SECTION OF THE SOUTH JOOG1NS. 



159 



(Gray sandstone and shale. One iindorelay with It bL 

 Qtigmaria) . . . . . . . 12 6 



Gray argillaceous shale. 



( 'aiil, 1 inch. 



Gray argillaceous underclay, Stigmaria, 1 ft. 6 in. 



Coal group 7 \ Coal, 2 inches. 



Gray argillaceous underclay, Stigmaria, 4 inches. 



Coal, 1 inch 2 2 



Gray argillaceous underclay, Stigmaria. 



This is an alternation of thin coarse coals or fossil vegetable 

 Boils with Stigmaria subsoils. The roof-shale contains erect 

 ( 'alamites, which seem to have been the last vegetation which 

 grew on the surface of the upper coal. 



(Gray and reddish sandstones and shales) 

 ( Knl and gray shale. 



Coal-group 8 < Coal, 1 inch 



j^Gray hard underclay, Stigmaria. 



This coal contains flattened trunks of Sigillaria scutellata, 

 or an allied species, and of other Sigillaria^, also abundance of 

 vascular bundles of ferns and portions of epidermal tissues of 

 different plants. 



(Gray sandstone and red and gray shales. Stigmarta 

 in the upper bed, and prostrate Sigillaria and 

 Cordaites in some of the sandstones and shales) . 

 ("Gray argillaceous shale, ironstone nodules. 



Coal-group 9 -< Coal, 3 inches ....... 



( Argillo-arenaccous underclay, Stigmaria. 



The roof of this coal holds prostrate Sigillaria; of three species 

 and Cordaites borassifolia. The coal is hard and shining, with 

 impressions of flattened Sigillarice, also of Cordaites, Asterophyl- 

 l itrs, Carpolites, and vascular bundles of ferns. 



(Underclay and reddish gray shale) 



' Reddish gray shale. 



Coal and coaly shale, 8 inches. 



r, . ,- Gray argillaceous underclay, nodules of ironstone, 



Coal-group 10 \ J u[ £- ;/llia) .^ 2 fect . 



Coal, stony and compact, 2 inches .... 

 Gray argillaceous underclay, Stigmaria. 



The roof-shale has obscure impressions of plants, apparently 



petioles of ferns. The upper coal is thinly laminated and full 



of leaves of Cordaites and ferns, among which is Aletlmpteris 



loncftitica. The lower coal is compact, resembling cannel, and 



has many vascular bundles of ferns. It seems to be composed 



of herbaceous matter macerated in water and mixed with mud. 



73 



1 



490 

 



C 'al-group 11. 



{ 



((hay sandstone and shale with nodules of ironstone) 



Gray argillaceous shale. 



( 'mil, shaly, 3 inches ...... 



Arenaceous underclay, Stigmaria. 



6 



2 10 



23 



3 



