44 



CONGLOMERATES 



TJPPSR 



Gallery. 



29. — Magnesian Conglomerate, from the Neio Red 



Valine a.""** '' fra ^ raents of Carboniferous limestone in a base of 



magnesian limestone. The specimen exhibits a weathered 

 surface. — Coast of Glamorganshire. 



Similar conglomerates are found at the base of the New 

 red sandstone, marl, and part of the Lias in Glamorganshire 

 Somersetshire, and Gloucestershire. In one instance it 

 contains Lias fossils. — A. C. R. 



30.— Conglomerate, pebbles of quartz in a partially 

 crystallised quartzose base. From New Red Sandstone. 



3 J. —Conglomerate, calcareous pebbles in a base of 

 shelly limestone : bottom bed of Lias. (See "Memoirs of 

 Geological Survey," pp. 244-252.)— Craig-yri-cros, 

 Bridgend, Glamorganshire. 



32.— Stalagmitic Conglomerate, rounded pebbles of 

 Carboniferous limestone embedded in stalagmitic carbonate 

 of lime, and forming the floor of a bone cave (Bacon 

 Hole). — Gower, near Swansea, Glamorganshire. Presented 

 by A. C. Ramsay. 



33.- 



near 



^ Conglomerate, pebbles of white quartz and slaty 

 rocks in a siliceous base, showing a weathered surface. 



Denbighshire sandstone, at the base of the Wenlock 



Shale. 



E, 



m a 



34. — Bunter Conglomerate, pebbles of quartz 



quartzose base, cemented by micaceous oxide of iron. From 



the basement bed of the New Red Sandstone.— Doblaston, 

 Cheshire. 



35. — Brecciated Conglomerate, subangular pebbles of 

 slate and shells in a sandy calcareous base. — Upper Llan- 

 dovery, or Pentamerus beds ; Hope Quarry, Salop. 



36. — Fossiliperous Conglomerate, composed chiefly of 

 small pebbles of quartz and a few subangular fragments of 

 grey slate in a siliceous base. From the range of sand- 

 stones and conglomerates on the hills, {Lower Llandovery 

 rochs,) 4 or 5 miles north of Caermarthen. 



37. — Conglomerate, pebbles of Red Sandstone in a 



marly base. From the 



Permia 



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