...It is the onewhose bones most frequently crowned knobs of shale,which had been left standing amid surrounding destruction... 
W. E. Webb 「Buffalo Land」
...The Menefee formation is 340 to 800 feet thick, andcontains carbonaceous shale and beds of coal...
Charles L. Douglas 「Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado」
...A slab of shale obtained in 1955 by Mr...
Theodore H. Eaton 「A New Order of Fishlike Amphibia From the Pennsylvanian of Kansas」
...These were from the Rock Lake shale member of the Stantonformation, six miles northwest of Garnett, Anderson County, Kansas...
Joan Echols 「A New Genus of Pennsylvania Fish (Crossoperygii, Coelacanthiformes) from Kansas」
...Camp collectedadditional blocks of Rock Lake shale from this second locality...
Joan Echols 「A New Genus of Pennsylvania Fish (Crossoperygii, Coelacanthiformes) from Kansas」
...We therefore entered the bed of the river toexamine it, and found two seams of coal--one five feet thick and theother about six feet thick--between beds of sandstone and shale...
A C and F T Gregory 「Journals of Australian Explorations」
...In the bed of the river several fragments of jasper and black shale werefound, the latter appearing to belong to the coal formation...
A C and F T Gregory 「Journals of Australian Explorations」
...Descending into a valley with a drycreek fifteen yards wide, the rocks on the south-east slope chertylimestone alternating with thin beds of shale, the strata dipping 20degrees to 30 degrees west...
A C and F T Gregory 「Journals of Australian Explorations」
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