Multidisciplinary Studies of the High Arctic Strand Fiord Large Igneous Province

这是一个基于主要研究者以前的发现的更新授权，这些发现集中在晚白垩世火山岩和沉积岩，保存在埃尔斯米尔岛北部的几个盆地中，这些盆地在空间上与斯特兰德峡湾大火成岩省（LIP）有关。 初步数据表明，玄武岩是在反极性33R或更年轻的年代，不到8300万年前侵位的。因此，这些岩石提供了一个理想的机会，以进一步研究地磁场的演变（通过比较高纬度的记录，从熔岩喷发期间和年轻于白垩纪正常极性超时），并了解的地球动力学意义的滨海湾LIP（特别是相对于羽状和非羽状模型的形成）。与这些岩石相关的浅海到陆地沉积物也是保存气候敏感化石的理想场所，他们希望继续研究。拟议的工作将支持博士生和本科生。 每个野外季节通常有四到六名本科生参加野外工作。这些学生中的许多人将继续在实验室中分析样品，作为独立研究项目的一部分，并作为本科毕业论文的一部分。

ABSTRACT TardunoOPP-0241033This is a renewal grant based on the Principal Investigator's previous findings which focused on Late Cretaceous volcanic and sedimentary rocks, preserved in several basins on north Ellesmere Island that are spatially associated with the Strand Fiord Large Igneous Province (LIP). Preliminary data demonstrate that the basalts were emplaced during reversed polarity chron 33R or younger, less than 83 million years ago. Hence, these rocks provide an ideal opportunity to further examine the evolution of the geomagnetic field (through comparisons of high latitude records from lavas erupted during and younger than the Cretaceous Normal Polarity Superchron), and to understand the geodynamic significance of the Strand Fiord LIP (especially with respect to plume and nonplume models of formation). The shallow marine to terrestrial sediments associated with these rocks is also ideal for preserving climatically sensitivefossils, which they hope to continue to investigate. The proposed work will support a PhD student and undergraduate students. Four to six undergraduates per field season typically take part in the field work. Many of these students will continue analyses of samples in the laboratory as part of independent study projects and as part of undergraduate senior theses.