Distribution of Pyroclastic Deposits around Lake Maninjau Agam District, West Sumatera, Indonesia based on Magnetic Susceptibility

Lake Maninjau is an erupting volcano in West Sumatra Province. The results of the eruption have now settled various places and scattered all directions due to transportation process. process transporting volcanic material caused by several factors such as wind rain. This study aims analyze distribution pattern that around Maninjau, Agam Regency. We 25 types samples divided into 3 categories. There are pumice, lava, ash. research was conducted at FMIPA UNP Laboratory using rock magnetization method. In this study, a Bartington MS2 with MS2B sensor used calculating magnetic susceptibility value based on mass sample. analysis obtained varied between 74.7×10-8 - 3956.7×10-8 m3/kg which included ilmenite (FeTiO3) group. highest vulnerability 2800×10-8 4000×10-8 found core ± 5.0 km seen from green contour map. lowest values ​​0 800×10-8 were western part deposited distance 13 caldera. Deposits also eastern 22.4 Middle East 23 miles white color represents 1600 2000×10-8 moderate value, 4 southeast benefit can be taken ink industry presence mineral map suseptibility ​​and makes it easier find raw materials for making Maninjau.
 HIGHLIGHTS
 
 stores elements contained released material. make up minerals Fe, Si, Ca, Al, K, Ti. collection forms mineral
 Volcanic contains theory TiO2 pigments, ferrous metals chemical compounds containing iron. industrial field widely paint pigment, additives paper-making process, ceramic materials, pharmaceutical photoclinic materials
 Superparamagnetic present resulting eruption, sensibility high frequencies slightly lower than low frequencies. If there no superparamagnetic (SP)
 It assumed ancient eruptions belong type plinia highly exposed magma viscosity or acid magma, composition andesitic rhyolitic
 GRAPHICAL ABSTRACT