿床的形成
- 批准号:
268008671 - 财政年份:2015
- 资助金额:
-- - 项目类别:
Research Grants
Assimilation, contamination and felsic melt generation at the top of the axial melt lens at fast-spreading oceanic crust: Combined geochemical and experimental investigations at the dike/gabbro transition from IODP Site 1256 (East Pacific Rise)
快速扩张的洋壳轴向熔体透镜体顶部的同化、污染和长英质熔体生成:对 IODP 站点 1256(东太平洋海隆)的岩脉/辉长岩转变进行地球化学和实验联合研究
- 批准号:
224563012 - 财政年份:2012
- 资助金额:
-- - 项目类别:
Infrastructure Priority Programmes
The Gabbro/Dike transition in oceanic crust generated at slow- and ultraslow-spreading ocean ridge systems
慢速和超慢速扩张的洋脊系统产生的洋壳中的辉长岩/岩脉转变
- 批准号:
227716517 - 财政年份:2012
- 资助金额:
-- - 项目类别:
Research Grants
Additional pre-survey for the project "Establishing a reference profile for fast-spreading oceanic crust: Petrology and geochemistry of the Wadi Gideah cross section in the Oman ophiolite"
“为快速扩张的洋壳建立参考剖面:阿曼蛇绿岩中 Wadi Gideah 横截面的岩石学和地球化学”项目的额外预调查
- 批准号:
214445455 - 财政年份:2011
- 资助金额:
-- - 项目类别:
Infrastructure Priority Programmes
Pre-survey: Magmatic evolution of the Tiger gabbroic complex (Northern Victoria Land, Antarctica): insights into the lower crust of a Cambrian immature Island Arc
预调查:虎辉长岩杂岩体的岩浆演化(南极洲北维多利亚地):深入了解寒武纪未成熟岛弧的下地壳
- 批准号:
130419963 - 财政年份:2009
- 资助金额:
-- - 项目类别:
Infrastructure Priority Programmes
Time scales for vertically moving axial magma chambers at fast-spreading ocean ridges and involved magmatic reactions: Insights from IODP Site 1256
快速扩张的洋脊上垂直移动的轴向岩浆室的时间尺度以及涉及的岩浆反应:来自 IODP Site 1256 的见解
- 批准号:
143034347 - 财政年份:2009
- 资助金额:
-- - 项目类别:
Infrastructure Priority Programmes
High temperature hydrothermal activity in the deep oceanic crust: Experiments and investigations on natural rocks in the Oman ophiolite
深洋地壳的高温热液活动:阿曼蛇绿岩天然岩石的实验和研究
- 批准号:
116858737 - 财政年份:2009
- 资助金额:
-- - 项目类别:
Research Grants
A combined petrological, geochemical and geochronological study of the magmatic rocks surrounding the Logatchev hydrothermal field.
对洛加切夫热液田周围岩浆岩进行岩石学、地球化学和地质年代学的综合研究。
- 批准号:
54904092 - 财政年份:2007
- 资助金额:
-- - 项目类别:
Priority Programmes
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