Chlorine Isotope Geochemistry of Altered Oceanic Crust: Empirical and Experimental Observations

改变的洋壳的氯同位素地球化学:经验和实验观测

基本信息

  • 批准号:
    0946686
  • 负责人:
  • 金额:
    $ 24.89万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    2010
  • 资助国家:
    美国
  • 起止时间:
    2010-03-15 至 2014-02-28
  • 项目状态:
    已结题

项目摘要

Intellectual Merit. Because of its strong partitioning into aqueous fluids, Cl and its isotopes (37Cl and 35Cl) are potentially powerful tracers of volatile and fluid migration in the crust and subduction zones, as well as the interaction between oceanic lithosphere and seawater derived hydrothermal fluids. To advance the utility of these tracers knowledge of its distribution and isotopic fractionation within various reservoirs is required. Recent work has begun to define the d37Cl values of various global Cl reservoirs (sediments, pore fluids, serpentinites), but isotopic data is very limited for one of the largest reservoirs, altered oceanic crust (AOC). AOC hosts ~2.5-3 x 10^12 g of Cl subducted worldwide, yet only three d37Cl values are published. Also, calculations and laboratory experiments imply minor fractionation between Cl-bearing phases, so it is commonly assumed that Cl faithfully records the isotopic composition of the hydration source. However, theoretical calculations use partition function ratios for divalent chlorides as analogues for silicates and fractionation experiments are limited to coexisting vapor, liquid, and precipitated salts in the H2O-NaCl and HCl systems. To properly address isotopic fractionation in systems for which Cl is a fluid tracer, experiments are needed for the common Cl-bearing silicate minerals in AOC (e.g., hornblende, actinolite, chlorite). Such information will enable better assessment of isotopic fractionation during fluid-rock and fluid-melt interactions and aid in interpreting Cl isotope data in general. The proposed research includes [1] a survey of d37Cl values for altered basalt and gabbro samples from DSDP/ODP/IODP drill cores, and [2] experimental determination of Cl isotope fractionation factors between the aforementioned hydrous silicate minerals and aqueous chloride solutions (seawater and brine). These complementary efforts are needed to fingerprint chlorine sources and accurately interpret data from natural samples. Ultimately, Cl isotope data will be incorporated into mass balance calculations to better understand material recycling at subduction zones.Broader impacts. PI Barnes is a first year assistant professor at UT-Austin. This proposal will partially fund one Ph.D. and one M.S. student. The proposed research will provide a foundation as Barnes begins her faculty career and will be integrated into the development of her new stable isotope lab. Two undergraduates will be partnered with the graduate students involved in this project, resulting in two honors theses. Co-PI Gardner is an associate professor at UT-Austin and will serve as a mentor to the newly hired Barnes. Both PIs will oversee and mentor students with laboratory work and data interpretation.
知识价值。Cl及其同位素(37Cl和35Cl)是地壳和俯冲带挥发性和流体迁移的潜在强大示踪剂,也是海洋岩石圈与海水热液相互作用的示踪剂。为了提高这些示踪剂的实用性,需要了解其在各种储层中的分布和同位素分馏。最近的工作已经开始确定全球各种Cl储层(沉积物、孔隙流体、蛇纹岩)的d37Cl值,但对于最大的储层之一蚀变海洋地壳(AOC)的同位素数据非常有限。AOC含Cl约2.5 ~ 3 × 10^12 g,但仅公布了3个d37Cl值。此外,计算和实验室实验表明含Cl相之间存在较小的分馏,因此通常认为Cl忠实地记录了水化源的同位素组成。然而,理论计算使用二价氯化物的配分函数比作为硅酸盐的类似物,分馏实验仅限于在H2O-NaCl和HCl体系中共存的蒸汽、液体和沉淀盐。为了正确解决以Cl为流体示踪剂的体系中的同位素分馏问题,需要对AOC中常见的含Cl硅酸盐矿物(如角闪石、放光石、绿泥石)进行实验。这些信息将有助于更好地评估流体-岩石和流体-熔体相互作用期间的同位素分馏,并有助于解释一般的氯同位素数据。[1]对DSDP/ODP/IODP岩心蚀变玄武岩和辉长岩样品的d37Cl值进行了测量,[2]对上述含水硅酸盐矿物与氯水溶液(海水和卤水)之间的Cl同位素分馏因子进行了实验测定。需要这些互补的努力来确定氯源的指纹,并准确地解释来自自然样品的数据。最终,氯同位素数据将被纳入质量平衡计算,以更好地了解俯冲带的物质循环。更广泛的影响。PI Barnes是德州大学奥斯汀分校的一年级助理教授。该提案将部分资助一名博士和一名硕士学生。拟议的研究将为巴恩斯开始她的教师生涯提供基础,并将整合到她新的稳定同位素实验室的发展中。两名本科生将与研究生合作参与这个项目,产生两篇荣誉论文。合伙人加德纳是德克萨斯大学奥斯汀分校的副教授,他将作为新聘用的巴恩斯的导师。两位pi都将监督和指导学生进行实验室工作和数据解释。

