Subject ASC0001fr5
The Quarterly journal of the Geological Society of London.
v.7 (1851), Page 92 (1851)
Smithsonian Libraries
BHL Page 34983745
Keywords
geological section Ardtun Head geology columnar amorphous basalt leaf-bed tuff-bed tuff layer section rock Ardtun coastal cliff drawing columnar basalt leaf-beds Basalt pillars Strata Shale Fossil leaves Leaf beds pictorial