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- W1977304993 abstract "(Read November 25th, 1915.)This section has long been under observation by Yorkshire geologists, but no detailed record has hitherto been given of the Lower Permian beds as exposed here within the last few years. The chief interest has been centred upon the Upper Coal Measures upon which the Permian rests, beds which have yielded a rich harvest of fossil-plants. The top-most bed of the Coal Measures is a fine-grained micaceous sandstone deeply stained with hematite. The surface of this sandstone is undulating, and in the hollows are found deposits of Permian age, consisting of conglomeratic material. The largest pebbles in this conglomerate are in general not more than an. inch in diameter, but during a visit to the section in September, 1915, some large boulders up to eighteen inches in diameter, were found, which had been taken out of the conglomerate by the workmen. These boulders consisted of sandstone, identical with the underlying Coal Measure sandstone, and a dense siliceous sandstone also possibly a Coal Measure type.Intercalated with this conglomerate are beds of fine sand, which sand is in all respects, except colour, like the sand which occurs in similar stratigraphical positions along the edge of the Permian escarpment from North-east Durham to Yorkshire. As the section shows, this lowest bed is in its thickest part about 5 ft. 6 ins., but in a distance of 15 ft., it has thinned away to 15 ins. of fine sand with very few pebbles. Resting upon this bed and traceable ..." @default.
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- W1977304993 date "1918-01-01" @default.
- W1977304993 modified "2023-09-29" @default.
- W1977304993 title "THE LOWER PERMIAN AT ASHFIELD BRICK AND TILE WORKS, CONISBOROUGH" @default.
- W1977304993 doi "https://doi.org/10.1144/pygs.19.4.289" @default.
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