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)
专利数量(0)

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ monograph.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ sciAawards.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ conferencePapers.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ patent.updateTime }}

Jaime Barnes其他文献

Abstract 16780: Disease Severity Assessed by Thromboelastography in a Minority Population With COVID-19
摘要 16780:通过血栓弹力图评估少数 COVID-19 人群的疾病严重程度
  • DOI:
    10.1161/circ.142.suppl_3.16780
  • 发表时间:
    2020
  • 期刊:
  • 影响因子:
    37.8
  • 作者:
    K. Bliden;A. Rout;R. Chaudhary;Jaime Barnes;U. Tantry;P. Gurbel
  • 通讯作者:
    P. Gurbel
Timing of Spontaneous Awakening and Breathing Trial Affects Duration of Mechanical Ventilation
  • DOI:
    10.1016/j.chest.2016.08.330
  • 发表时间:
    2016-10-01
  • 期刊:
  • 影响因子:
  • 作者:
    Galo Sanchez Palacios;Jennifer Quinn;Meredith Stein;Joseph Carrington;Kinjal Sheth;Paul Szczybor;Kate Curran;Jaime Barnes
  • 通讯作者:
    Jaime Barnes
A phonological expression for physical movement monitoring in body sensor networks
身体传感器网络中身体运动监测的语音表达
Assessing ICU Severity of Illness With Readily Available Administrative Data
  • DOI:
    10.1016/j.chest.2016.08.229
  • 发表时间:
    2016-10-01
  • 期刊:
  • 影响因子:
  • 作者:
    Joseph Carrington;Malini Fonseka Chandra Serharan;Galo Sanchez Palacios;Jaime Barnes
  • 通讯作者:
    Jaime Barnes

Jaime Barnes的其他文献

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

{{ truncateString('Jaime Barnes', 18)}}的其他基金

Collaborative Research: Halogen and chlorine isotope behavior during metamorphism of metapelitic rocks
合作研究:变质岩变质作用过程中的卤素和氯同位素行为
  • 批准号:
    2321368
  • 财政年份:
    2023
  • 资助金额:
    $ 24.89万
  • 项目类别:
    Standard Grant
Tracing Ancient Subduction in the Lithospheric Mantle via Traditional and Non-Traditional Stable Isotopes
通过传统和非传统稳定同位素追踪岩石圈地幔的古代俯冲作用
  • 批准号:
    2234385
  • 财政年份:
    2023
  • 资助金额:
    $ 24.89万
  • 项目类别:
    Standard Grant
Collaborative Research: Halogen Behavior In the Pluton-To-Volcanic Arc System
合作研究:岩体到火山弧系统中的卤素行为
  • 批准号:
    2211242
  • 财政年份:
    2022
  • 资助金额:
    $ 24.89万
  • 项目类别:
    Standard Grant
Collaborative Research: Rodingites as Recorders of Tectonic Processes from the Seafloor to Convergence: A case study of the Dun Mountain Ophiolite Belt
合作研究:罗丁岩作为从海底到聚合的构造过程的记录者:以敦山蛇绿岩带为例
  • 批准号:
    2147570
  • 财政年份:
    2022
  • 资助金额:
    $ 24.89万
  • 项目类别:
    Standard Grant
Collaborative Research: Fluid-mobile element cycling (halogens, boron, lithium) through the forearc of Costa Rica
合作研究:通过哥斯达黎加弧前的流体移动元素循环(卤素、硼、锂)
  • 批准号:
    1850711
  • 财政年份:
    2019
  • 资助金额:
    $ 24.89万
  • 项目类别:
    Standard Grant
Sequestration of Halogens in the Sub-continental Lithospheric Mantle: Implications for Global Element Cycling
次大陆岩石圈地幔中卤素的封存:对全球元素循环的影响
  • 批准号:
    1850749
  • 财政年份:
    2019
  • 资助金额:
    $ 24.89万
  • 项目类别:
    Standard Grant
Retrograde Metamorphism in the Greek Cycladic Islands as a Window into Exhumation Mechanisms of High Pressure Terranes
希腊基克拉迪群岛的逆变质作用是了解高压地体折返机制的窗口
  • 批准号:
    1725110
  • 财政年份:
    2017
  • 资助金额:
    $ 24.89万
  • 项目类别:
    Standard Grant
CAREER: Rheological Evolution of Subduction Interface Shear Zones: Insights From Exhumed Subduction Complexes
职业:俯冲界面剪切带的流变演化:来自挖掘出的俯冲复合体的见解
  • 批准号:
    1555346
  • 财政年份:
    2016
  • 资助金额:
    $ 24.89万
  • 项目类别:
    Continuing Grant
Fluid-mobile and volatile element (Cl, B, and Li) cycling through the forearc: Case study of cold and thermal spring geochemistries from the Hikurangi accretionary prism, New Zeala
流体流动元素和挥发性元素(Cl、B 和 Li)在前弧循环:新西兰 Hikurangi 增生棱镜冷泉和温泉地球化学的案例研究
  • 批准号:
    1455432
  • 财政年份:
    2016
  • 资助金额:
    $ 24.89万
  • 项目类别:
    Continuing Grant
Chlorine Isotope Geochemistry of Volcanic Systems
火山系统的氯同位素地球化学
  • 批准号:
    0711533
  • 财政年份:
    2007
  • 资助金额:
    $ 24.89万
  • 项目类别:
    Standard Grant

