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
基本信息
- 批准号:1850749
- 负责人:
- 金额:$ 35.01万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2019
- 资助国家:美国
- 起止时间:2019-05-15 至 2024-04-30
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The halogen elements (chlorine, fluorine, iodine, and bromine) play a fundamental role in modifying the properties of fluids and minerals on Earth. For example, the addition of halogens to fluids can cause minerals to break down at different temperatures and pressures, as well as, increase the ability of the fluid to transport of metals. Halogens are enriched in surface reservoirs (e.g., sedimentary pore fluids, sediments) compared to the Earth's mantle. The subduction of these reservoirs brings halogens into the mantle. Halogens can then be returned to the Earth's surface at arc volcanoes. However, mass balance constraints suggest that more halogens are subducted to the mantle than are returned to the Earth's surface via arc volcanism. These observations lead most researchers to suggest that an excess of halogens are being continually delivered to the mantle. This imbalance as implications for the long-term chemical evolution of the Earth's surficial reservoirs and mantle. However, several halogen reservoirs remain unquantified and may account for this disconnect. Here it is proposed that halogens may be sequestered in the sub-continental lithospheric mantle (i.e., the upper mantle below the base of the continental crust) and thus not accounted for in calculations. By quantifying the concentrations of halogens in the sub-continental lithospheric mantle, the overall halogen budget can be constrained. In addition to the intellectual impacts of improved understanding of elemental transfer through subductions zones, the broader impacts involve training of graduate and undergraduate students and participation in GeoFORCE, a summer program that engages outstanding students from select low performing minority-serving high schools in STEM fields.This work will constrain the effects of subduction on the subcontinental lithospheric mantle halogen budget and the extent to which the subcontinental lithospheric mantle may act as a major halogen reservoir and control the overall halogen budget by "isolating" halogens from the subduction zone cycle for potentially long periods of time. This work will also provide insights as to how subduction processes modify the halogen concentrations and ratios in material returned to the convecting mantle. Bulk halogen concentrations, as well as, in situ halogen concentrations of hydrous (e.g., chlorite, amphibole, antigorite) and anhydrous minerals (e.g., pyroxene, olivine) of mantle xenoliths from the western United States that have been geochemically modified by the subducting Farallon slab will be measured. These data will be compared with other lithophile tracers of subduction input and melt depletion. The subduction-influenced xenoliths will be compared to non-subduction-modified mantle xenoliths and abyssal peridotites, which will serve as a baseline for halogen content in the convecting mantle.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
卤素元素(氯、氟、碘和溴)在改变地球上流体和矿物的性质方面起着重要作用。例如,在流体中添加卤素可以导致矿物在不同的温度和压力下分解,并增加流体运输金属的能力。与地幔相比,卤素在地表储集层(如沉积孔隙流体、沉积物)中富含卤素。这些储集层的俯冲将卤素带入地幔。然后,卤素可以在弧形火山中返回地球表面。然而,物质平衡的限制表明,更多的卤素被俯冲到地幔,而不是通过弧形火山作用返回地球表面。这些观察结果导致大多数研究人员认为,过量的卤素正在不断地输送到地幔。这种不平衡对地球表面储集层和地幔的长期化学演化有影响。然而,几个卤素储集层仍未量化,可能是造成这种脱节的原因。这里提出,卤素可能被隔离在次大陆岩石圈地幔(即大陆地壳底部以下的上地幔)中,因此不在计算中考虑。通过量化次大陆岩石圈地幔中的卤素浓度,可以限制总的卤素收支。除了通过俯冲带更好地了解元素迁移的智力影响外,更广泛的影响还包括对研究生和本科生的培训,以及参与GeoFORCE,这是一个暑期项目,吸引表现不佳的少数族裔高中的优秀学生参与STEM领域。这项工作将限制俯冲对次大陆岩石圈地幔卤素预算的影响,以及次大陆岩石圈地幔可能充当主要卤素储藏库的程度,并通过将卤素与俯冲带循环隔离很长一段时间来控制总体卤素预算。这项工作还将提供关于俯冲过程如何改变返回对流地幔的物质中的卤素浓度和比率的见解。将测量经俯冲法拉隆板块地球化学改造的美国西部地幔包体的散装卤素浓度以及含水矿物(如绿泥石、角闪石、斜长石)和无水矿物(如辉石、橄榄石)的原地卤素浓度。这些数据将与其他消减输入和熔体耗尽的亲石示踪剂进行比较。受俯冲影响的包体将与非俯冲修改的地幔包体和深海橄榄岩进行比较,这将作为对流地幔中卤素含量的基线。这一裁决反映了NSF的法定使命,并通过使用基金会的智力优势和更广泛的影响审查标准进行评估,被认为值得支持。
项目成果
期刊论文数量(2)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Halogen enrichment in the North American lithospheric mantle from the dehydration of the Farallon plate
法拉隆板块脱水导致北美岩石圈地幔中卤素富集
- DOI:10.1016/j.gca.2023.03.014
- 发表时间:2023
- 期刊:
- 影响因子:5
- 作者:Segee-Wright, George;Barnes, Jaime D.;Lassiter, John C.;Holmes, Duncan J.;Beaudoin, Grace M.;Chatterjee, Rudra;Stockli, Daniel F.;Hoffmann, J. Elis;John, Timm
- 通讯作者:John, Timm
Tracking halogen recycling and volatile loss in kimberlite magmatism from Greenland: Evidence from combined F-Cl-Br and δ37Cl systematics
追踪格陵兰金伯利岩岩浆作用中的卤素回收和挥发性损失:来自组合 F-Cl-Br 和 δ37Cl 系统学的证据
- DOI:10.1016/j.lithos.2021.105976
- 发表时间:2021
- 期刊:
- 影响因子:3.5
- 作者:Hoare, Brendan C.;Tomlinson, Emma L.;Barnes, Jaime D.;Tappe, Sebastian;Marks, Michael A.W.;Epp, Tatjana;Caulfield, John;Riegler, Thomas
- 通讯作者:Riegler, Thomas
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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
- DOI:
10.1109/mahss.2008.4660059 - 发表时间:
2008 - 期刊:
- 影响因子:0
- 作者:
Hassan Ghasemzadeh;Jaime Barnes;E. Guenterberg;R. Jafari - 通讯作者:
R. Jafari
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
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{{ 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:
$ 35.01万 - 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:
$ 35.01万 - 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:
$ 35.01万 - 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:
$ 35.01万 - 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:
$ 35.01万 - 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:
$ 35.01万 - 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:
$ 35.01万 - 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:
$ 35.01万 - 项目类别:
Continuing Grant
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
- 批准号:
0946686 - 财政年份:2010
- 资助金额:
$ 35.01万 - 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:
$ 35.01万 - 项目类别:
Standard Grant
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