Collaborative Research: Linking High 3He/4He to Other Isotopic Systems in Baffin Island Lavas
合作研究:将高 3He/4He 与巴芬岛熔岩中的其他同位素系统联系起来
基本信息
- 批准号:1911902
- 负责人:
- 金额:$ 18.43万
- 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:2019-07-01 至 2022-06-30
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Rare volcanic rocks with isotopically light helium (i.e., high 3He/4He ratios) are thought to contain material that ascended in plumes from early formed and long isolated reservoirs at the base of Earth's mantle. Lavas erupted on Baffin Island in arctic Canada have the highest 3He/4He ratios found in any terrestrial rocks and thus afford the best opportunity to investigate the stratification and long-term evolution of the deep Earth. This project will employ novel geochemical techniques to study a suite of high 3He/4He lavas collected on Baffin Island in 2018. The primary objective of the project is to improve our understanding of helium behavior in magmatic settings. Combined with a thorough petrologic and geochemical assessment of the samples, our results will provide new insights about deep Earth processes. This collaborative project will support graduate students and highly specialized technical support staff at Woods Hole Oceanographic Institution and California Institute of Technology. The project team also will partner with a Massachusetts-based rehabilitation center to provide employment opportunities to local residents. All results will be published in peer-reviewed journals, as well as translated into Inuktitut and shared with the Baffin Island Inuit communities that assisted with fieldwork.Understanding the composition and the long-term evolution of the deep Earth relies on an ability to link high 3He/4He ratios to other chemical components in volcanic rocks. This study will investigate helium (de)coupling from other elements by combing detailed petrographic and geochemical observations with precise 3He/4He measurements. The project will utilize innovative techniques including helium diffusion experiments, X-ray computed tomography, laser ablation micro-drilling, and single-grain crushing to investigate helium mobility in olivine crystals, which are the primary hosts of helium in the lavas. To fill knowledge gaps about Baffin Island lava geochemistry, researchers also will measure 186Os, 182W, and heavier noble gas (Ne, Ar, and Xe) isotopic abundances. This comprehensive geochemical assessment of these understudied lavas will offer a fresh perspective on enigmatic deep Earth processes. This collaborative project will support graduate students and highly specialized technical support staff at Woods Hole Oceanographic Institution and California Institute of Technology. Project members will partner with a Massachusetts-based rehabilitation center to provide employment opportunities to local residents. All results will be published in peer-reviewed journals, as well as translated into Inuktitut and shared with the Baffin Island Inuit communities that assisted with fieldwork.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.
稀有火山岩具有同位素轻氦(即高3He/4He比率),被认为含有从地幔底部早期形成和长期孤立的储层中以羽状上升的物质。在加拿大北极的巴芬岛上喷发的熔岩具有在陆地岩石中发现的最高的3He/4He比率,因此为研究地球深处的分层和长期演化提供了最好的机会。该项目将采用新的地球化学技术来研究2018年在巴芬岛收集的一套高3He/4He熔岩。该项目的主要目标是提高我们对岩浆环境中氦行为的理解。结合对样品进行彻底的岩石学和地球化学评估,我们的结果将为地球深部过程提供新的见解。该合作项目将支持伍兹霍尔海洋研究所和加州理工学院的研究生和高度专业化的技术支持人员。项目组还将与马萨诸塞州的一家康复中心合作,为当地居民提供就业机会。所有结果将发表在同行评议的期刊上,并翻译成因纽特语,与协助实地工作的巴芬岛因纽特人社区分享。了解地球深处的组成和长期演化依赖于将高3He/4He比率与火山岩中其他化学成分联系起来的能力。本研究将通过详细的岩石学和地球化学观测与精确的3He/4He测量相结合,研究氦(de)与其他元素的耦合。该项目将利用氦扩散实验、x射线计算机断层扫描、激光烧蚀微钻和单粒破碎等创新技术来研究橄榄石晶体中的氦迁移率,橄榄石晶体是熔岩中氦的主要宿主。为了填补巴芬岛熔岩地球化学的知识空白,研究人员还将测量186o, 182W和更重的稀有气体(Ne, Ar和Xe)同位素丰度。对这些未被充分研究的熔岩进行全面的地球化学评估,将为神秘的地球深部过程提供一个新的视角。该合作项目将支持伍兹霍尔海洋研究所和加州理工学院的研究生和高度专业化的技术支持人员。项目成员将与马萨诸塞州的一家康复中心合作,为当地居民提供就业机会。所有结果将发表在同行评议的期刊上,并翻译成因纽特语,与协助实地工作的巴芬岛因纽特人社区分享。该奖项反映了美国国家科学基金会的法定使命,并通过使用基金会的知识价值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(4)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Geochemistry and mineralogy of the Jebel Aja Igneous Intrusion and the associated exotic pegmatites, Arabian Shield, Saudi Arabia
沙特阿拉伯阿拉伯地盾阿贾山火成岩和相关的奇异伟晶岩的地球化学和矿物学
- DOI:10.1016/j.lithos.2021.106395
- 发表时间:2021
- 期刊:
- 影响因子:3.5
- 作者:Gahlan, Hisham A.;Asimow, Paul D.;Azer, Mokhles K.;Ma, Chi;Al-Kahtany, Khaled M.;Hakeem, Alaa Y.
