Vol. 55.] CON-GLOMERATES OF THE LOWER SEYERN BASIN. 113 



The Middle Permian of the Stour Yalley District. 



(i) The Stourbridge-Kingswinford area. — Abont Ig mile 

 north of Chawnhill a calcareous cornstone was exposed in a trench 

 made some 3 years ago, and in an adjacent field a single band of more 

 or less calcareous sandstone is fairly well seen at the present day : 

 which baud of the three it is cannot be stated. A calcareous band 

 again crops out a mile farther north, at Buckpool, and can be 

 followed for less than | mile : it is a distinct conglomerate, 

 between 15 and 20 feet thick. The pebbles are rounded, but some 

 are very nearly subangular : they attain a length of 5 inches, 

 and are set in a hard, calcareous, sandy base which constitutes 

 about half the material of the band. There is not sufficient evidence 

 to show whether it is A\ B\ or C\ 



After an interval of | mile there is a prominent rib, | mile long, 

 in the Permian ground. This is made by the outcrop of a calcareous 

 band, 35 feet thick, composed of red sandstone, with a few inter- 

 calated layers of conglomerate near the base, containing pebbles 

 up to 1 inch in length. This band was pierced in the new Bromley 

 Colliery. The sinking was commenced on a platform of marls 

 which immediately underlies a trappoid breccia (D^), and passed 

 through the following strata ^ : — 



Feet. 



Soil and gravel (Drift) 23 



Red marl 1 p., 



-pi /Red rock J 



\ Cat-brain Rock (calcareous conglomerate) 10 



A^ Redrock 40 



A^ Red rock and Peldon 12 



Red marls, with irregular, slightly rounded nodules of sand- 

 stone 90 



The sinking then passed through a fault from Permian into Coal 

 Measures. 



This section is of especial interest in regard to the present enquiry. 

 Basing my remarks on field-work here and elsewhere, I consider that 

 the 90 feet of red marl is Lower Permian, as so great a thickness 

 of marl is not known to occur in the Middle Permian districts 

 where conglomerate-zones occur. Again, calcareous sandstone is 

 commonly called by miners ' Peldon,' and therefore this 12-foot 

 Peldon is probably Band A^ of the Middle Permian. The overlying 

 red rock is of the ordinary thickness of A^, with which I am inclined 

 to identify it. The conglomeratic horizon may be about 10 feet thick, 

 as given in the section, but this at the outcrop is surmouuted by about 

 25 feet of calcareous red sandstone, and thus the Ked E-ock and Cat- 

 brain Eock together probably constitute B\ There is no third 



1 Geol. Siirv. Vert. Sect. No. 49. 



Q. J. G. S. No. 217. I 



