Magnetic susceptibility measurements on hydrothermally altered rocks in the Silverton caldera, southwest Colorado

The U.S. Geological Survey (USGS) collected magnetic susceptibility measurements on rock outcrops to help understand causative sources of magnetic survey anomalies in...美国地质调查局（U.S. Geological Survey, USGS）对岩石露头开展了磁化率测量工作，以助力解析磁测异常的成因来源……