190 



IGNEOUS ROCKS, 



Upper 

 Galle r y. 



Wall-case 4 



56. — Felspatiiic brecciated ash. — Hyssington, Bishops 



Castle, Shropshire. Map 60, S.E. Dark bluish-grey rock 



and altered black slate 



with grey felspathic fragments 

 Contains a good deal of lime. 



From the same bed as 53. 



57. FELSrATIIO - SILICEOUS SANDY ASH. 



Harrington 



Dingle, one mile East of Chirbury, Shropshire. Map 60 



S.E. 



Green granular rock, felspathic and siliceous, with 



large and small fragments of black slate, and angular fra<*. 

 ments and crystals of felspar. Slightly calcareous. From 

 the higher beds of the Llandeilo flags west of the Stiper stones. 



58. 



Felspathic sandy ash. — Marrington Dingle, South- 



in 60, S.E. Bluish- 



grey 



east of Chirbury, Shropshire. Map 60, S.E. 

 felspathic fine grained sandstone, with a few calcareous ker- 

 nels and small angular felspathic fragments. Same beds aso7. 



59. — Felspathic sandstone. — Marrington 

 of Chirbury, Shropshire. Map 60, S.E. Variegated light 

 and dark greenish-grey fine grained sandstone, made up of 

 fine felspathic grains. Smells rather argillaceous or earthy. 

 Same beds as above. 



60. — Felspathic brecciated conglomerate. 



Mar 



as above. Felspathic sandstone matrix, 



the preceeding, containing small 



rington Dingle, 

 similar in structure to 



angular and subangular fragments of felspathic and por- 

 phyritic rocks. 



61. — Felspathic sandy ash. — Marrington Dingle, as 

 above. Rock contains fragmentary films of slate, irregularly 

 dispersed in a matrix, similar to Nos. 59 and 60, 



(32. — Felspathic ashy rock. — Hope Common, between 

 Chirbury and Minsterley, Shropshire. Map lx., N.E. 

 Chiefly composed of triturated felspar and small dark 

 (hornblendic ?) grains, with small crystals of glassy felspar. 



Nos 



of the Llandeilo flags. 



63. — Sandy felspathic ash. 



Marrington Dingle, as 



above. Light greenish rock, consisting of felspathic grains 



No 



in texture. 



0- 



v 



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CI 

 ! felsi 



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 ilea 



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HW 



u 



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