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

加拿大苏必利尔省瓦瓦-阿比蒂比省和西瓦比贡省的岩浆和变质岩的交代作用以及卡普斯卡辛构造：对新太古代大陆演化和金沉积的影响

• 批准号: RGPIN-2016-04417
• 负责人: Nadeau, Olivier
• 金额: $ 1.68万
• 依托单位: University of Ottawa
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=633728
• 关键词: Metasomatism; magmatic; metamorphic; rocks; Wawa

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.

由于越来越多的地球科学家认识到，至少在40亿年前，交代作用，即通过与流体相互作用而使岩石发生化学变化的过程，是一个与地壳的形成以及矿床的形成有关的重要过程，因此，交代作用最近受到了科学界越来越多的关注。虽然在所有岩石类型中都发现了交代作用，并且对某些类型的金属矿床的成因起着重要作用，但对交代作用的了解仍然很少。例如，虽然已经详细研究了加拿大地盾建造期间变质作用和岩浆作用的影响，但对这些岩石演化的交代作用的影响从未得到充分评估。在这里，我建议研究与加拿大地盾在安大略省和魁北克省的某些部分的岩浆演化有关的交代作用，在Wawa-Abitibi地体，Wabigoon地体和Kapuskasing构造中。