Subject ASC0003tcc

The geological magazine, or, Monthly journal of geology.
Decade 3:v. 4 (1887), Page 19 (1864)
Smithsonian Libraries
BHL Page 30751412

Keywords

blue shale bind transverse section Donisthorpe Leicestershire Coal-field cank sandstone fine-grained siliceo-ferrginous cone-in-cone cone structure shale formation mass 'cank'

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