RPG: An Investigation of the Effects of Recrystallization Processes on the Metasomatism of Mantle Peridotites

RPG:再结晶过程对地幔橄榄岩交代作用影响的研究

基本信息

  • 批准号:
    9210165
  • 负责人:
  • 金额:
    --
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    1992
  • 资助国家:
    美国
  • 起止时间:
    1992-08-01 至 1993-11-30
  • 项目状态:
    已结题

项目摘要

The proposed research will investigate the mechanism of isotopic and chemical interaction between metasomatic fluid and upper mantle assemblages. Xenolith samples from South African kimberlites and alkali basalts for the southwestern United States have been chosen for study. Neoblasts, porphyroclasts, and non-recrystallized phases will be analyzed for REE, LILE (Ba, Sr, Rb, Na, K) and HFSE (Ti, Nb, Zr, Hf, Ta) by a combination of electron microprobe and SIMS to discern the relationship of incompatible trace element geochemistry to recrystallization. Possible variations in oxidation state associated with textural variations will also be investigated. Isotopic measurements (87Sr/86Sr, and 143Nd/144ND) will be made on separates of porphyrocalsts and neoblasts of olivine and orthopyroxene to determine whether isotopic compositions vary systematically with grain size. In addition, isotopic measurements for garnet, clinopyroxene, and when possible minor phases (i.e. oxides or mica) will be determined so that the total data set can be combined with data for garnet and spinel lherzolites from basalts. This investigation will add to the understanding of the upper mantle processes which result in metasomatism.
本研究将探讨交代流体与上地幔组合之间的同位素和化学相互作用机制。来自南非金伯利岩和美国西南部碱性玄武岩的捕虏体样本被选为研究对象。利用电子探针和SIMS相结合的方法,对新生母细胞、斑岩碎屑和非重结晶相进行REE、LILE (Ba、Sr、Rb、Na、K)和HFSE (Ti、Nb、Zr、Hf、Ta)的分析,探讨不相容微量元素地球化学与重结晶的关系。与结构变化相关的氧化态可能的变化也将被研究。同位素测量(87Sr/86Sr和143Nd/144ND)将对斑岩和橄榄石和正辉石的新母细胞分离物进行测定,以确定同位素组成是否随晶粒大小系统性地变化。此外,还将测定石榴石、斜辉石和少量相(即氧化物或云母)的同位素,以便将整个数据集与玄武岩中石榴石和尖晶石的数据结合起来。这项研究将增加对导致交代作用的上地幔过程的认识。

项目成果

期刊论文数量(0)
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专利数量(0)

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Kathleen Johnson其他文献

Precipitation in eastern China over the past millennium varied with large-scale climate patterns
近千年来中国东部降水变化呈现大范围气候格局
  • DOI:
    10.1038/s43247-022-00664-7
  • 发表时间:
    2022-12
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Mengyu Wang;Chaoyong Hu;Yuhui Liu;Lianlian Li;Shucheng Xie;Kathleen Johnson
  • 通讯作者:
    Kathleen Johnson
Care of Students with Disabilities in Schools: A Team Approach
学校残疾学生的护理:团队方法
ASL CLeaR: STEM Education Tools for Deaf Students
ASL CLeaR:聋哑学生的 STEM 教育工具

Kathleen Johnson的其他文献

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{{ truncateString('Kathleen Johnson', 18)}}的其他基金

Implementation Grant: A Cultural, Learning, and Institutional Model to Accelerate Transformations for Environmental Justice (CLIMATE Justice)
实施补助金:加速环境正义转型的文化、学习和制度模式(CLIMATE Justice)
  • 批准号:
    2228216
  • 财政年份:
    2023
  • 资助金额:
    --
  • 项目类别:
    Continuing Grant
Collaborative Research: P2C2--Speleothem Constraints on Seasonal Hydroclimate Variability in Mainland Southeast Asia since the Late Pleistocene
合作研究:P2C2--晚更新世以来东南亚大陆洞穴水文季节变化的制约
  • 批准号:
    2103129
  • 财政年份:
    2021
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Collaborative Research: P2C2: Reconstructing Northeast Mexico Hydroclimate since the Last Interglacial Period
合作研究:P2C2:重建末次间冰期以来墨西哥东北部的水文气候
  • 批准号:
    1806090
  • 财政年份:
    2019
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Collaborative Research: P2C2--Calibrating South East Asian Proxies: Speleothems and Tree-Rings
合作研究:P2C2——校准东南亚替代物:洞穴和树木年轮
  • 批准号:
    1603056
  • 财政年份:
    2017
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Collaborative Research: P2C2--Reconstructing Deglacial and Holocene Climate Variability in Southeast Asia Using Speleothems and Isotope-Enabled Model Simulations
合作研究:P2C2——利用洞穴岩和同位素模型模拟重建东南亚冰消期和全新世的气候变化
  • 批准号:
    1405472
  • 财政年份:
    2014
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
OEDG Track 2: A residential summer institute in Earth System Science for American Indian high school students
OEDG Track 2:为美洲印第安人高中生开设的地球系统科学暑期住宿学院
  • 批准号:
    1108524
  • 财政年份:
    2011
  • 资助金额:
    --
  • 项目类别:
    Continuing Grant
P2C2: Testing Speleothem-Based Radiocarbon Calibrations Through A Process-Based Cave Study and a New 35 Kyr Calibration Curve
P2C2:通过基于过程的洞穴研究和新的 35 Kyr 校准曲线测试基于洞穴的放射性碳校准
  • 批准号:
    0903101
  • 财政年份:
    2009
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
MRI: Acquisition of a High-Resolution Double-Focusing Magnetic Sector-Field Mass Spectrometer (HR-ICP-MS) for Paleoclimate and Biogeochemical Research
MRI:购买高分辨率双聚焦扇形磁场质谱仪 (HR-ICP-MS),用于古气候和生物地球化学研究
  • 批准号:
    0821841
  • 财政年份:
    2008
  • 资助金额:
    --
  • 项目类别:
    Standard Grant

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