- 通讯作者:Hakeem, Alaa Y.
Eruption Rates, Tempo, and Stratigraphy of Paleocene Flood Basalts on Baffin Island, Canada
加拿大巴芬岛古新世溢流玄武岩的喷发率、节奏和地层
- DOI:10.1029/2021gc010172
- 发表时间:2022
- 期刊:
- 影响因子:0
- 作者:Biasi, Joseph;Asimow, Paul;Horton, Forrest;Boyes, Xenia
- 通讯作者:Boyes, Xenia
Formation of gold-bearing listvenite in the mantle section of the Neoproterozoic Bir Umq ophiolite, Western Arabian Shield, Saudi Arabia
沙特阿拉伯西阿拉伯地盾新元古代 Bir Umq 蛇绿岩地幔部分含金利斯特韦尼特的形成
- DOI:10.1016/j.jafrearsci.2022.104517
- 发表时间:2022
- 期刊:
- 影响因子:2.3
- 作者:Gahlan, Hisham A.;Azer, Mokhles K.;Asimow, Paul D.;Al-Kahtany, Khaled M.
- 通讯作者:Al-Kahtany, Khaled M.
Primordial neon in high-3He/4He Baffin Island olivines
高 3He/4He 巴芬岛橄榄石中的原始氖
- DOI:10.1016/j.epsl.2021.116762
- 发表时间:2021
- 期刊:
- 影响因子:5.3
- 作者:Horton, F.;Curtice, J.;Farley, K.A.;Kurz, M.D.;Asimow, P.D.;Treffkorn, J.;Boyes, X.M.
- 通讯作者:Boyes, X.M.
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Paul Asimow其他文献
深俯冲陆壳岩石部分熔融与苏鲁超高压榴辉岩中长英质多晶包裹体的形成
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
曾令森;陈方远;陈晶;梁凤华;Paul Asimow - 通讯作者:
Paul Asimow
Neoproterozoic boninite-series rocks in South China: A depleted mantle source modified by sediment-derived melt
华南新元古代栉泥岩系岩石:沉积物熔融改造的贫化地幔源
- DOI:
10.1016/j.chemgeo.2014.09.004 - 发表时间:
2014-11 - 期刊:
- 影响因子:3.9
- 作者:
Zhao Jun-Hong;Paul Asimow - 通讯作者:
Paul Asimow
Paul Asimow的其他文献
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{{ truncateString('Paul Asimow', 18)}}的其他基金
MRI: Acquisition of a field emission electron microprobe for Caltech Division of Geological and Planetary Sciences
MRI:为加州理工学院地质与行星科学部购买场发射电子探针
- 批准号:
2117942 - 财政年份:2021
- 资助金额:
$ 18.43万 - 项目类别:
Standard Grant
Geoinformatics Facility: Integration of alphaMELTS petrologic software with flexible modeling environments
地理信息学设施:alphaMELTS 岩石学软件与灵活的建模环境的集成
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1947616 - 财政年份:2020
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Continuing Grant
Collaborative Research: EarthCube Data Capabilities: A data-driven modeling infrastructure to support research and education in volcanology, geochemistry and petrology
协作研究:EarthCube 数据功能:数据驱动的建模基础设施,支持火山学、地球化学和岩石学的研究和教育
- 批准号:
2026819 - 财政年份:2020
- 资助金额:
$ 18.43万 - 项目类别:
Standard Grant
The effect of rotational evolution on the surface and interior of the early Earth
自转演化对早期地球表面和内部的影响
- 批准号:
1947614 - 财政年份:2020
- 资助金额:
$ 18.43万 - 项目类别:
Standard Grant
Shock Wave Studies of Liquids in Earth's Core and Mantle
地核和地幔液体的冲击波研究
- 批准号:
1725349 - 财政年份:2018
- 资助金额:
$ 18.43万 - 项目类别:
Standard Grant
Laboratory Technician Support: Shock Wave Experiments in Geophysics
实验室技术人员支持:地球物理学中的冲击波实验
- 批准号:
1829277 - 财政年份:2018
- 资助金额:
$ 18.43万 - 项目类别:
Continuing Grant
The role of grain-scale non-equilibrium thermodynamics in the production and evolution of oceanic crust and lithosphere
颗粒尺度非平衡热力学在洋壳和岩石圈产生和演化中的作用
- 批准号:
1826310 - 财政年份:2018
- 资助金额:
$ 18.43万 - 项目类别:
Standard Grant
Collaborative Research: Sea level induced hydrothermal activity as a trigger for glacial terminations
合作研究:海平面引起的热液活动作为冰川终止的触发因素
- 批准号:
1558372 - 财政年份:2016
- 资助金额:
$ 18.43万 - 项目类别:
Standard Grant
Fate of Subducted Carbonates: Structure Prediction and Solid Solution Modeling
俯冲碳酸盐的命运:结构预测和固溶体建模
- 批准号:
1551433 - 财政年份:2016
- 资助金额:
$ 18.43万 - 项目类别:
Continuing Grant
Geoinformatics: alphaMELTS computational thermodynamics software
地理信息学:alphaMELTS 计算热力学软件
- 批准号:
1550934 - 财政年份:2016
- 资助金额:
$ 18.43万 - 项目类别:
Continuing Grant
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