UK-IODP Moratorium Co-Chief Support for Expedition 393: Quantifying the geochemical impacts of ocean crustal ageing.

UK-IODP 暂停第 393 次探险联合首席支持:量化海洋地壳老化的地球化学影响。

基本信息

  • 批准号:
    NE/X009440/1
  • 负责人:
  • 金额:
    $ 11.49万
  • 依托单位:
  • 依托单位国家:
    英国
  • 项目类别:
    Research Grant
  • 财政年份:
    2022
  • 资助国家:
    英国
  • 起止时间:
    2022 至 无数据
  • 项目状态:
    未结题

项目摘要

The mid-ocean ridges are a range of submarine ridge that spiral around Earth like the seams on a baseball. This is where new ocean crust is constructed from magma formed from the partial melting of the upper mantle that then upwells to be intruded into and erupted onto the ocean floor. More that 3 square kilometres of ocean crust are formed each year. On average the ocean crust is approximately 6.5 +/- 1 km thick, and consequently more than 20 cubic kilometres of magma moves from the mantle to make new crust every year, making this process the dominant mechanism for heat and mass transfer from the interior of the Earth to the surface of our planet. Geophysical surveys demonstrate that the ocean crust is completely solidified within a kilometre or so of the spreading ridge. The cooling and crystallisation of these magmas is facilitated by the circulation of seawater-derived "black-smoker" hydrothermal fluids (upto 400 degrees C) that vent on the seafloor at spectacular black smoker chimneys, form volcanic-hosted massive sulphide base metal deposits (Cu, Zn), and provide energy and environments for diverse communities of exotic chemosynthetic organisms and microbes. As the ocean crust spreads away from the ridge axis further reactions with seawater-derived fluids occur on the vast ridge flanks that cover more than 60 percent of the surface of our planet. This circulation is driven by the cooling of the new plate-the lithosphere-as it matures away from the ridge. Seafloor measurements indicate that compared to models on average there is a discernible conductive heat flow deficit out to crust of ~65 million years, indicating the advection of heat by the circulation of hydrothermal fluids. However, in contrast to the high temperature systems at the ridge axis, hydrothermal circulation on the ridge flanks occurs at low temperatures generally much less than 100 degrees and generally at only a few tens of degrees or lower. This leads to the alteration of volcanic rocks and the precipitation of secondary minerals such as clays, iron oxides, carbonates, sulphides and zeolites. Because of their vast scale, these ridge flank reactions involve huge volumes of seawater-derived hydrothermal fluids and are important components in the global geochemical budgets of important elements and compounds such as U, K, CO2, H2O, S, Mg, Ca