ROA: Collaborative Research: Simulation of Metamorphism Near Plutons in the Middle Crust: An Approach Combining 3-D Thermal Models and Forward Models of Metamorphic Textures

ROA：合作研究：中地壳岩体附近变质作用的模拟：结合 3-D 热模型和变质纹理正演模型的方法

• 批准号: 9814418
• 负责人: Barbara Dutrow
• 金额: $ 7.3万
• 依托单位: Louisiana State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-03-15 至 2002-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9814418&HistoricalAwards=false
• 关键词: ROA; Collaborative; Research; Simulation; Metamorphism

9814418DutrowThis project utilizes an innovative approach linking sophisticated 3-D thermal modeling of intruding plutons with textural modeling studies of metamorphic rocks in order to provide a new tool to investigate the processes that control pressure and temperature in mountain belts. The study will use quantitative models to interpret rock textures on a regional scale in northwest Maine as they relate to detailed aspects of the pressure-temperature-fluid flow history around intrusions that were emplaced in the middle crust during Devonian time. This work will allow refinement of thermal histories of metamorphic events in northwest Maine, permit interpretation of subtle lateral variations in mineral textures related to variations in metamorphic conditions, and illustrate how reaction mechanisms progress in different parts of a metamorphic belt due to different pressure-temperature-fluid scenarios. The general approach is applicable to an extremely broad range of metamorphic studies because unraveling metamorphic textures and linking them to a specific thermal field has the potential to provide critical insight into the development of many metamorphic systems. This project is collaborative research between B. L. Dutrow at L.S.U. and C. T. Foster at the University of Iowa. Dutrow is responsible for the thermal modeling studies and geothermobarometric determinations of pelitic rocks from the study area; Foster is responsible for documentation of textures in rocks from the study area and construction of thermodynamic and kinetic models to link them to the thermal models.

9814418Dutrow 该项目采用创新方法，将侵入岩体的复杂 3D 热模型与变质岩的结构模型研究联系起来，以便提供一种新工具来研究控制山区压力和温度的过程。 该研究将使用定量模型来解释缅因州西北部区域范围内的岩石结构，因为它们与泥盆纪时期中地壳侵入体周围的压力-温度-流体流动历史的详细方面有关。 这项工作将能够细化缅因州西北部变质事件的热历史，允许解释与变质条件变化相关的矿物结构的细微横向变化，并说明反应机制如何因不同的压力-温度而在变质带的不同部分中进行。 - 流动的场景。 一般方法适用于极其广泛的变质研究，因为解开变质结构并将其与特定的热场联系起来有可能为许多变质系统的发展提供重要的见解。 该项目是 L.S.U. 的 B. L. Dutrow 之间的合作研究。和爱荷华大学的 C. T. Foster。 Dutrow 负责研究区域泥质岩的热模拟研究和地温气压测定；福斯特负责记录研究区域岩石的纹理，并构建热力学和动力学模型，将它们与热模型联系起来。