542 Histoy 0/ the 



Succession r,^ ,_ 



of Strata. *'• "■• 



28 Coal — Lower Foot, or Spanish Juice Mine, || Oaken Clongh, 



Greave, Old Shaw Dean, Bay Horse Inn, Dulesgate, 

 Holmes, &c., ..... 



29 Fire-clay — Greave, Rowley Moor, and other places, 



30 Light gray shale— Shawforth, Oaken Clongh, 



31 Dark shales, ...... 



32 Shaley impure coal— Bassy or Salts Mine. Shale, with 



bands of coal, at Holmes Qaarry Bacup, Walmesley 

 Clongh, Intac, Eowley Moor, . . . .20 



33 Brown strong shale — Holmes Quarry, Bacup, Meadow Top, 



Deansgreave, . . . . . .60 



34 Fine-grained brown sand-rock, Woodhead Hill rock,* much 



false bedded, and yields but an indifferent building 

 stone in this neighbourhood — Holmes and Nut Mill 

 Bacnp, Undershore, near Britannia Mill, Dnlei^gate, ic, 2-i 



35 Shale — Undershore, Dulesgate, &c., . . . . 50 



36 Coal, Deansgreave, Bacup, Hud Clongh Colliery Facit, 



Greens Clongh near Portsmouth, . . . 10 



37 Underclay, . . . . . . .16 



38 Upper rough-rock ; \ coarse rough grit full of rounded 



water-worn quartz pebbles— Bank House, Sheep House 

 Clongh, behind the Co-operative Store Bacup, along 

 Brandwood Moor, Banks' Mill Dulesgate, Seat Naze, Ac, 15 



39 Very black shale, full of vegetable impressions — -Deans- 



greave, Hndclough Facit, | . . . .10 



40 Coal — Feather Edge, or Sand-Rock Mine, Co-operative 



Store, and Bank House Bacup ; Deansgreave, Shaw- 

 forth and Banks' Mill Dulesgate, . . .14 



41 Undei-clay, always found with the coal, . . .30 



42 Lower rough-rock, similar to the higher section, but a 



little stronger and more massive — localities similar to 38, 24 



43 Strong brown shale — Hell Clongh, Shawforth flag quarries, 



Dulesgate, under the Bank House rock, along the north- 

 westerly side of Newchurch Road, Bacup, § . . 30 



II This mine is a little thicker at Ending, where it has been worked to a Email 

 eiteut. 



* Named from being found highly developed at the Woodhead Hill Tunnel, on 

 tlie M., S., and L. Eailway. 



+ On Holcombe Hill, this rocl; attain? a thickness of 66 feet. 



t This shale does not occur in any of the sections at Bacup. 



§ At this place the shale is considerably in excess of the 30 feet named above. 

 At Rake Head it runs up to about 130 feet, and on the Crawshawbooth side of 

 Cribden it attains a thickness of 310 feet. At Holcombe it is only a few inches. 



