272 PROFS. LLOYD MOEGA^^ AISTD REYNOLDS ON THE [Allg. I9OI, 



vesicular, and contains quartz-grains. Its relation to the sedi- 

 mentary beds is not here seen. 



We have not been able to find any trap in situ farther south ; 

 hut fragments of trap occur in cottage-gardens. Unfossiliferoua 

 sandstone, resembling those of the Llandovery Series, is found in 

 Fowler's Court Farm-yard, near the railway, south of Charfield- 

 Green Station. If, as is probable, the trap-band pursues the course 

 indicated in the Geological Survey Map, this sandstone lies a score 

 or two of feet beneath it. 



(b) The Avening-Green and Daniers Wood Exposures. 



These probably mark the course of the upper Charfield-Green 

 band, or of a distinct band at about the same horizon. But between 

 Charfield Green and Avening Green the Silurian strata are overlain 

 by Keuper. 



Immediately west of the little hamlet of Avening Green is a 

 large, shallow^ long-disused quarry showing good exposures of the 

 trap. The rock, which is much weathered and shattered, is some- 

 what amygdaloidal. In the quarry, scattered over the fields to the 

 north, and built into the adjoining walls, are numerous blocks of 

 a calcareous sandstone of Llandovery facies, containing Coelospira 

 liemisijlicerica , Sow., Hhynchonella nucula, Sow., Bh. Uandoveriana (? ) 

 Dav., Atrypa reticularis, Linn., and Choyietes striatella, Dalm. ; but 

 there is no visible point of contact between the trap and the sedi- 

 mentaries in situ. 



On the left bank of the stream, due north of the cottages, Llan- 

 dovery Beds underlying the trap are seen in situ. The following 

 fossils have been determined by Mr. F. E. Cowper Reed : — 



Encrinurus punctatits, Briinn. 

 Calymene sp. 

 Fhacops sp. 

 Ihitaculites sp. 

 Cyclonema cor alii, Sow. 



Chonetes sp. 



Stropheodonta sp. 



Lindstrmyiia suhchqdicaia, M'Coy. 



Crinoid-remaius. 



In William Sanders's map, and that of the Geological Survey, the 

 Avening-Green exposure of trap is prolonged as a narrow band 

 stretching west-north-westward past Crockley's Farm to unite with 

 the Daniel's Wood exposures. Near Crockley's Farm, it has been 

 proved by an excavation, from which Lord Ducie obtained large 

 bun-like geodes ; but we have not been able to find any indications 

 of its course at intermediate points, nor is the ground favourable 

 for tracing it in any detail. We find it difficult to realize on what 

 data Murchison based his somewhat minute description ^ of its 

 irregular course and marked variation in thickness. The officers of 

 the Geological Survey drew a line of fault along the north-eastern 

 margin of the trap-band ; but on what field- evidence this was based 

 we are unable to say. f 



When we reach Daniel's Wood, however, the evidences of the ' 



1 ' Silurian System ' 1839, p. 4G0. 



