Vol. 67.] 



WEST. MID, AND EAST SOMERSET. 



53 



bottom-beds of the Lower Lias, here called the ' Blue Lias,' are 

 excellently displayed. Moore measured the section, and to the 

 extreme accuracy of his record I gladly bear witness. 1 He 

 did not observe any exposure of the Pteria-contorta Shales near 

 Stoke St. Mary ; but their junction with the underlying marl may 

 be seen in the lane east of Stoke Court. 



(E) The AYedmore Inlier. 



The total thickness of the Rhsetic Series in this inlier has not 

 been ascertained. 



The Bed Marls are exposed at many points, and at Panborough 

 have the Tea-green Marls faulted against them. The Tea-green 

 Mails are also visible at several places, notably in the roadsides at 

 Bagley ; while between Theal and Bagley, in Snake Lane, Eed 

 Marls, Grey and Tea-green Marls, and the Pteria-contorta Shales, 

 with their associated hard beds, are exposed. 



The Snake-Lane Section is not so clear as it was in the days when 

 Prof. Boyd Dawkins investigated it 2 ; but, with a little care, the 

 following succession can be determined : — 



Snake-Lake Section, near JBag-ley. 



[12] 3 14. 



[11] 15 



[10] 16. 

 _ t [9] 17, 



2 ! w 18. 



£1 [7] 19. 



("20 



[6. ] 21 



(22 



[5 J 



»{ 



[5] 23. 



24 

 to 



26. 



[3] 

 LT2] 



Thickness in feet 

 C Shales, black and grey, with reddish 



I sandy layers : seen 1 



fThe Bone-Bed. Sandstones, hard, 

 I pale gTey, calcareous, in three to six 

 <{ layers with shale-partings. On the 

 I weathered surface is much shell- 



[_ debris ; average 1 



( Shales, black and greenish - grey, 

 (_ with reddish-brown sandy layers . 4 

 ( Limestone passing into a sandstone : 



(. average 



Marl, yellowish, sandy, laminated... 

 ( Limestone, hard, grey, passing into 

 (. a sandstone of 'bone-bed' nature . 



Shale, yellowish, sandy 



Sandstone 



Shale, yellowish, sandy 



( Sandstone,full of vertebrate-remains, 

 \ passing into a compact limestone . 



C Shales, black : about 6 



-< Sandstone, soft, reddish-brown 



(. Shales, black, clayey : about 1 



'Wedmore Stone.' Limestone, 

 hard, grey and often blue-centred, 



shelly, massive : 1 to 3 feet 2 



Shales, black, cla}'ey : about 4 



inches. 

 6 



1 

 5 



1 



4 



^Acrodus minimus Ag., 

 Gyrolepis alberti Ag. 

 (scales and teeth), Iso- 

 cyprina eivaldi (Born.), 

 Mytilus sp., gastropoda 

 (several species, etc.). 



Fish-remains. 



Usual fish-remains ; Proto- 

 cardia rhcetica (Merian). 



SIsocyprina spp., small 

 gastropoda, and occa- 

 sional fish-remains. 



Grey and C Marls and marlstones, whit- 



g I Tea-green Marls. 4 \ ish and greenish-grey 20 



t> -{ C Red marls, with zones of 

 Red Marls. < grey and mottled marl : 

 L (. seen 20 



M 



1 Q. J. G. S. vol. xvii (1861) p. 490; see also ' The Geology of the Country 

 between Wellington & Chard ' Mem. Geol. Surv. 1906, pp. 26-27. 



2 Q. J. G. S. vol. xx (1864) p. 403. 



3 These correspond to the numbers of the beds in Prof. Boyd Dawkins's 

 section. 



4 Additional details of these deposits will be found in Prof. Boyd Dawkins's 

 paper. 



