Subject ASC0001ud0
The Quarterly journal of the Geological Society of London.
v.68 (1912), Page 646 (1912)
Smithsonian Libraries
BHL Page 36077046
Keywords
Hempstead Colliery Horizontal section New Quarry Old Quarry horizontal section layer tilt hamstead colliery trias pit scale canal quarry gravel road new old Quarry Landscape cross section layers rock sandstone