Life Cycles of Basaltic Magma Mushes: The Dynamic Controls on Unlocking and Mixing
玄武岩浆糊的生命周期:解锁和混合的动态控制
基本信息
- 批准号:1447266
- 负责人:
- 金额:$ 32.51万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:2015
- 资助国家:美国
- 起止时间:2015-04-15 至 2019-03-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The transport of heat and mass from the Earth's deep interior to the surface by magmatism (volcanism) creates the Earth's crust and strongly conditions the atmosphere and biosphere. However the processes are almost entirely unseen, and the dynamics must be inferred from sparse observations. These observations have converged on a picture for magma systems such that they exist in a mushy, or crystal-rich and quasi-static, state for much of their thermal lifetime. This has been documented in a variety of geological environments from ocean islands and large igneous provinces, to convergent margin volcanic chains, to mid-ocean ridge systems.Paradoxically, it has also been confirmed that these mushes can be rapidly mobilized and complexly mixed, sometimes just prior to eruption. And when the crystal mushes are preserved as large plutonic bodies, they display evidence of complex fluid and granular rheological regimes that co-existed simultaneously. Our aim is to identify the fundamental dynamic templates that produce these reoccurring processes in Nature. We will do this by employing the unification of crystal-chemical data and novel computational fluid dynamics modeling tools to reveal the templates which control of emergence of and character of distinct magmatic episodes. Our field area will be the 1868 lava flows of Mauna Loa, Hawaii, where we will identify distinct populations of magmatic products, and by utilizing the discrete element method computational fluid dynamics approach we can create synthetic populations and identify what the dynamic controls are on their occurance.
岩浆作用(火山作用)将热量和物质从地球内部深处输送到地表,形成了地壳,并强烈地影响着大气和生物圈。然而,这些过程几乎完全看不见,必须从稀疏的观测中推断出动态。这些观测结果集中在一幅岩浆系统的图片上,它们在热寿命的大部分时间里都以糊状或富含晶体和准静态的状态存在。从海洋岛屿和大型火成岩省到会聚边缘火山链,再到大洋中脊系统,各种地质环境都有这种现象的记录。奇怪的是,也已经证实,这些火山泥可以迅速移动并复杂混合,有时就在喷发之前。当晶体泥作为大的深成体保存下来时,它们显示出同时存在的复杂的流体和颗粒流变状态的证据。我们的目标是确定在自然界中产生这些重复过程的基本动态模板。我们将采用统一的晶体化学数据和新的计算流体动力学建模工具,以揭示控制不同岩浆幕的出现和特征的模板。我们的领域领域将是1868年的莫纳罗亚火山,夏威夷,在那里我们将确定不同的人口的岩浆产品,并利用离散元方法计算流体动力学的方法,我们可以创建合成人口,并确定什么样的动态控制是对他们的发生。
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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George Bergantz其他文献
George Bergantz的其他文献
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{{ truncateString('George Bergantz', 18)}}的其他基金
On the physics of crystal-rich mush
富含晶体糊状物的物理原理
- 批准号:
1950113 - 财政年份:2020
- 资助金额:
$ 32.51万 - 项目类别:
Standard Grant
SI2-SSI:Collaborative Research: ENKI: Software Infrastructure that ENables Knowledge Integration for Modeling Coupled Geochemical and Geodynamical Processes
SI2-SSI:协作研究:ENKI:支持知识集成以建模耦合地球化学和地球动力学过程的软件基础设施
- 批准号:
1549970 - 财政年份:2016
- 资助金额:
$ 32.51万 - 项目类别:
Standard Grant
Establishing the Time and Length Scales of Initial Arc Construction: The Mantle-crust Connection
建立初始弧构造的时间和长度尺度:地幔-地壳连接
- 批准号:
1049884 - 财政年份:2011
- 资助金额:
$ 32.51万 - 项目类别:
Standard Grant
Collaborative Research: Understanding the Dynamics of Magmatic Processes in the Crust: A Case Study of Volcán Quizapu, Chile
合作研究:了解地壳中岩浆过程的动力学:以智利 Quizapu 火山为例
- 批准号:
0711551 - 财政年份:2007
- 资助金额:
$ 32.51万 - 项目类别:
Continuing Grant
Integrating Computational Volcanology With Natural Deposits: An Investigation of Over-Water and Over-Land Volcanic Transport of the Kos Plateau Tuff
将计算火山学与自然沉积相结合:科斯高原凝灰岩水上和陆上火山迁移的调查
- 批准号:
0440391 - 财政年份:2005
- 资助金额:
$ 32.51万 - 项目类别:
Standard Grant
Support for Penrose Conference on Dynamics of Silicic Systems
支持彭罗斯硅系统动力学会议
- 批准号:
0104771 - 财政年份:2001
- 资助金额:
$ 32.51万 - 项目类别:
Standard Grant
Using Spatial Coherency of Crystal Zoning to Reveal Residence Time and Mixing Regimes in Calc-Alkaline Plutons
利用晶体分区的空间相干性揭示钙碱性岩体中的停留时间和混合机制
- 批准号:
0106441 - 财政年份:2001
- 资助金额:
$ 32.51万 - 项目类别:
Standard Grant
Multiphase Modeling of Solidification and the Dynamics of Magma Chambers
凝固的多相模拟和岩浆室的动力学
- 批准号:
9805336 - 财政年份:1998
- 资助金额:
$ 32.51万 - 项目类别:
Standard Grant
The Generation and Mobilization of Dehydration Melts: The Formation of Migmatites, Plutons and Mixed Magmas
脱水熔体的生成和流动:混合岩、岩体和混合岩浆的形成
- 批准号:
9508291 - 财政年份:1995
- 资助金额:
$ 32.51万 - 项目类别:
Standard Grant
Underplating and Partial Melting: Implications for Magma Generation and Extraction
底镀和部分熔融:对岩浆生成和提取的影响
- 批准号:
9019217 - 财政年份:1991
- 资助金额:
$ 32.51万 - 项目类别:
Standard Grant
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