Metasomatism of magmatic and metamorphic rocks of the Wawa-Abitibi and Western Wabigoon Subprovinces and Kapuskasing structure, Superior Province, Canada: Implications for Neoarchean continent evolution and gold deposition

交代作用，或岩石与流体相互作用的化学转化，最近越来越受到科学界的关注，因为越来越多的地球科学家意识到这是一个重要的过程，至少从40亿年前开始，它就参与了地壳的成因以及矿床的形成。尽管交代作用在所有岩石类型中都已被认识到，并对某些类型的金属矿床的成因起着重要作用，但人们对它的认识仍然很少。例如，虽然在加拿大地盾建造过程中变质作用和岩浆作用的影响已被详细研究，但交代作用对这些岩石演化的影响从未得到充分评估。在这里，我建议研究交代作用与岩浆演化的某些部分的加拿大地盾在安大略和魁北克，在瓦瓦阿比提比岩，瓦比贡岩和Kapuskasing结构。 更好地了解加拿大地盾组合过程中交代作用的影响，对于我们理解地壳的形成和演化，以及对于我们理解它所承载的重要金矿的成因，都是至关重要的。这项研究将产生的新知识和新见解对一般地球科学家，特别是对试图了解大陆如何形成和探索金属矿床的地质学家、将地质信息纳入地图供公众使用的自然地理学家、研究岩石如何形成并在中学、学院和大学教授的岩石学家都很重要。以及对大洋地壳如何俯冲到大陆之下以及大陆如何碰撞形成山脉感兴趣的构造地质学家和地球物理学家。简而言之，这项研究将使我们更好地了解加拿大地盾是如何形成的，以及大陆最终是如何形成的。 这项研究也将有利于采矿业和加拿大经济。这项研究的一个重要部分将致力于提高我们对金矿形成的理解，这对我们的经济和区域劳动力非常重要。新的勘探工具将在这里开发，这将有助于引导勘探行业走向新的金矿，这将刺激经济，并为加拿大人创造新的就业机会。最后，这个研究项目将为HQP提供宝贵的培训机会，并为他们在学术，政府和地质行业的工作做好准备。

Metasomatism, or the chemical transformation of rocks by interaction with fluids, has recently been getting more attention from the scientific community, as more Earth scientists realize it is an important process which has been involved in the genesis of the Earth’s crust as well as in the formation of ore deposits, since at least 4 billion years ago. Although metasomatism has been recognized in all rock types, and is instrumental for the genesis of certain types of metal deposits, it remains poorly understood. For example, while the effects of metamorphism and magmatism during the construction of the Canadian Shield have been studied in detail, the effect of metasomatism on the evolution of these rocks was never fully assessed. Here, I propose to study the metasomatism associated with the magmatic evolution of certain parts of the Canadian Shield in Ontario and Quebec, within the Wawa-Abitibi terrane, the Wabigoon terrane, and the Kapuskasing structure. Gaining a better understanding of the effect of metasomatism during the assembly of the Canadian Shield is of primary importance for our comprehension of the formation and evolution of the Earth’s crust, and for our understanding of the genesis of the important gold deposits it hosts. The new knowledge and insight that will result from this research will be important to Earth scientists in general, and more specifically to geologists, who try to understand how continents form and explore metallic deposits; to physical geographers who integrate geological information into maps for the public;, to petrologists who study how rocks form and teach it in high school, college and university; and to structural geologists and geophysicists who are interested in how oceanic crusts are being subducted underneath continents and in how continents collide to edify mountain ranges. In short, this research will allow us to better understand how the Canadian Shield formed, and ultimately how continents are built. This research will also benefit the mining industry and the Canadian economy. A significant part of this research will be dedicated to improving our understanding of the formation of the gold deposits which are so important to our economy and to the regional workforce. The new exploration tools that will be developed here will help vector the exploration industry toward new gold deposits, which will stimulate the economy and create new jobs for Canadians. Finally, this research program will provide invaluable training opportunities for HQP and prepare them for jobs in the academic, government and geology industry.