238 MR. L. D. STAMP ON THE HIGHEST [vol. lxxiv, 



from. 3 to 4 inches thick of JPlatyschisma Limestone which 

 have weathered to a soft brown rock. Six or seven of these bands 

 can be seen in the quarry-face (about 25 feet high). They are 

 lenticular in character, and several die out in the breadth of the 

 quarry itself — about 30 feet. Mocliolopsis complanata occurs in 

 many of the Platyschisma bands, and other lamellibranchs are 

 found in thin sandstone-bands in the upper part of the quarry. 

 On the northern side of the quarry local folding of the beds has 

 produced a sharp monocline, with its pitch in the direction of the 

 prevalent dip. 



Above the quarry on higher ground to the south-east Platy- 

 schisma Shales are again exposed, and they contain a few bands of 

 sandstone and hard greenish flagstone. 



(h) Section in the stream from New Invention up to Five 

 Turnings. — In the low ground near New Invention the stream 

 cuts through alluvium and subsoil of reddish colour, with blocks of 

 greenish Upper Chonetes Beds. A short distance up the little 

 wooded gorge Platysehisma Shales, with characteristic micaceous 

 sheen, crop out. The succession includes numerous bands of hard 

 limestone, 3 to 4 inches thick, consisting entirely of Platy- 

 scliisma lid i cites. The same fossil occurs more sparingly in the 

 shales themselves. The succeeding sandstones are not seen, as 

 the banks of the stream are low and cultivated, but numerous 

 blocks of yellow, micaceous, tilestone may be found near. There 

 are also blocks of greenish grit a short distance higher up the 

 stream. The next beds exposed in situ are rubbly green marls 

 (Temeside Shales) succeeded by marls exhibiting a more decided 

 bedding, and then by green marl with large spheroidal structure. 

 This is seen in the small wood near the spring (marked on the 

 6-inch Ordnance Survey map, Shropshire 76 N.W.). Similar beds 

 are exposed in a small quarry immediately above the spring. 



(c) Old Quarry near Five Turnings. — This quarry is of parti- 

 cular interest, since the passage from Platysehisma Shales to 

 Temeside Shales is here seen, and a fault which, though of small 

 throw, has a considerable effect on the structure of the district, is 

 exposed. 



On the eastern or downthrow side of the fault rubbly green 

 marl (Temeside Shales) is exposed. The western part of the 

 quarry shows the following succession : — 



Thickness in feet. 



Temeside Shales. Irregularly-bedded micaceous green grit -f 3 



f Micaceous yellow tilestones 3 



T^ , « , , Yellow bedded sandstones „ 



Downton Sandstone. < n ■ ■, ■, nil , , > 9 



I Greenish bedded sandstones J 



[_Platysch isma Shales seen for 2 



The greenish sandstones have bands full of casts of Bellcroplioii 

 trilobatus, and are often full of fragments of Linyula minima. 



