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

在由斯瓦尔巴群岛大学中心和挪威北极地质系组织的“伍德夫约登的北极火山作用：地球动力学影响(WOODVOLC)”项目中，将对斯皮茨卑尔根西北伍德福约登地区的两个火山单元(塞德菲耶莱组中新世玄武岩和博克约登第四纪火山杂岩)进行岩石学、地质/遥感和地幔包体流体、火山玻璃和橄榄石中的惰性气体地球化学研究。作为拟议研究项目的一部分，设想对火山构造进行现场采样和测绘，并进行岩石磁学和磁矿物学调查，这可以为磁学模拟和火山岩单元的侵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来源和火山作用。这对于更好地了解斯皮茨卑尔根的近期地质演化及其陆上地质具有重要意义。我们的结果将与其他工作组的结果以及在DFG项目“从Eger maardiatreme(ICDP-Eger钻探地点S4)和Eifel火山的磁性推断的火山碎屑矿床的侵位条件”中获得的中欧碱性火山矿床的结果进行比较。

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”.