10:45 〜 12:15 [SVC29-P11] The magmatic system beneath maar complex revealed from the geochemistry of ash particles at Lamongan Volcanic Field (LVF), East Java, Indonesia<quillbot-extension-portal></quillbot-extension-portal> *Andriansyah Gurusinga1、Tsukasa Ohba1、Takashi Hoshide1 (1.Akita University)