Page:Transactions of the Natural History Society of Northumberland, Durham, and Newcastle-upon-Tyne 1838 Vol.2.djvu/319

Rh HUDGILL-BURN. Fathoms. Feet. 3 five miles, is terminated by a spacious amphitheatre of bleak and lofty hills, which, together with the mountainous ridges on each side of the vale of Nent, have from time immemorial been celebrated for the abundance and value of their mineral deposits. Rampgill Mine, in the last century, and Hudgill-burn, in the present, have been particularly distinguished by the richness of their mineral veins. The strata of the Vale of Nent consist entirely of the Mountain Lime- stone formation, and to the favourable position of the principal stratum of Limestone much of its subterranean wealth may be attributed. The fol- lowing are sections of the strata as found in Hudgill-burn Mine on the west, and in Nentsberry Shaft on the east side of the River Nent : — NENTSBERRY. Fathoms. Feet. Three yards Limestone, 2 3 Greybeds Six fathom Hazle, 9 Five yards Limestone, 2 Slaty Hazle, 4 Plate, 2 Scar Limestone, 8 Hazle Post, Plate, 1 Hazle, Hazle and Plate, 3 Cockle-shell Limestone, Plate, Plate and Hazle, 4 Hazle, 3 Post Limestone, 1 Plate, 1 Surface of Water in Nentforce Level

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5 4 3 1

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4 1 °2 Plate, Firestone, 3 Plate. 6 Pattinson's Sill, 1 Plate, 4 Little Limestone, 1 White Hazle, .-. Plate, 3 Coal, Hazle, called the High Coal Sill, 1 Plate, 2 Low Coal Sill, Plate, 2 Great Limestone, 9 Hazle, called the Tuft, 2 Plate, 3 Limestone Post, Plate, Hazle, called the Quarry Hazle, 3 Plate 3 Girdle, or Till Bed, 2 Four fathom Limestone, 3 Plate and Greybeds, 1 Natrass-gill Hazle, 2 These strata preserve considerable uniformity, except when deranged by what are called Cross Veins, which intersect them in a north and south direction. Brownley Hill Cross Vein has what is locally called a throw or

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