Isotopic Studies of Deccan and Parh Group Basalts, and East Tethyan and Old Western Indian Ocean Seafloor

德干和帕尔群玄武岩以及东特提斯和旧西印度洋海底的同位素研究

基本信息

  • 批准号:
    9418168
  • 负责人:
  • 金额:
    $ 12.98万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    1995
  • 资助国家:
    美国
  • 起止时间:
    1995-01-01 至 1997-12-31
  • 项目状态:
    已结题

项目摘要

9418168 Mahoney This project will (1) continue successful geochemical work related to the Deccan Traps of India, and (2) investigate the origins of the vast but enigmatic Indian Ocean mantle domain. Recent models attribute the Deccan event to impact of the Reunion plume head beneath a fast-moving Greater India; however, a study of alkalic intrusions north of the Deccan by Basu et al. 1993 suggests that the Reunion hotspot existed at least 3 m.y. before the main Deccan eruptions. Propose to analyze a collection of Parh basalts for Nd, Pb, and Sr isotopes and ICP-MS trace elements, in order to establish whether they are indeed early Reunion hotspot products. Recent investigations have shown that modern Indian Ocean MORB, has a Pb-Nd-Sr isotopic signature quite distinct from that of Pacific and North Atlantic MORB. The earlier history of this immense mantle domain is uncertain, however, and whether it originated and grew with the breakup of Gondwana and the opening of the Indian Ocean, or is an older feature inherited from the East Tethyan Ocean asthenosphere is unknown. Propose to analyze Pb, Nd, and Sr isotopes trace elements and , where necessary, major elements from DSDP sites in the western Indian Ocean, and magmatic units of East Tethyan seafloor preserved in the Masirah, Yarlung-Zangpo, and Baluchistan ophiolites in order to answer this question.
9418168 Mahoney该项目将(1)继续与印度德干圈闭有关的成功地球化学工作,(2)调查巨大但神秘的印度洋地幔域的起源。 最近的模型将德干事件归因于快速移动的大印度之下的留尼汪羽流头的影响;然而,Basu等人1993年对德干北部碱性侵入的研究表明,留尼汪热点至少存在300万年。在德干火山爆发之前 建议分析一系列帕尔玄武岩的Nd,Pb和Sr同位素和ICP-MS微量元素,以确定它们是否确实是早期留尼汪热点产品。 最近的研究表明,现代印度洋MORB具有与太平洋和北大西洋MORB截然不同的Pb-Nd-Sr同位素特征。 然而,这个巨大的地幔域的早期历史是不确定的,它是随着冈瓦纳大陆的分裂和印度洋的开放而起源和发展的,还是从东特提斯洋软流圈继承下来的更古老的特征也是未知的。 建议分析Pb,Nd和Sr同位素微量元素,并在必要时,从DSDP网站在西印度洋,东特提斯海底的岩浆单位保存在Masirah,雅鲁藏布江,俾路支蛇绿岩,以回答这个问题。

项目成果

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John Mahoney其他文献

Development of a Geochemical Model to Predict Surface Water Discharge Compositions in Northern Saskatchewan: Applications of PHREEQC and PhreePlot to Identify Active Geochemical Processes
  • DOI:
    10.1007/s10230-021-00759-1
  • 发表时间:
    2021-11-28
  • 期刊:
  • 影响因子:
    2.100
  • 作者:
    John Mahoney;Ryan Frey;Valerie Plagnes;Brett Mitchell;John Rowson
  • 通讯作者:
    John Rowson
Prediction Versus Explanation in Educational Psychology: a Cross-Theoretical Approach to Using Teacher Behaviour to Predict Student Engagement in Physical Education
  • DOI:
    10.1007/s10648-023-09786-6
  • 发表时间:
    2023-07-03
  • 期刊:
  • 影响因子:
    8.800
  • 作者:
    Michael Noetel;Philip Parker;Theresa Dicke;Mark R. Beauchamp;Nikos Ntoumanis;Ryan M. Hulteen;Carmel Diezmann;Alexander Yeung;Asghar Ahmadi;Diego Vasconcellos;John Mahoney;Poulomee Datta;Scott Doidge;Chris Lonsdale
  • 通讯作者:
    Chris Lonsdale
Effect of exercise for depression: systematic review and network meta-analysis of randomised controlled trials
运动对抑郁症的影响:随机对照试验的系统回顾和网络荟萃分析
  • DOI:
  • 发表时间:
    2024
  • 期刊:
  • 影响因子:
    0
  • 作者:
    M. Noetel;T. Sanders;Daniel Gallardo;Paul Taylor;Borja Del Pozo Cruz;Daniel J van den Hoek;Jordan J Smith;John Mahoney;Jemima G. Spathis;M. Moresi;Rebecca Pagano;Lisa Pagano;Roberta Vasconcellos;Hugh Arnott;Benjamin J. Varley;Philip Parker;Stuart J H Biddle;Chris Lonsdale
  • 通讯作者:
    Chris Lonsdale
Gender specificity in value structures
  • DOI:
    10.1007/bf00287398
  • 发表时间:
    1979-06-01
  • 期刊:
  • 影响因子:
    3.400
  • 作者:
    John Mahoney;Donna M. L. Heretick;Gary M. Katz
  • 通讯作者:
    Gary M. Katz
759 - Complications of Percutaneous Access and Nephrolithotomy: Non-Operative Management
  • DOI:
    10.1016/s0022-5347(17)75909-5
  • 发表时间:
    1987-06-01
  • 期刊:
  • 影响因子:
  • 作者:
    Susan D. Goldberg;Robin Gray;Eugene L. St. Louis;Michael A.S. Jewett;John Mahoney
  • 通讯作者:
    John Mahoney

