Subject ASC0003tfx
The geological magazine, or, Monthly journal of geology.
Decade 3:v. 8 (1891), Page 488 (1891)
Smithsonian Libraries
BHL Page 30545878
Keywords
Glacial Drift coal Nevin Carnanvonshire fault strata geology faulting sand silt clay Mining Exploration diagram. clay silt cliff beds glacial drifts