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VOLCANIC ASHES, SHROPSHIRE AND CAERMARTIIENSHIRE. 193 



brown granular hard felspathic rock, with hard siliceous tIppeb 

 or cherty bands. Gallery. 



73. — Decomposing felspathic sandstone. — South-east Wan-case* 

 of Llansaintffraid Church, Radnorshire. Map 56, S.E. 

 Dark brown porous rock, made up of broken felspar 

 crystals loosely cemented. Contains fragments of fossils. 



72 and 73 are more properly sandstones made from 

 volcanic material, than true ashes. Such rocks, however, in 

 this neighbourhood pass gradually into true felspathic ashes. 



74. — Fine felspathic brecciated ash. 



Range 



of 



Carneddau, Radnorshire, near Builth. Map 56, S.W. 

 Breconshire. Light brownish-grey felspathic rock, enclos- 

 ing angular fragments similar in color and texture to the 

 matrix ; the specimen is apparently bleached. 



75. — Volcanic conglomerate. — Carneddau, Radnor- 

 shire. Map 56, S.W. Near Builth. Dark brownish- 

 black felspathic rock, chiefly formed of angular fragmen- 

 tary crystals of felspar, enclosing rounded pebbles, and 

 angular felspathic fragments which project on the weathered 

 surface. 



76. — Felspathic breccia. — North end of the Carneddau, 

 Builth, as above. Very hard rock, full of white hard 

 felspathic angular fragments set in a black base. 



77. — Felspathic, ashy, fine, brecciated rock. — Llan- 



degley Mountain, west of " the Rocks/' Llandegley, Radnor- 

 shire. Map 56, S.E. Brownish-grey rock, with fragments 

 of felspathic and slaty rocks included, and crystals of felspar, 

 and containing fragments of fossils ( Or this). These rocks 

 are from the same set of beds with those of the Carneddau 

 and Llansaintffraid, near Builth. They pass from ordinary 

 sandy sediment into decided ashes or tufas, and are fre- 

 quently fossiliferous. 



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Caermarthensiiire. 



78 — Brecciated felspathic ash.— Cam Blaendyffryn, 

 Llangadock, Carmarthenshire, South Wales. Map 41. 



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