...The blue shale,on the contrary, frequently contains numerous concretions,and great abundance of thin layers ofgypsum and crystals of the same... 
W. E. Webb 「Buffalo Land」
...A slab of shale obtained in 1955 by Mr...
Theodore H. Eaton 「A New Order of Fishlike Amphibia From the Pennsylvanian of Kansas」
...Riffles 8-12 feet wide, 6 inches deep, bottom of flat, fragmented shale; pools having shale and mud bottom; water slightly turbid...
James E. Deacon 「Fishes of the Wakarusa River in Kansas」
...—Rock Lake shale member, Stanton formation,Lansing group, Missouri series, Upper Pennsylvanian...
Joan Echols 「A New Genus of Pennsylvania Fish (Crossoperygii, Coelacanthiformes) from Kansas」
...His feet struck a shale bottom...
Various 「Astounding Stories of Super-Science, December 1930」
...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」
便利！手書き漢字入力検索