John Mahoney的其他文献

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{{ truncateString('John Mahoney', 18)}}的其他基金

An Isotopic Study of Lavas from the Louisville Seamount Chain
路易斯维尔海山链熔岩的同位素研究
  • 批准号:
    0452127
  • 财政年份:
    2005
  • 资助金额:
    $ 12.98万
  • 项目类别:
    Standard Grant
An Isotopic and Elemental Study of Deccan Traps Dikes
德干圈闭岩脉的同位素和元素研究
  • 批准号:
    0229824
  • 财政年份:
    2003
  • 资助金额:
    $ 12.98万
  • 项目类别:
    Continuing Grant
Collaborative Research: Assessing Hotspot Fixity in the Pacific Basin
合作研究:评估太平洋盆地的热点固定性
  • 批准号:
    0004498
  • 财政年份:
    2001
  • 资助金额:
    $ 12.98万
  • 项目类别:
    Continuing Grant
Investigation of Cretaceous East Thethyan Mantle Sources Through An Isotopic Study of Yarlung-Zangpo Suture Zone Basalts, Tibet
西藏雅鲁藏布江缝合带玄武岩同位素研究白垩纪东塞提斯地幔源区
  • 批准号:
    9805318
  • 财政年份:
    1998
  • 资助金额:
    $ 12.98万
  • 项目类别:
    Continuing Grant
Collaborative Research: Origins of the Ontong Java Plateau, SW Pacific: A Stratigraphic and Geochemical Study of Exposed Plateau Basement in the Solomon Islands, Part 2
合作研究:西南太平洋翁通爪哇高原的起源:所罗门群岛裸露高原基底的地层学和地球化学研究,第 2 部分
  • 批准号:
    9612111
  • 财政年份:
    1996
  • 资助金额:
    $ 12.98万
  • 项目类别:
    Standard Grant
1994 Presidential Awardees
1994 年总统获奖者
  • 批准号:
    9550284
  • 财政年份:
    1995
  • 资助金额:
    $ 12.98万
  • 项目类别:
    Standard Grant
Collaborative Research: The Southeast Indian Ridge Between 90'E and 120'E: From a Hot Spot to a Cold Spot
合作研究:东经 90 至 120 之间的东南印度洋脊:从热点到冷点
  • 批准号:
    9419323
  • 财政年份:
    1994
  • 资助金额:
    $ 12.98万
  • 项目类别:
    Continuing Grant
Collaborative Research: Origins of the Ontong Java Plateau,SW Pacific: A Geochemical and Stratigraphic Study of Exposed Plateau Basement in the Solomon Islands
合作研究:西南太平洋翁通爪哇高原的起源:所罗门群岛裸露高原基底的地球化学和地层学研究
  • 批准号:
    9219664
  • 财政年份:
    1993
  • 资助金额:
    $ 12.98万
  • 项目类别:
    Standard Grant
Isotopic Studies of Madagascan Basalts and Deccan Picritic Lavas
马达加斯加玄武岩和德干苦味质熔岩的同位素研究
  • 批准号:
    9104897
  • 财政年份:
    1991
  • 资助金额:
    $ 12.98万
  • 项目类别:
    Standard Grant
Geochemical Study of Lavas from the North Hawaiian Arch Flood Basalt Province
北夏威夷拱洪玄武岩省熔岩的地球化学研究
  • 批准号:
    8915832
  • 财政年份:
    1990
  • 资助金额:
    $ 12.98万
  • 项目类别:
    Standard Grant

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  • 批准号:
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