Early Magmatic Evolution of the East Greenland Volcanic Rifted Margin

9706677 古新世晚期至始新世早期北大西洋地区盘古大陆超大陆的 Lesher 分裂与广泛的火山活动和北大西洋大型火成岩省 (NA-LIP) 的形成有关。 该项目的目的是对沿东格陵兰岛中部布洛斯维尔海岸暴露的火山省的地下部分建立高分辨率岩石学和地球化学地层学。 新的成分地层学将跨越大陆裂谷时期和 NA-LIP 海底扩张的开始阶段。 这项研究的结果将为羽流引发的大陆破裂和大陆向海洋转变的地壳结构模型提供约束，并将增加我们对岩浆成因、地壳演化以及 LIP 侵位过程中火山与构造活动之间相互作用的理解。 本研究采用的方法包括光学和电子显微镜、X 射线荧光光谱法、电感耦合等离子体质谱法和固体源质谱法。

9706677 Lesher Breakup of the supercontinent Pangaea in the North Atlantic region during late Paleocene-early Eocene time was associated with widespread volcanism and formation of the North Atlantic Large Igneous Province (NA-LIP). The aim of this project is to establish a high resolution petrographic and geochemical stratigraphy of subaerial portions of this volcanic province exposed along the Blosseville Coast of central East Greenland. The new compositional stratigraphy will span the period of continental rifting and the start of seafloor spreading in the NA-LIP. The results of this study will provide constraints for models of plume-initiated continental breakup and crustal architecture of the continent to ocean transition, and will increase our understanding of magma genesis, crustal evolution and the interplay between volcanic and tectonic activity during the emplacement of LIPs. Methods to be employed in this study include optical and electron microscopy, X-ray fluorescence spectrometry, inductively coupled plasma mass spectrometry, and solid-source mass spectrometry.