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引用次数: 0
摘要
本特刊结合了来自众多研究古元古代构造的学术机构的跨学科小组的成果,以破译西非克拉通(WAC)主要矿化资源的起源及其对非洲经济发展的影响。构造、地球物理、沉积学、地层学、地球化学、岩石物理和矿物学分析已被用来强调矿化侵位及其在WAC内的起源和演化的复杂性。14篇文章贡献了矿物研究的新知识。它们表明,WAC的地球动力学演化是复杂的,在briimian (2.3-2.0 Ga)到pan - africa (650-450 Ma)的几个变形阶段,WAC经历了俯冲、碰撞和逆冲。各种建模技术综合起来,有助于理解矿化侵位的机制,其中一些仍然是一个有争议的问题。进一步研究面临的挑战是,可以适当地利用减轻影响促进可持续发展,以尽量减少这种损害。
About this title - Mineralization and Sustainable Development in the West African Craton: From Field Observations to Modelling
This Special Publication combines results obtained by interdisciplinary groups from numerous academic institutions working on Paleoproterozoic formations to decipher the origins of the main mineralization resources in the West African Craton (WAC) and their impacts on African economic development. Structural, geophysical, sedimentological, stratigraphical, geochemical, petrophysical and mineralogical analyses have been used to highlight the complexities involved in mineralization emplacement and its origin and evolution within the WAC. Fourteen articles contribute to new knowledge in mineral research. They show that the geodynamic evolution of the WAC is complex from one area to another: it involves subduction, collision and obduction during several deformation phases ranging from Birimian (2.3–2.0 Ga) to Pan-African (650–450 Ma) events. Various modelling techniques, when integrated, help in understanding the mechanisms of mineralization emplacement, some of which are still a matter of debate. The challenge for further studies is mitigation for sustainable development that can be appropriately used to minimize such damage.