Arctic Volcanism in Woodfjorden: Fundamental magneto-mineralogical data for magnetic modeling and estimation of emplacement conditions of Quaternary volcanic rocks

在斯瓦尔巴大学中心和挪威北极地质部门组织的“Woodfjorden的北极火山作用：地球动力学意义（WOODVOLC）”项目中，将通过岩石学、地质/遥感和地幔捕虏体中流体、火山玻璃和橄榄石中的稀有气体地球化学来研究斯匹次伯尔根西北Woodfjorden地区的两个火山单元（Seidfjellet组中新世玄武岩和Bockfjorden第四纪火山群）。火山构造的野外采样和制图以及岩石磁学和磁矿物学调查被设想为拟议研究项目的一部分，这可以为磁建模和火山岩单元的就位条件提供基础数据。这些数据将有助于更好地了解形成这些岩石的岩浆起源和火山作用。这对于更好地了解斯匹次卑尔根岛及其陆上地质的近期地质演变非常重要。我们的结果将与其他工作组的结果以及DFG项目“从Eger -diatreme （ICDP-EGER钻探点S4）和Eifel火山的磁性推断火山碎屑沉积的就位条件”中获得的中欧碱性火山沉积的结果进行比较。

Within the project “Arctic Volcanism in Woodfjorden: geodynamic implications (WOODVOLC)” organized by the University Centre in Svalbard and the Department of Arctic Geology, Norway, two volcanic units in the Woodfjorden area NW of Spitsbergen (Miocene-aged basalts of the Seidfjellet Formation and the Quaternary Volcanic Complex of Bockfjorden) will be investigated by petrography, geology/remote sensing, and noble gas geochemistry in fluids, volcanic glass and olivine from mantle xenoliths. Field sampling and mapping of the volcanic structures along with rock magnetic and magneto-mineralogical surveys are envisaged as part of the proposed research project, which can provide fundamental data for magnetic modeling and the emplacement conditions of the volcanic rock units. These data will help better understand the magmatic origin and volcanism that formed these rocks. This is important for a better understanding of the recent geological evolution of Spitsbergen and its onshore geology. Our results will be compared with those of the other working groups and those of alkaline volcanic deposits of Central Europe obtained within the DFG project “Emplacement conditions of pyroclastic deposits inferred from magnetic properties of the Eger maar-diatreme (ICDP-EGER drill site S4) and Eifel volcanoes”.