Collaborative Research: Damage Defects and Diffusion of Noble Gases in Minerals: He in Zircon as a Model System

合作研究:矿物中稀有气体的损伤缺陷和扩散:锆石中的 He 作为模型系统

基本信息

  • 批准号:
    1426749
  • 负责人:
  • 金额:
    $ 16.36万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    2014
  • 资助国家:
    美国
  • 起止时间:
    2014-09-01 至 2017-08-31
  • 项目状态:
    已结题

项目摘要

The noble gases (helium, neon, argon, krypton, xenon, and radon) play a central role in understanding a wide variety of Earth and planetary processes, from tracing the origins of meteorites, to the differentiation of Earth's mantle, to dating the timing and rates of geologic processes. However, while we can now measure noble gases in minerals very precisely, our understanding of how they are incorporated into, migrate through, and are lost from minerals is simplistic and likely wrong in important ways. This work will use a series of novel experiments to understand the behavior of one noble gas, helium, in one mineral, zircon, to build a general understanding of noble gas behavior in other systems.The ability to measure distinct isotopes of helium in zircon specimens with differing amounts and types of crystal defects and crystallographic orientations (as well as the widespread utility of the radiogenic He radioisotopic dating system) make this an ideal model system for this work. The project will focus on radiogenic 4He, as well as 3He and 4He implanted or generated in situ in zircons with varying amounts of radiation damage from both heavy nuclide recoil and light ion or neutron damage, and will also examine the effects of damage defect annealing on He behavior. These experiments will distinguish between the effects of damage defects as traps, tortuosity enhancers, and fast-paths at various levels of pro- and retrograde accumulation.
稀有气体(氦、氖、氩、氪、氙和氡)在理解各种各样的地球和行星过程中发挥着核心作用,从追踪陨石的起源到地幔的分化,再到确定地质过程的时间和速率。然而,虽然我们现在可以非常精确地测量矿物中的惰性气体,但我们对它们如何被吸收、迁移和从矿物中消失的理解过于简单,而且在很多重要方面可能是错误的。这项工作将使用一系列新颖的实验来了解一种稀有气体氦在一种矿物锆石中的行为,从而建立对其他系统中稀有气体行为的一般理解。具有不同数量和类型的晶体缺陷和晶体取向的锆石样品中不同氦同位素的测量能力(以及放射性成因He放射性同位素定年系统的广泛应用)使其成为这项工作的理想模型系统。该项目将重点研究放射性成因的4He,以及在锆石中植入或原位生成的3He和4He,这些锆石受到来自重核素反冲力和轻离子或中子损伤的不同程度的辐射损伤,并将研究损伤缺陷退火对He行为的影响。这些实验将区分损伤缺陷的影响,如陷阱、扭曲增强剂和不同水平的正向和逆行积累的快速路径。

项目成果

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Peter Reiners其他文献

Crustal deformation and exhumation within the India-Eurasia oblique convergence zone: New insights from the Ailao Shan-Red River shear zone
Crustal deformation and exhumation within the India-Eurasia oblique convergence zone: New insights from the Ailao Shan-Red River shear zone
印度-欧亚大陆斜交带内的地壳变形与折返:来自哀牢山-红河剪切带的新认识
Lithosphere today ...
当今的岩石圈……
  • DOI:
    10.1038/472420a
  • 发表时间:
    2011-04-27
  • 期刊:
  • 影响因子:
    48.500
  • 作者:
    George Zandt;Peter Reiners
  • 通讯作者:
    Peter Reiners

Peter Reiners的其他文献

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{{ truncateString('Peter Reiners', 18)}}的其他基金

Collaborative Research: Development of Hematite (U-Th)/He Chronology to Directly Date Fault Slip and Ancient Seismicity
合作研究:开发赤铁矿 (U-Th)/He 年代学以直接测定断层滑移和古地震活动的年代
  • 批准号:
    1419745
  • 财政年份:
    2014
  • 资助金额:
    $ 16.36万
  • 项目类别:
    Continuing Grant
Geochronology of Bedrock-hosted Secondary Iron Oxides and Shallow Crustal Fluid-flow and Brittle Deformation Histories
基岩中次生铁氧化物的地质年代学和浅地壳流体流动和脆性变形历史
  • 批准号:
    1219653
  • 财政年份:
    2012
  • 资助金额:
    $ 16.36万
  • 项目类别:
    Standard Grant
Collaborative Research: Little Devils Postpile Revisited: Intercalibration of Thermochronometer Kinetics in a Contact Aureole
合作研究:重新审视小恶魔后堆:接触光环中测温计动力学的相互校准
  • 批准号:
    1049879
  • 财政年份:
    2011
  • 资助金额:
    $ 16.36万
  • 项目类别:
    Continuing Grant
Addressing Current Challenges in (U-Th)/He Thermochronology and Running Summer Student Workshops
应对当前 (U-Th)/He 热年代学挑战并举办暑期学生研讨会
  • 批准号:
    0910577
  • 财政年份:
    2009
  • 资助金额:
    $ 16.36万
  • 项目类别:
    Standard Grant
Collaborative Research: Erosion History and Sediment Provenance of East Antarctica from Multi-method Detrital Geo- and Thermochronology
合作研究:多方法碎屑地质年代学和热年代学研究东南极洲的侵蚀历史和沉积物来源
  • 批准号:
    0838722
  • 财政年份:
    2009
  • 资助金额:
    $ 16.36万
  • 项目类别:
    Standard Grant
Collaborative Research: SGER: Triple-dating (Pb-FT-He) of Antarctic Detritus and the Origin of the Gamburtsev Mountains
合作研究:SGER:南极碎屑的三次测年(Pb-FT-He)和甘布尔采夫山脉的起源
  • 批准号:
    0817163
  • 财政年份:
    2008
  • 资助金额:
    $ 16.36万
  • 项目类别:
    Standard Grant
Technician Support: Arizona Radiogenic Helium Dating Lab and HR-ICP-MS Lab
技术人员支持:亚利桑那州放射性氦测年实验室和 HR-ICP-MS 实验室
  • 批准号:
    0732380
  • 财政年份:
    2008
  • 资助金额:
    $ 16.36万
  • 项目类别:
    Continuing Grant
Collaborative Research: Clinker Geochronology and Geomorphic Evolution of the Powder River Basin, Wyoming
合作研究:怀俄明州粉河盆地的熟料地质年代学和地貌演化
  • 批准号:
    0649425
  • 财政年份:
    2006
  • 资助金额:
    $ 16.36万
  • 项目类别:
    Standard Grant
CAREER: Innovative (U-Th)/He Chronometry and Integration with Student Teaching and Research
职业:创新(U-Th)/He 计时学以及与学生教学和研究的整合
  • 批准号:
    0649707
  • 财政年份:
    2006
  • 资助金额:
    $ 16.36万
  • 项目类别:
    Continuing Grant
Collaborative Research: Clinker Geochronology and Geomorphic Evolution of the Powder River Basin, Wyoming
合作研究:怀俄明州粉河盆地的熟料地质年代学和地貌演化
  • 批准号:
    0518818
  • 财政年份:
    2005
  • 资助金额:
    $ 16.36万
  • 项目类别:
    Standard Grant

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