The Quarterly journal of the Geological Society of London . reached. This axis is crossed at 800 yards from the tunnel,and forms a fairly flat arch in the thick beds of sandstone and shales,which is beautifully shown in the deep cutting that occurs at thispoint. Beyond this the inclination of the beds turns over to the west, andthe dip gradually increases, to as much as 25° at Hady Lane, where theoutcrop of the Black Shale Coal with the Ironstone series above it a. J. Gc. S. No. 214. N 166 MR. C. FOX-STRANGWATS ON SECTIONS ALONG THE [May 1898, is again reached. The following details of the coa
The Quarterly journal of the Geological Society of London . reached. This axis is crossed at 800 yards from the tunnel,and forms a fairly flat arch in the thick beds of sandstone and shales,which is beautifully shown in the deep cutting that occurs at thispoint. Beyond this the inclination of the beds turns over to the west, andthe dip gradually increases, to as much as 25° at Hady Lane, where theoutcrop of the Black Shale Coal with the Ironstone series above it a. J. Gc. S. No. 214. N 166 MR. C. FOX-STRANGWATS ON SECTIONS ALONG THE [May 1898, is again reached. The following details of the coal were measured at this spot:— Section at Hadt Plantation. Feet. with many bauds of ironstone. Coal 0 3 Shale 2 6 Coal 2 8 Shale 2 10 Coal 1 3 Shale 1 10 Coal 1 3 Shale 1 0 Coal with a parting o 0 In the cutting between here and Spital two coal-seams are seen,the uppermost of which is about 6 feet in thickness; it is intersectedby a small fault, as shown in the accompanying figure :— Yig, 5.—Section in cutting west of Hady a =? Sandstone, which passes very abruptly eastward into shale. b = Shales. c =z Coal-seam, 6 feet in thickness. cZ = Sandstone rising in a great floor on the other side of the cutting. e =:Fault, with easterly downthrow a little less than the thickness of the coal. The bed of sandstone in the upper part, on the east side, ends offvery abruptly in the same manner as that noticed at Long Duck-m ant on. This appears to be a peculiar feature in these Coal-Measure sandstones. It is very ditferent from ordinary thinningout, and is probably due to the effect of strong currents during thedeposition of the beds.^ The dip here has turned round more to the south, causing veryextensive slips on the northern side of the railway. In fact, nearlyall the upper beds have slipped over the basement-sandstone shownin the figure, so that the dip-slope of this bed now forms the surfaceof the cutting on the northern side. From this point the line p
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Keywords: ., bookcentury1800, bookdecade1840, bookidquarte, booksubjectgeology
