Early Magmatic Evolution of the East Greenland Volcanic Rifted Margin

9706677北大西洋超大陆在古新世晚期-始新世早期的雷舍裂解与广泛的火山作用和北大西洋大火成岩省(NA-LIP)的形成有关。该项目的目的是建立沿格陵兰岛中部布洛斯维尔海岸暴露的这一火山省地面部分的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和北缘海底开始扩张的时期。这一研究结果将为大陆向海洋过渡的热柱引发的大陆裂解和地壳结构模型提供约束，并将加深我们对岩浆成因、地壳演化以及火山活动和构造活动在嘴唇侵位过程中的相互作用的理解。本研究采用的方法包括光学显微镜和电子显微镜、X射线荧光光谱、电感耦合等离子体质谱和固源质谱仪。

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.