Subject ASC0003u8u
The geologist : a popular monthly magazine of geology.
Vol.1, Page 100 ()
Natural History Museum Library, London
BHL Page 46420090
Keywords
diagram seabed geology strata deposit ancient sea-bed earth's crust sediments Harlech grits Longmynd rocks Silurian slates stratta slopes bottom rocks rise higher and higher submerged as old and unchangeable as the hills solid as the mountains thickness angle sea bed sea bed depth sea-bed Silurian