and Fe3+/Fetotal (oxidation). Most of these reactions occur in the volcanic lava flows of the uppermost crust. Integrated Ocean Discovery Program (IODP) Expedition 390/393 are the first experiment to systematically quantify the evolving styles and extents of seawater-basalt hydrothermal exchange across the flank of a mid-ocean ridge. Importantly it will drill sites with normal thickness sediment cover in contrast to earlier ocean drilling that has tended to sample sites with anomalously thick sediment cover. It will drill through the sedimentary overburden and sample 200 to 300 metres of the lava sequences in ocean crust of 6.6, 15.2, 30.6, 49.2 and 61.2 million years old on the western flank of the slow to medium spreading rate Mid-Atlantic Ridge across an east-west transect at approximately 30 deg South. At the oldest 61.2 million-year-old crust IODP Expedition 390/393 will drill two sites - one with only a thin sediment cover (<300 m) to contrast and compare with ocean crust of the same age that has been buried by a much thicker sediment cover (~600 m).Careful quantitative core description, mineral identification and geochemical analyses of fresh, little altered ocean basalt and representative samples of more strongly altered rocks and minerals from lava flows, breccias and veins will enable us to understand the evolving styles of hydrothermal fluid-rock reactions and quantify the progressive extents of chemical exchange between seawater and the ocean crust. These analyses will also reveal information about changes in the composition of ocean bottom waters over the past 60 million years.
大洋中脊是一系列海底脊,它们像棒球上的接缝一样围绕地球盘旋。这是新的海洋地壳是由上地幔部分熔融形成的岩浆构成的,然后上升侵入并喷发到海底。每年形成3平方公里以上的洋壳。平均而言,洋壳厚度约为6.5 +/- 1公里,因此每年有20立方公里以上的岩浆从地幔移动形成新的地壳,使这一过程成为热量和质量从地球内部转移到地球表面的主要机制。地球物理测量表明,在扩张脊一公里左右的范围内,洋壳完全凝固。这些岩浆的冷却和结晶是由海水衍生的“黑烟”热液(高达400摄氏度)的循环促进的,这些热液在壮观的黑烟烟囱中排放到海底,形成火山托管的块状硫化物贱金属矿床(铜,锌),并为外来化学合成生物和微生物的各种社区提供能量和环境。随着洋壳远离海脊轴,与海水衍生流体的进一步反应发生在覆盖地球表面60%以上的巨大海脊侧翼。这种环流是由新板块-岩石圈-的冷却所驱动的,因为它远离海岭而成熟。海底测量结果表明,与平均模型相比,可辨别的传导热流不足到地壳约6 500万年,表明热液循环造成热量平流。然而,与海脊轴线的高温系统相反,海脊侧翼的热液循环发生在通常远低于100度的低温下,通常只有几十度或更低。这导致火山岩的蚀变和次生矿物如粘土、氧化铁、碳酸盐、硫化物和沸石的沉淀。由于其规模巨大,这些脊翼反应涉及大量的海水热液流体,是全球重要元素和化合物(如U、K、CO2、H2O、S、Mg、Ca和Fe 3 +/Fetotal(氧化))地球化学收支的重要组成部分。这些反应大多发生在地壳最上层的火山熔岩流中。综合海洋发现计划(IODP)远征390/393是第一个实验,系统地量化了不断变化的风格和范围的海水玄武岩热液交换横跨一个洋中脊的侧翼。重要的是,它将钻探具有正常厚度沉积物覆盖的地点,这与早期的海洋钻探相反,早期的海洋钻探倾向于对具有异常厚沉积物覆盖的地点进行取样。它将钻穿沉积覆盖层,并在南纬约30度的东西向断面上,在缓慢至中等扩张速度的中大西洋海岭西侧,对660万、1520万、3060万、4920万和6120万年前的洋壳中的200至300米熔岩序列进行取样。在最古老的6120万年前的地壳上,IODP第390/393号考察队将钻探两个地点--一个只有薄的沉积物覆盖层(<300米),以与被厚得多的沉积物覆盖层(~600米)掩埋的同龄海洋地壳进行对比和比较。蚀变程度较低的大洋玄武岩以及来自熔岩流、角砾岩和矿脉的蚀变程度较强的岩石和矿物的代表性样品,将使我们能够了解热液-岩石反应的演变方式,并量化海水与洋壳之间化学交换的渐进程度。这些分析还将揭示过去6 000万年来海底沃茨成分变化的信息。

