1068 DR R- KIDSTON, MR T. C. CANTR1LL, AND MR E. E. L. DIXON. 



Coal Measures. 



Lithological Characters and Thickness. — The Coal Measures are not known in 

 complete sequence, exposures being few and details of shaft-sections almost unknown ; 

 but the} r may be summarised as follows in descending order : — 



The Coal Measures of Titter stone Clee Hill. 



Feet. 

 12. Sandstones, buff- weathering, with much green material, fine- to coarse-grained; small 



quartz pebbles in some beds, — at least . . . . . . . . .100 



11. Clays, chiefly light-grey or red, shales and sandstones, many of whicb are espleys, 



with ironstones, and thin coals ; a marine band, with Productus scabriculus Martin 



and Lamellibranchs near the top, and probably at least another at a lower level ; 



plants chiefly reed-like stems or, in some sandstones, large fragments : Sph. Laurenti 



Andrae (near the top) ; Mariopteris muricata Schl. sp., Pecopteris Miltoni Artis sp., 



Spheno]>teris obtusiloba Brongt., Artisia approximate), Brongt. sp., — thickness about . 650 



10. Great Coal. Many plants in the shales and clays associated with this coal and those 



(4, 6, and 8) immediately below, including Sphenopteris Marrati Kidston, Sphenopteris 



stipulata, Gutbier, Sphenopteris Dixoni Kidston n. sp., Pecopteris Miltoni Artis sp., 



Pecopteris cf. Volkmanni Sauveur, Mariopteris muricata Schl. sp., Neuropteris 



heterophylla Brongt., Neitropteris tenuifolia Schl. sp., Neuropteris rarinervis Bunbury, 



Neuropteris gigantea Sternb., Sphenophyllum sp., Lepidodendron selayinoides 



Sterab., Lepidophyllum sp., Sig Maria (Claihraria) sp., Cordaites borassifolius 



Sternb. sp., Oarpolithes membranaceus Gb'pp., Pinnularia capillacea L. & H , 



and Artisia approximata Brongt. sp., — 5 feet to 



9. Underclay and sbale with ironstone (worked), — 3 feet to 



8. Three Quarter Coal, — 1 foot to . 



7. Underclay and measures, — 4i feet to . . . . . . . . . . 18 



6. Smith Coal, with clod, — 2 feet to .......... . 6 



5. Measures, — 12 feet to ............ 40 



4. Four Feet Coal,— 2 feet to 4 



3. Chiefly clays like those above the Great Coal, with sandstones which are occasionally 



thick enough to form surface-features and which include many espleys ; at least one 

 marine horizon (Conularia) ; ironstones and thin coals at various levels; Pecopteris 

 Miltoni Artis sp., Dartylotheca plumosa Artis sp., Mariopteris muricata. Schl. sp., 

 Neuropteris gigantea Sternb., Asterophyllites equisetiformis Schl. sp., Pararalamo- 

 stachys cf. striata Weiss, Sphenophyllum cuneifolium Sternb. sp. and Lepidophloios 

 sp., — possibly no more than 250 feet in places, and nowhere probably exceeding . 450 

 2. Gutter or Bluestone Coal. Many plants from associated beds, including Sphenopteris 

 trifoliolata Artis sp., Sphenopteris Kilimlii Kidston, Sphenopteris Srhwerini Stur sp., 

 Pecopteris Miltoni Artis sp., Dactylotheca plumosa Artis sp., Mariopteris muricata 

 Schl. sp., Neuropteris heterophylla Brongt., Neuropteris gigantea Sternb., Neuropteris 

 cf. callosa Lesqx., Annularia radiata Brongt., Paracalamostachya cf. striata Weiss, 

 Samaropsis cf. crassa Lesqx., Oarpolithes cf. perpusillus Lesqx., Artisia approximata 

 Brongt. sp. ............. . 3 



1. Sandstones, some conglomeratic, clays and shales, with a coarse basal conglomerate in 



places ; this bed and some of the sandstones have the lithological characters of 

 Millstone Grit, but interbedded are ironstones (worked) and one or two coal 

 partings ; typical Upper Carboniferous plants in some of the sandstones, and also in 

 pene-contemporaneous flakes of shale or clay enclosed in the conglomeratic sandstones : 

 Neuropteris gigantea Sternb., Cordaites cf. principalis Germar sp., Artisia approxi- 

 mata Brongt., — total thickness 50 to . . . . . . . . .100 



Total thickness about . . . 1400 



