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SOME VARIATIONS IN THE COAL MEASURES OF YORKSHIRE

1947; Zoological Society of London; Volume: 27; Issue: 2 Linguagem: Inglês

10.1144/pygs.27.2.58

2041-4811

W. H. Wilcockson,

Mineral Processing and Grinding

( Presidential Address, November, 1946). The coalfield of Yorkshire comprises the northern part of the great coalfield which flanks the eastern side of the southern Pennines. It extends from Leeds to Sheffield and from the outcrop of the seams in the west to a line, as yet unproved, in the east. Wherever this line may be, there is an eastern boundary which will be decided by the descent of the coals below the economic working depth, and this must lie generally somewhere about the line of the River Trent. Such an extension takes the coalfield into both Nottinghamshire and Lincolnshire. However, in the northern part of the region, little is known east of Thorne, so that if we limit ourselves to the known ground, we shall only have to cross the county boundary in the south where colliery development has been pushed into Nottinghamshire. The proved coalfield covers approximately 900 square miles and this area may be divided up in several ways: firstly, according to exposure, into the exposed and concealed coalfields, secondly, according to succession and character of coal seams, into West and South Yorkshire, and finally, according to tectonic structure, into a number of basins or troughs divided by anticlinal ridges. The first subdivision into the exposed and concealed coalfields is quite definite, but has no geological significance in the Carboniferous rocks. The separation into West and South Yorkshire is maintained for convenience of administration and though somewhat indefinite, it has some geological basis; seams important in South Yorkshire ...