Subject ASC0002hk6
The Quarterly journal of the Geological Society of London.
v.35 (1879), Page 648 (1879)
Smithsonian Libraries
BHL Page 39014785
Keywords
volcanic tuff quartzite hollybush sandstone Shineton shales Wrekin tuff precambrian shineton shales tremadoc Wrekin chain cross section geology rock landscape crosssection ground