Subject ASC0003sm8
The geological magazine, or, Monthly journal of geology.
Decade 2:v.2 (1875), Page 15 (1875)
Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
BHL Page 32504042
Keywords
diagram volcano stratification surface lava stream lava quaglia vulcano rude strata tuff upper scoria stream burnt burn red dyke section tuffs scoriaceous