An Experimental Study of Coupling between Stress-Driven and Reaction-Driven Melt Migration in Mantle Rocks

地幔岩石中应力驱动与反应驱动熔体运移耦合的实验研究

• 批准号: 1060983
• 负责人: David Kohlstedt
• 金额: $ 37.15万
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-03-15 至 2016-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1060983&HistoricalAwards=false
• 关键词: Experimental; Study; Coupling; between; Stress

Volcanism is one of several important processes that form and shape the surface of the Earth. Melts that are erupted from explosive volcanoes such as Pinatubo or Mt Saint Helens, and from the vast system of mid-ocean ridges. Lavas erupted at the surface are known to originate from the Earth?s mantle as partial melts, i.e., small fractions of melt in mostly solid rock, but how melts move through the host solid is poorly understood. Melts are thought to be driven by both stress (pressure) and chemical reactions, and this experimental study has the aim of investigating how these two processes interact to channelize and transport melts at high temperatures and pressures. In addition to contributing to our understanding of fundamental processes, broader impacts of this study include research experience for undergraduates, training for a graduate student, and development of new experimental techniques

火山作用是形成和塑造地球表面的几个重要过程之一。从皮纳图博或圣海伦斯山等火山爆发，以及从浩瀚的大洋中脊系统喷发的熔岩。在地表喷发的熔岩已知起源于地球？S地幔作为部分熔体，即主要是固体岩石中的一小部分熔体，但熔体如何通过宿主固体流动却知之甚少。熔体被认为是由应力(压力)和化学反应驱动的，这项实验研究的目的是研究这两个过程如何相互作用，在高温和高压下使熔体通道化和输送。除了有助于我们对基本过程的理解，这项研究的更广泛的影响还包括本科生的研究经验，研究生的培训，以及新实验技术的发展。