Subject ASC0003s6w
The geological magazine, or, Monthly journal of geology.
[Decade 1]:v. 2 (1865), Page 159 (1865)
Smithsonian Libraries
BHL Page 30540545
Keywords
United Kingdom South Wales coalfields Pennant Hills coal millstone-grit sandstone mountain-limestone ironworks Ebbw Vale Tredegar Ebbw valleys North Crop hill pennant terrace measure foot plateau millstone grit mountain limestone rock parallel valley escarpment patchwork seam north crop ebbw-vale tredegar pennant sandstone coal measures millstone grit pennant hills terraces raised beaches Geology landscape millstone-grit plateau geology pennant rocks parallel valley mining tredgar