Density and magnetic susceptibility measurements on Archean rocks, northwestern Minnesota, 2021

Rock physical property measurements were collected on core samples to help understand the causative sources of gravity and magnetic survey anomalies in northwestern Minnesota. A total of 410 measurements of magnetic susceptibility and density on Archean core samples from 20 boreholes have been conducted. The measurements aid in interpretation of gravity and airborne magnetic data that are helping to understand Archean geology and potential mineral resources. Sample locations were determined from published borehole information (Jirsa and Boerboom, 1993). All cores sampled are stored by the Minnesota Department of Natural Resources core facility in Hibbing, MN. Additional geologic information on the cores is presented by Jirsa and Boerboom (1993).

Jirsa, M. A., and Boerboom, T. J., 1993, Scientific and exploration drilling in northwestern Minnesota: Minnesota Geological Survey Information Circular 40, 96 p., https://hdl.handle.net/11299/59401.

本数据集通过岩心样品采集岩石物性测量数据，旨在探明美国明尼苏达州西北部重力与磁法测量异常的成因来源。本次研究共完成了采自20个钻孔的太古宙（Archean）岩心样品的410组磁化率与密度物性测量，上述测量结果可为重力与航空磁法数据的解译提供依据，助力太古宙地质特征与潜在矿产资源的研究工作。
样品的空间位置依据已发表的钻孔资料（Jirsa与Boerboom，1993）确定。所有采集的岩心均由明尼苏达州自然资源部位于希宾的岩心库保存。关于这批岩心的补充地质资料详见Jirsa与Boerboom（1993）的研究成果。

Jirsa, M. A. 与Boerboom, T. J.，1993年，《明尼苏达州西北部科学与勘探钻探》：明尼苏达地质调查局信息通报第40号，共96页，公开链接：https://hdl.handle.net/11299/59401.