Subject ASC0001exi
The Quarterly journal of the Geological Society of London.
v.21 (1865), Page 209 (1865)
Smithsonian Libraries
BHL Page 34891879
Keywords
section of the Clydesdale Drifts boulder-clay laminated clay shell-bed Arctic species clay sand and gravel with stones British species Upper Drifts surface soil section rocks strata Clydesdale Drifts soil soil chart