Collaborative Research: Flood Basalt Magma Genesis and Dynamics: Application of Crystal Isotope Stratigraphy and Igneous Componentry to the Columbia River Basalt Group
合作研究:溢流玄武岩岩浆成因和动力学:晶体同位素地层学和火成岩成分在哥伦比亚河玄武岩群中的应用
基本信息
- 批准号:0440336
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:2005
- 资助国家:美国
- 起止时间:2005-01-01 至 2008-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Continental flood basalts are the products of events in which very large volumes of magma (105 - 107 km3) are erupted in geologically short periods of time (=106 years). Although there is widespread agreement that rising deep-rooted mantle plumes provide the heat source for such intense volcanism, other mantle and crustal rocks may melt under the thermal impact of the plume to contribute some, perhaps most, of the total erupted mass of flood basalt. Assessing the relative contributions of magma from these different sources to continental flood basalt lavas is a long-standing problem. This project will apply modern approaches of small-scale sampling, targeting key geochemical tracers (chiefly isotope ratios) within and between single crystals and basalt matrix, to the Columbia River flood basalts. Because this approach is based on rock textures that grow sequentially, this research will enable reconstruction of how and in what order the magmas were assembled from different sources. In addition, residence times of crystals in their host magmas can be obtained by diffusion modeling of spatial variations in isotope abundance ratios in crystals, allowing constraints to be placed on the durations of individual eruptions, which is an important parameter in assessing the potential these events have for global climate and ecological disruption. Over the next few years, the techniques to be employed will enter the mainstream of geochemical investigations into volcanism, and training research students to meet this need is a further benefit of the project.
大陆溢流玄武岩是大量岩浆(105 - 107 km3)在地质短时间内(= 106 年)喷发的产物。 尽管人们普遍认为上升的深根地幔羽流为如此强烈的火山活动提供了热源,但其他地幔和地壳岩石可能在羽流的热影响下融化,从而贡献了喷发玄武岩总喷发质量的一部分(也许是大部分) 。 评估这些不同来源的岩浆对大陆洪水玄武岩熔岩的相对贡献是一个长期存在的问题。 该项目将采用现代小规模采样方法,针对哥伦比亚河溢流玄武岩内部和单晶和玄武岩基质之间的关键地球化学示踪剂(主要是同位素比)。 由于这种方法基于顺序生长的岩石纹理,因此这项研究将能够重建不同来源的岩浆是如何以及以什么顺序聚集的。此外,晶体在其宿主岩浆中的停留时间可以通过晶体中同位素丰度比的空间变化的扩散建模来获得,从而可以对单个喷发的持续时间进行限制,这是评估这些事件潜在可能性的重要参数造成全球气候和生态破坏。 在接下来的几年中,所采用的技术将进入火山地球化学研究的主流,而培训研究生以满足这一需求是该项目的另一个好处。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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John Wolff其他文献
Nosocomial outbreak due to Enterococcus faecium highly resistant to vancomycin, penicillin, and gentamicin.
因粪肠球菌对万古霉素、青霉素和庆大霉素高度耐药而引起的院内暴发。
- DOI:
10.1093/clind/16.6.750 - 发表时间:
1993-06-01 - 期刊:
- 影响因子:0
- 作者:
S. Handwerger;S. Handwerger;B. Raucher;B. Raucher;D. Altarac;D. Altarac;Jean Monka;Jean Monka;S. Marchione;S. Marchione;Kavindra V. Singh;B. Murray;John Wolff;John Wolff;B. Walters;B. Walters - 通讯作者:
B. Walters
Multiplex isothermal helicase-dependent amplification assay for detection of Chlamydia trachomatis and Neisseria gonorrhoeae.
用于检测沙眼衣原体和淋病奈瑟菌的多重等温解旋酶依赖性扩增测定。
- DOI:
10.1016/j.diagmicrobio.2011.08.021 - 发表时间:
2011-12-01 - 期刊:
- 影响因子:2.9
- 作者:
V. Doseeva;Thomas A. Forbes;John Wolff;Y. Khripin;Dominic O'Neil;T. Rothmann;I. Nazarenko - 通讯作者:
I. Nazarenko
John Wolff的其他文献
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{{ truncateString('John Wolff', 18)}}的其他基金
Collaborative Research: Testing competing models for the origin and magma transport dynamics of the Columbia River LIP
合作研究:测试哥伦比亚河 LIP 的起源和岩浆输送动力学的竞争模型
- 批准号:
1946545 - 财政年份:2020
- 资助金额:
-- - 项目类别:
Standard Grant
Acquisition of an X-ray Fluorescence Spectrometer
购买 X 射线荧光光谱仪
- 批准号:
1539662 - 财政年份:2016
- 资助金额:
-- - 项目类别:
Standard Grant
Heart of Glass: Volatile Release and Petrogenesis of Columbia River Flood Basalt Lavas Through Study of Melt Inclusions and Glassy Tephra
玻璃之心:通过熔融包裹体和玻璃质火山灰研究哥伦比亚河洪水玄武岩熔岩的挥发物释放和岩石成因
- 批准号:
1427402 - 财政年份:2014
- 资助金额:
-- - 项目类别:
Continuing Grant
Generation of Large Geochemical Data Sets for Single Units of Volcanic Rock: Application of Portable XRF Spectrometry to Zoned Ignimbrites
生成单个火山岩单元的大型地球化学数据集:便携式 XRF 光谱测量在分区熔凝灰岩中的应用
- 批准号:
1145127 - 财政年份:2012
- 资助金额:
-- - 项目类别:
Standard Grant
Collaborative Research: Using Trace and Ore Elements to Track Volatile Behavior and Fluid Migration within Intermediate-silicic Magma Chambers
合作研究:利用痕量元素和矿石元素追踪中硅质岩浆室内的挥发行为和流体运移
- 批准号:
1219480 - 财政年份:2012
- 资助金额:
-- - 项目类别:
Standard Grant
Super-eruptions, Eruptive Centers and Time-volume Behavior of a Continental Hotspot: The Central Snake River Plain
大陆热点的超级喷发、喷发中心和时间体积行为:中央蛇河平原
- 批准号:
0911457 - 财政年份:2009
- 资助金额:
-- - 项目类别:
Standard Grant
Collaborative Research: Caldera Collapse and Subsequent Evolution of Long-lived Silicic Supervolcanoes: A Case Study of the Tshirege Member, Bandelier Tuff, NM
合作研究:火山口塌陷和长寿硅质超级火山的后续演化:新墨西哥州班德利尔凝灰岩 Tshirege 部分的案例研究
- 批准号:
0810306 - 财政年份:2009
- 资助金额:
-- - 项目类别:
Continuing Grant
Acquisition of an inductively-coupled plasma mass spectrometer
购置电感耦合等离子体质谱仪
- 批准号:
0930021 - 财政年份:2009
- 资助金额:
-- - 项目类别:
Standard Grant
Collaborative Research: Storage Duration of Giant Plagioclase Basalts, Deccan Traps, India
合作研究:印度德干圈闭巨型斜长石玄武岩的储存持续时间
- 批准号:
0538254 - 财政年份:2006
- 资助金额:
-- - 项目类别:
Standard Grant
Origin of Very Voluminous, Strongly 18-O Depleted, High-Temperature Rhyolites of the Snake River Plain
蛇河平原大量、18O 严重耗尽的高温流纹岩的起源
- 批准号:
0610081 - 财政年份:2006
- 资助金额:
-- - 项目类别:
Standard Grant
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