Petrographic properties of tuffs of the Miocene Mizunami and Iwamura Groups, central Japan

Sasao, Eiji; Danhara, Toru*; Yamashita, Toru*; Hayashi, Joji*

Mizunamishi Kaseki Hakubutsukan Kenkyu Hokoku, (48), p.9 - 19, 2021/05

https://doi.org/10.50897/bmfm.48.0_9

Petrographic description of tuffs in the Miocene Mizunami Group has been made to offer basic data. This report includes the descriptions of 14 and 4 tuff beds in the Mizunami and Iwamura Groups, respectively. Followings are presented in this report; mineral and heavy mineral composition, shape of volcanic glass, and refractive indices of volcanic glass and plagioclase.