Pure and applied problems in metamorphic geology

变质岩石学研究的是岩石的矿物学和结构在地壳的埋藏和加热作用下的变化。阅读变质岩的记录提供了独特而重要的信息，使地球科学家能够解开地壳从45亿年前开始的演化过程，并拼凑出地球板块相互作用的复杂历史。******我的研究计划的长期目标是在变质岩石学的理论和技术方面取得前沿进展，并将其与相关技术相结合，以解决地球科学中更广泛的问题，特别是与地球造山带（山）带演化有关的问题。这个为期五年的研究项目有两个目标：设计创新的新技术来解决平衡（热力学）和动力学（机制和反应速率）之间的相互作用，以控制变质矿物组合的发展；和* * * 2。以世界著名的加拿大科迪勒拉山脉为研究重点，通过研究山带深层“根部”的过程，应用这些新知识来填补我们对山带形成方式的理解空白。******关于第一个目标，子目标包括：（1-1）调和热力学预测的矿物组合与其在良好约束的自然环境中的产状之间的不完美匹配，这是变质岩石学的一级目标之一；（1-2）识别和量化反应的动力学障碍对变质矿物组合和结构发育的影响程度。后者是变质岩石学中最具活力的新研究领域之一，因为它挑战了长期以来认为变质过程发生在接近平衡状态的观点。******关于第二个目标，子目标包括：（2-1）揭示不列颠哥伦比亚省东南部东南部Omineca带的复杂埋葬、加热和挖掘历史，这是加拿大科迪勒拉核心的一个深度侵蚀区域，在数百万年前海洋火山地形与北美古代边缘的碰撞中发展起来的；（2-2）解决了加拿大东南部科迪勒拉演化中突出的构造谜题之一，即两大山带域（Purcell背斜和Kootenay Arc）在埋藏和热历史上的显著差异。******上述项目将为新一代地球科学家的教育提供极好的机会，为他们提供在学术界，政府和工业界高度重视的观察，分析，计算，解释和沟通技能。

Metamorphic petrology is concerned with changes in the mineralogy and textures of rocks in response to burial and heating in the Earth's crust. Reading the record of metamorphic rocks provides unique and essential information that allows geoscientists to unravel the evolution of Earth's crust from its inception 4.5-odd billion years ago, and to piece together the complex history of Earth's plate interactions through time.******The long-range objectives of my research program are to make cutting-edge advances in the theory and techniques of metamorphic petrology, and to apply these in concert with allied techniques to solve broader problems in Earth Science, especially those related to the evolution of Earth's orogenic (mountain) belts. The objectives of this five year research program are two-fold:***1. to devise innovative new techniques to address the interplay between equilibrium (thermodynamics) and kinetics (mechanisms and rates of reaction) in controlling metamorphic mineral assemblage development; and***2. to apply this new knowledge to fill gaps in our understanding of how mountain belts form by examining processes that occur in the deep “roots” of mountain belts, focusing on the world-famous Canadian Cordillera. ******Concerning the first objective, sub-objectives include: (1-1) reconciling the imperfect match between thermodynamically predicted mineral assemblages and their occurrence in well-constrained natural settings, one of the first-order goals of metamorphic petrology; and (1-2) recognizing and quantifying the extent to which kinetic impediments to reaction influence the development of metamorphic mineral assemblages and textures. The latter is one of the most vibrant new research areas in metamorphic petrology because it challenges the long-held view that metamorphic processes happen close to equilibrium.******Concerning the second objective, sub-objectives include: (2-1) unravelling the complex history of burial, heating and exhumation of the southeastern Omineca belt of southeastern British Columbia, a deeply eroded domain in the core of the Canadian Cordillera that developed in response to the collision of oceanic volcanic terrains with the ancient margin of North America millions of years ago; and (2-2) solving one of the outstanding tectonic puzzles in the evolution of southeastern Canadian Cordillera, namely the marked contrast in burial and thermal history between two major domains of the mountain belt (Purcell Anticlinorium and Kootenay Arc).******The above projects will provide excellent opportunities for the education of the new generation of geoscientists, providing them with observational, analytical, computational, interpretational and communication skills that are highly valued in academia, government and industry.