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，即岩石与流体相互作用的化学转化，最近得到了科学界更多的关注，因为越来越多的地球科学家意识到，自至少40亿年前以来，它就是一个重要的过程，参与了地壳的形成和矿床的形成。尽管交代作用在所有岩石类型中都已被认识到，并有助于某些类型的金属矿床的成因，但人们对它的了解仍然很少。例如，虽然已经详细研究了加拿大地盾建造过程中变质作用和岩浆作用的影响，但从未充分评估交代作用对这些岩石演化的影响。在这里，我建议研究与加拿大安大略省和魁北克省的瓦瓦-阿比提比地体、瓦比贡地体和卡普斯卡辛构造内的加拿大地盾某些部分的岩浆演化有关的交代作用。 更好地了解加拿大地盾拼装过程中交代作用的影响，对于我们理解地壳的形成和演化，以及理解其所赋存的重要金矿床的成因具有重要意义。这项研究将产生的新知识和见解将对于一般地球科学家，更具体地说对于试图了解大陆如何形成并勘探金属矿床的地质学家，将地质信息纳入公众地图的物理地理学家，研究岩石如何形成并在高中、大学和大学教授岩石的岩石学家，以及对洋壳如何俯冲到大陆之下以及大陆如何碰撞以陶冶山脉的构造地质学家和地球物理学家来说都是重要的。简而言之，这项研究将使我们更好地了解加拿大盾是如何形成的，以及最终大陆是如何形成的。 这项研究也将使采矿业和加拿大经济受益。这项研究的很大一部分将致力于提高我们对金矿形成的了解，这些金矿对我们的经济和区域劳动力来说是如此重要。将在这里开发的新勘探工具将帮助勘探行业转向新的金矿，这将刺激经济并为加拿大人创造新的就业机会。最后，这项研究计划将为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.