Coalbed methane and coal geology by Rodney A. Gayer

By Rodney A. Gayer

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BRERETON, N. R. 1990. In situ crustal stress in the United Kingdom from borehole breakouts. , LOVELL, M. A. & MORTON, A. C. (eds) Geological Application of Wireline Logs. Geological Society, London, Special Publication, 48, 327-338. GUION, P. D. & FIELDING, C. R. 1988. Westphalian A and B sedimentation in the Pennine Basin, U. K. In: BESLY, B. M. & KELLING, G. (eds) Sedimentation in a Synorogenic Basin Complex: the Upper Carboniferous of Northwest Europe. Blackie, Glasgow, 153-177. INSTITUTE OF GEOLOGICAL SCIENCES 1979.

Table 2. Westphalian D Precursors to major folds NW - SE Westphalian D-Early Triassic Westphalian D-Early Triassic of Newcastle-under-Lyme (Figs 4 and 8), from where the rank diminishes towards the flanks of the synclinorium. In this high rank area, coals of the Moss seam (Westphalian B) have volatile matter contents of less than 37% (high-volatile A bituminous), increasing to more than 40% (high-volatile B bituminous) at the margins of the coalfield. The variation in coal rank with stratigraphic position in an early petroleum exploration borehole (Pie Rough) is summarized in Fig.

1988. The sulphur, ash relationship in coal seams and its implications in mine planning in the United Kingdom. Mining Science and Technology, 7, 265-275 BRERETON, N. R. & EVANS, C. J. 1987. Rock Stress Orientations in the United Kingdom from Borehole Breakouts. Report of the Regional Geophysics Research Group, British Geological Survey, RG 87/14. BRITISH GEOLOGICAL SURVEY 1985. Map 1: PrePermian Geology of the United Kingdom,(South). Map 2: Contours on Top of the pre-Permian Surface of the United Kingdom (South) 1 : 1000 000.

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