相似国自然基金

黄土蜗牛化石碳酸盐二元同位素("Clumped isotope")古温度重建研究
  • 批准号:
    41073065
  • 批准年份:
    2010
  • 资助金额:
    52.0 万元
  • 项目类别:
    面上项目

相似海外基金

CAREER: GLOW: The Long-Term Histories of Geologically Active Solar System Moons from Isotope Geochemistry
职业:发光:同位素地球化学中地质活跃的太阳系卫星的长期历史
  • 批准号:
    2238344
  • 财政年份:
    2023
  • 资助金额:
    $ 24.89万
  • 项目类别:
    Continuing Grant
EAR-PF: Quantifying evaporation in Mono Basin: Bridging the gap between hydrologic modeling and paleoclimate records using triple oxygen and clumped isotope geochemistry
EAR-PF:量化莫诺盆地的蒸发:利用三重氧和聚集同位素地球化学弥合水文模型和古气候记录之间的差距
  • 批准号:
    2204433
  • 财政年份:
    2023
  • 资助金额:
    $ 24.89万
  • 项目类别:
    Fellowship Award
Sulfur Isotope Geochemistry
硫同位素地球化学
  • 批准号:
    CRC-2018-00084
  • 财政年份:
    2022
  • 资助金额:
    $ 24.89万
  • 项目类别:
    Canada Research Chairs
Isotope Geochemistry
同位素地球化学
  • 批准号:
    CRC-2016-00232
  • 财政年份:
    2022
  • 资助金额:
    $ 24.89万
  • 项目类别:
    Canada Research Chairs
Redox-Sensitive Metal Isotope Geochemistry
氧化还原敏感金属同位素地球化学
  • 批准号:
    CRC-2018-00039
  • 财政年份:
    2022
  • 资助金额:
    $ 24.89万
  • 项目类别:
    Canada Research Chairs
Isotope Geochemistry of the Neoproterozoic Windermere Supergroup, B.C., Canada: Implications for Sediment Provenance and Paleoenvironmental Conditions
加拿大不列颠哥伦比亚省新元古代温德米尔超群的同位素地球化学:对沉积物来源和古环境条件的影响
  • 批准号:
    565792-2021
  • 财政年份:
    2021
  • 资助金额:
    $ 24.89万
  • 项目类别:
    Alexander Graham Bell Canada Graduate Scholarships - Master's
Sulfur Isotope Geochemistry
硫同位素地球化学
  • 批准号:
    CRC-2018-00084
  • 财政年份:
    2021
  • 资助金额:
    $ 24.89万
  • 项目类别:
    Canada Research Chairs
Isotope Geochemistry
同位素地球化学
  • 批准号:
    CRC-2016-00232
  • 财政年份:
    2021
  • 资助金额:
    $ 24.89万
  • 项目类别:
    Canada Research Chairs
Redox-Sensitive Metal Isotope Geochemistry
氧化还原敏感金属同位素地球化学
  • 批准号:
    CRC-2018-00039
  • 财政年份:
    2021
  • 资助金额:
    $ 24.89万
  • 项目类别:
    Canada Research Chairs
Acquisition of a continuous flow isotope ratio mass spectrometer (IRMS) system for the Organic Geochemistry Core Facility at Brown University
为布朗大学有机地球化学核心设施购置连续流同位素比质谱仪 (IRMS) 系统
  • 批准号:
    2025125
  • 财政年份:
    2020
  • 资助金额:
    $ 24.89万
  • 项目类别:
    Standard Grant
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了