K2O 含有量によるマグマ留り体積の推定
1970 年 15 巻 2 号 p. 55-60
詳細
1970 年 15 巻 2 号 p. 55-60
An attempt is made in this paper to estimate the volume of magma in primary stage of volcanic activity as a function of content of K2O in a differentiating residual magma. In the test it is found that present method of volumetry (equation (1)) seems applicable in case of Usu Volcano in Hokkaido, Japan.
