[S-EM20] [JJ] Geomagnetism, Paleomagneteism and Rock Magnetism

[SEM20-P07] Rock magnetic properties of single grains extracted from fall-out tephra deposits in western Kochi

*Hiromi Takeda¹, Yuhji Yamamoto², Masahiko Sato³ (1.Graduate school of Integrated Arts and Sciences, Kochi University, 2.Center for Advanced Marine Core Research, Kochi University, 3.Geological Survey of Japan, AIST)

There are many widespread tephra around Japan. In usual paleomagnetic and rock magnetic studies, analyses are typically made on an assemblage of tephra grains to investigate macroscopic remanent magnetizations. In this study we have extracted single grains from fall-out tephra deposits taken from an outcrop in western Kochi, and performed paleomagnetic and rock magnetic measurements on the grains. We will report these results.