Replication Data for: Separating geometry- from stress-induced remanent magnetization in magnetite with ilmenite lamellae from the Stardalur basalts, Iceland

Bulk rock magnetic measurements (hysteresis loops, backfield curves and FORC diagrams) were done on basalts from the Stardalur volcano. Realistic geometries of magnetite grains from those basalts were obtained by FIB-SEM nanotomography. Meshes of these geometries were used to create micromagnetic models. The magnetic properties of these grains were modeled using the three dimensional micromagnetic code MERRILL and the influence of grain shape and size were isolated by modeling hysteresis loops. Comparing the modeled hysteresis loops with measured bulk hysteresis loops allows for quantification of internal stress in these grains. This dataset includes the meshes used to do the micromagnetic modeling, the resulting hysteresis loop data, and the raw data files for the rock magnetic measurements.

对Stardalur火山的玄武岩开展了全岩磁学测量（包括磁滞回线、反向场曲线及一阶反转曲线（FORC）图）。通过聚焦离子束-扫描电子显微镜（FIB-SEM）纳米断层扫描技术，获取了这些玄武岩中磁铁矿颗粒的真实几何形态。利用这些几何形态的网格构建微磁模型，并采用三维微磁代码MERRILL对颗粒的磁学性质进行建模；通过模拟磁滞回线，分离出颗粒形状与尺寸的影响。将模拟磁滞回线与实测全岩磁滞回线对比，可量化这些颗粒内部的应力。该数据集包含用于微磁建模的网格、模拟得到的磁滞回线数据，以及全岩磁学测量的原始数据文件。