SEGJ Technical Conference

Correspondence between high magnetic susceptibility and low gamma ray in fault

Abstract It experimented on decrease experiment in the gamma ray where magnetic susceptibility had been assumed to be an index. As a result, the absorbed amount of the gamma ray is large, and it becomes the low gamma ray in high magnetic susceptibility. The magnetic susceptibility and gamma ray survey were executed in the active fault. In the fracture zone, the case that becomes high magnetic susceptibility and low gamma ray is the majority. The magnetic susceptibility increase by the fine grain accompanied by stratum crushing is thought.