项目成果

期刊论文数量(10)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
South Atlantic Transect
南大西洋横断面
Expedition 390 Preliminary Report: South Atlantic Transect 1
  • DOI:
    10.14379/iodp.pr.390.2022
  • 发表时间:
    2022-10
  • 期刊:
  • 影响因子:
    0
  • 作者:
    R. Coggon;J. Sylvan;D. Teagle;J. Reece;G. Christeson;E. Estes;T. Williams
  • 通讯作者:
    R. Coggon;J. Sylvan;D. Teagle;J. Reece;G. Christeson;E. Estes;T. Williams
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Damon Teagle其他文献

Strength profile at the CM sites, ICDP Oman Drilling Project
ICDP 阿曼钻探项目 CM 现场的强度概况
  • DOI:
  • 发表时间:
    2018
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Yasuhiro Yamada;Moe Kyaw;Adam Wspaniary;Natsue Abe;Katsuyoshi Michibayashi;Eiichi Takazawa;Juerg Matter;Damon Teagle;Peter Kelemen;The Oman Drilling Project Phase 2 Science Party
  • 通讯作者:
    The Oman Drilling Project Phase 2 Science Party
Physical property of the fossilized crust-mantle transition zone from ICDP Oman Drilling Project Hole CM1A and CM2B measured onboard D/V Chikyu
在 D/V Chikyu 船上测量的 ICDP 阿曼钻探项目 CM1A 和 CM2B 孔化石壳幔过渡带的物理性质
  • DOI:
  • 发表时间:
    2019
  • 期刊:
  • 影响因子:
    0
  • 作者:
    岡崎 啓史;阿部 なつ江;畠山 航平;赤松 祐哉;片山 郁夫;高澤 栄一;Damon Teagle;Peter Kelemen;Jude Coggon;Oman Drilling Prj Ph2 Sci. Party
  • 通讯作者:
    Oman Drilling Prj Ph2 Sci. Party
分子雲での光化学反応による有機物の生成と原始惑星系円盤における進化
分子云中光化学反应产生有机物和原行星盘演化
  • DOI:
  • 发表时间:
    2017
  • 期刊:
  • 影响因子:
    0
  • 作者:
    川本 竜彦;佐藤 宏樹;髙橋 藤馬;Juan Miguel Guotana;森下 知晃;Peter Kelemen;Jude Coggon;Michelle Harris;Juerg Matter;道林 克禎;高澤 栄一;Damon Teagle;The Oman Drilling Project Phase 1 Science Party;香内晃
  • 通讯作者:
    香内晃
Oman Drilling Project Phase 1 のリストヴェナイト中のドロマイト脈に薄い塩水からなる流体包有物があるぜよ
阿曼钻探项目一期的listvenite白云岩脉中存在由稀盐水构成的流体包裹体。
  • DOI:
  • 发表时间:
    2019
  • 期刊:
  • 影响因子:
    0
  • 作者:
    川本 竜彦;佐藤 宏樹;髙橋 藤馬;Juan Miguel Guotana;森下 知晃;Peter Kelemen;Jude Coggon;Michelle Harris;Juerg Matter;道林 克禎;高澤 栄一;Damon Teagle;The Oman Drilling Project Phase 1 Science Party
  • 通讯作者:
    The Oman Drilling Project Phase 1 Science Party
オマーンに産するリストベナイトの岩石学: 沈み込み帯の炭素循環の解明に向けて
阿曼利斯特韦尼特的岩石学:阐明俯冲带的碳循环
  • DOI:
  • 发表时间:
    2019
  • 期刊:
  • 影响因子:
    0
  • 作者:
    髙橋 藤馬;森下 知晃;佐藤 宏樹; Guotana Juan;川本 竜彦;Peter Kelemen;Jude Coggon;Michelle Harris;Juerg Matter;道林 克禎;高澤 栄一;Damon Teagle;The Oman Drilling Project Phase 1 science Party
  • 通讯作者:
    The Oman Drilling Project Phase 1 science Party

Damon Teagle的其他文献

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{{ truncateString('Damon Teagle', 18)}}的其他基金

