566 



Hemeivs — G. H. Morton's Geology 



neighbourhood of Liverpool, from September, 1890, to the end of 

 1896, comprises thii'ty-three papers, chiefly published in the Pro- 

 ceedings of the Liverpool Geological Society, the source also of 

 a large proportion of the material referred to in the former editions, 

 for which a bibliography vv^ould have been highly useful. Tiie 

 memoir last quoted in the list is Mr. Morton's condensed account 

 of the geology of the district under notice, prepared as a handbook 

 for the British Association Meeting in 1896, and accompanied with 

 a geological map based on the Geological Survey Map, Sheet 79, 

 N.E., and portions of the adjoining sheets, so as to include the 

 Coal-measures lying to the north-east of Liverpool. Some details of 

 the National Map, such as the actual coal-seams and faults, which are 

 often the boundaries of the exposed formations, are omitted ; and some 

 important patches of the Red or Keuper Marl have been introduced. 

 If the coloui's on the map and its index had been numbered 

 with successive figures, there would have been less difficulty in 

 recognizing the several faint tints of red and pink. 



The corrected list of the Formations and their estimated thicknesses 

 in South- West Lancashire, including Wirral (the large peninsula 

 south-west of Liverpool, between the Mersey and the Dee), and of 

 North Flintshire, is as follows : — 



South-West Lancashire and "Wirral. 



Blown Sand and Estuariue Sand and Silt 

 Peat and Forest Beds, Silt and Sand 

 Boulder-clay and Sand 

 Cave - deposits (in FKutshire and 

 Denbighshire) 



f Bed Marl 



( Keuper Sandstone 



! Upper Soft Sandstone 

 Upper Hard Sandstone 

 Lower Hard Sandstone (with pebbles) 

 . Lower Soft Sandstone 



I Magnesian Limestone ... 



( Marl and Soft Sandstone 

 I Upper Coal-measures ... 

 < Middle or Productive Coal-measures... 

 (Lower Coal-measures 

 Millstone-grit ... 



Recent 



Pleistocene 



i Post-Glacial 

 Aqueo- Glacial 

 Pre -Glacial 



Keuper 



EEET 



100 



25 



100 



Trias 



Permian 



Carboniferous 



I Bunter 



! Coal-measures 

 Millstone -grit 



2 



1000 



400 



550 



400 



600 



400 



10 



100 



1200 



1300 



1880 



300 



North Flintshire. 



Carboniferous - 



Coal-measures 



Cefn-y-Fedw 



Sandstone 



Carboniferous 



Limestone 



I Middle or Productive Coal-measures 

 ( Lower Coal-measures ... 



iGwespyr Shale ... 

 Gwespyr Sandstone 

 Holywell Shale 



Cherty Sandstone (with shale) 

 / Upper Black Limestone 

 \ Upper Grey Limestone 

 { Middle White Limestone 

 f Lower Brown Limestone 

 \ Bed Basement-beds 



8,367 



700>i 

 300 

 160 

 120 

 100 

 2oQJ 

 200 

 500 

 600 

 400 

 3 



3,323 



1 These are represented in South-West Lancashire by the Middle and Lower Coal- 

 measures and Millstone-grit. 



