1010 



DB B. KTDRTON. MR T. C. CANTEILL. AND ME E. E. L. DIXON. 



rocks were met with. These beds, which yielded no fossils, Dr Gibson names the 

 Brick-Clay or Espley Group, and correlates on lithological grounds with the Etruria 

 Marls of North Staffordshire. Below them follow the ordinary grey measures, with 

 coals and ironstones of the usual type, which yielded abundant fossil plants of Middle 

 Coal Measure (Westphalian) species, and contain scarcely any of the red and 



Claverley Bore-hole. 













Thickness. 



Depth 



. 





ft. 



in. 



ft 



in. 



Upper " Permian " Group ......... 



185 



6 



185 



6 



Middle " Permian" Group ......... 



286 



8 



472 



2 



Lower " Permian" Group = Keele Beds (768 ft.) : — 











Red and mottled marl and red and lavender-coloured sandstones, with 











plant-remains; bands of >S/n'?wfo's-limestone at 488^ ft., 775 ft., 











and 972 ft. No coals recorded ....... 



768 







1240 



2 



Halesowen Sandstones = Netvcastle Group (364 ft.) : — 











Grey and blue shale and sandstone ....... 



46 



o 



1286 



2 



Coal 





3 



1286 



5 



Blue shale and grey sandstone ........ 



109 







1395 



5 



Coal, friable ........... 





3 



1395 



8 



Grey and blue shale and sandstone, with plant-remains • . 



208 



6 



1604 



2 



Brick-Clay or Espley Group (193 ft.) : — 











Chocolate-red and variegated hard marls, with thick beds of green grit 











and breccia ("espley " rock) ....... 



193 







1797 



2 



Productive Measures (393 ft. 4 in.) : — 





. 







Grey, dark-grey, and black shale, with 1 ft. of variegated marl ; 











Lingula at 1811 ft. 8 in. . 



31 



6 



1828 



8 



Coal 





2 



1828 



10 



Grey and black shale, fireclay, sandstone, and some ironstone, with 











15 ft. of variegated marls ........ 



79 



4 



1908 



2 



Coal . . . " 





6 



1908 



8 



Dark shale, and fireclay with ironstone . . . . . . 



28 



6 



1937 



2 



Olivine dolerite .......... 



23 







1960 



2 



! Grey sandy shale, sandstone, and ironstone ..... 



77 







2037 



2 



Coal, friable, dirty .......... 





4 



2037 



6 



Black shale ........... 



7 







2044 



.6 



Coal, friable, dirty .......... 



1 







2045 



6 



Fireclay, ironstone, black shale, and small layer of coal 



11 







2056 



6 



Hard fireclay with ironstone, marl, shale, sandstone with ironstone, 











and fine streaks of coal ........ 



27 







2083 



6 



Marl (part mottled), 8 ft. ; sandstones, grey shales, marls, and fire- 











clays ; 12 ft. 6 in. of fireclay at bottom ..... 



107 







2190 



6 



Silurian (44 ft. 6 in.) : — 











Hard grey rock with fossil shells {Atrijj>a reticularis, etc.) . 



44 



6 



£235 







variegated marls, and none of the espley rocks, characteristic of the overlying group. 

 The small thickness of productive measures (393 feet) as compared with the southern 

 end of the neighbouring South Staffordshire coal field (500-600 feet), and the 

 apparent absence of thick and workable coals, may be due to the bore-hole having 

 pitched upon a local shoal or land-tract that remained unsubmerged till late in 

 Middle Coal Measure time — too late, in fact, for the formation of the most valuable 

 of the South Staffordshire seams. Other explanations may, however, be offered. 