Developing continuous volcano-stratigraphies across the South Atlantic Transect: NERC UK-IODP Moratorium support for Aled Evans - IODP Expedition 393
开发横跨南大西洋横断面的连续火山地层:NERC UK-IODP 暂停支持 Aled Evans - IODP Expedition 393
  • 批准号:
    NE/X00631X/1
  • 财政年份:
    2022
  • 资助金额:
    $ 11.49万
  • 项目类别:
    Research Grant
UK-IODP Moratorium Award for Lewis Grant - Shipboard Scientist Expedition 390: The role of ridge flank dolomitization in the ocean Mg budget
英国 IODP 暂停奖授予 Lewis Grant - 船上科学家第 390 次探险:山脊侧翼白云石化在海洋镁预算中的作用
  • 批准号:
    NE/X002446/1
  • 财政年份:
    2022
  • 资助金额:
    $ 11.49万
  • 项目类别:
    Research Grant
Timescales of South Atlantic ridge flank hydrothermal exchange; UK-IODP Moratorium Award for Thomas Belgrano - Shipboard Scientist, Expedition 393.
南大西洋洋脊侧翼热液交换的时间尺度;
  • 批准号:
    NE/X003485/1
  • 财政年份:
    2022
  • 资助金额:
    $ 11.49万
  • 项目类别:
    Research Grant
NSFGEO-NERC: Data Mining the Deep: Combining Geochemistry and Imaging Spectroscopy to Quantify Deep Hydrothermal Circulation at Mid-Ocean Ridges
NSFGEO-NERC:深海数据挖掘:结合地球化学和成像光谱学来量化大洋中脊的深部热液循环
  • 批准号:
    NE/W007517/1
  • 财政年份:
    2021
  • 资助金额:
    $ 11.49万
  • 项目类别:
    Research Grant
Engaging UK Communities in Scientific Ocean Drilling: A proposal for Knowledge Exchange and Coordination for UK IODP
让英国社区参与科学海洋钻探:英国 IODP 知识交流和协调提案
  • 批准号:
    NE/T009527/1
  • 财政年份:
    2019
  • 资助金额:
    $ 11.49万
  • 项目类别:
    Research Grant
Characterising devolatilisation beneath the Mariana Forearc
马里亚纳前弧下方的挥发分蒸发特征
  • 批准号:
    NE/P020909/1
  • 财政年份:
    2016
  • 资助金额:
    $ 11.49万
  • 项目类别:
    Research Grant
Accretion of the lower oceanic crust: Reconciling evidence of hydrothermal fluid fluxes with mineral cooling rates from ODP Hole 1256D, IODP Exp335
下洋壳的增生:ODP 孔 1256D、IODP Exp335 的热液流体通量与矿物冷却速率的证据相一致
  • 批准号:
    NE/L000059/1
  • 财政年份:
    2014
  • 资助金额:
    $ 11.49万
  • 项目类别:
    Research Grant
IODP Phase 1 post cruise support for C Smith-Duque Expedition 344
IODP 第 1 阶段为 C Smith-Duque Expedition 344 提供巡航后支持
  • 批准号:
    NE/L014351/1
  • 财政年份:
    2014
  • 资助金额:
    $ 11.49万
  • 项目类别:
    Research Grant
The timing and nature of inorganic calcium carbonate precipitation within exposed basalt from the South Pacific Gyre, IODP Expedition 329.
南太平洋环流暴露的玄武岩中无机碳酸钙沉淀的时间和性质,IODP 第 329 次探险。
  • 批准号:
    NE/L000024/1
  • 财政年份:
    2013
  • 资助金额:
    $ 11.49万
  • 项目类别:
    Research Grant
Dating mineral formation during mid-ocean ridge flank hydrothermal circulation: Evidence from the Juan de Fuca Ridge, IODP Expedition 327
大洋中脊侧翼热液循环期间矿物形成的年代测定:来自胡安德富卡海脊的证据,IODP 327 号探险队
  • 批准号:
    NE/L000032/1
  • 财政年份:
    2013
  • 资助金额:
    $ 11.49万
  • 项目类别:
    Research Grant

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相似海外基金

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亚特兰蒂斯地块 IODP 399 号探险队反应孔隙度和渗透率研究
  • 批准号:
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洋壳最深处的元素和同位素相互作用 - 亚特兰蒂斯地块(IODP Expedition 399)
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Discriminating Deep Water Deposits for IODP Expedition 401: "Mediterranean-Atlantic Gateway Exchange" (Acronym: DISCRIMINATE)
IODP 401 号远征的深水沉积物识别:“地中海-大西洋门户交换”(缩写:DISCRIMINATE)
  • 批准号:
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  • 资助金额:
    $ 11.49万
  • 项目类别:
    Research Grant
Developing continuous volcano-stratigraphies across the South Atlantic Transect: NERC UK-IODP Moratorium support for Aled Evans - IODP Expedition 393
开发横跨南大西洋横断面的连续火山地层:NERC UK-IODP 暂停支持 Aled Evans - IODP Expedition 393
  • 批准号:
    NE/X00631X/1
  • 财政年份:
    2022
  • 资助金额:
    $ 11.49万
  • 项目类别:
    Research Grant
Carbon-climate perturbations in the Cretaceous-Paleogene Southern Ocean: Clues from IODP 392 Agulhas Plateau
白垩纪-古近纪南大洋的碳气候扰动:来自 IODP 392 厄加勒斯高原的线索
  • 批准号:
    NE/W00769X/1
  • 财政年份:
    2022
  • 资助金额:
    $ 11.49万
  • 项目类别:
    Research Grant
Building benchmark Pliocene-Pleistocene palaeomagnetic records using sediments cored during IODP Expedition 397 (Iberian Margin Palaeoclimate)
使用 IODP 探险 397 期间取芯的沉积物建立基准上新世-更新世古地磁记录(伊比利亚边缘古气候)
  • 批准号:
    NE/X016218/1
  • 财政年份:
    2022
  • 资助金额:
    $ 11.49万
  • 项目类别:
    Research Grant
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