I860.] 



MOORE LrNKSFIELD SHALES. 



445 



2. On the So-called Wealden Beds at Linksfield, and ilie Reptili- 

 feeous Sandstones of Elgin. By Charles Moore, Esq., F.G.S. 



(Abstract.) 



"When visiting the section at Linksfield, near Elgin, in the autumn 

 of 1859, the author recognized a similarity of appearance between 

 the shales and thin limestone-bands at Linksfield and those of the 

 Bone-bed series (at the base of the Lias) at Pylle Hill, near Bristol, 

 at Aust Passage and at Penarth, on the Severn, and at the Uphill 

 cutting on the Great Western Railway. Giving in detail the sections 

 at Pylle Hill, at Uphill, and at Linksfield, the author pointed out 

 some close lithological resemblances, and stated that he recognized 

 the "White Lias," the "Cothani Marble," the "Bone-bed," and the 

 gypseous clay-bands of the south in the quarry at Linksfield. Oyprides, 

 Estherice, remains of Hybodus, Lepidotus, Acrodus, and Plesiosaurus, 

 Mytilus, Modiola, TJnio, Cyclas, Astarte, Ostrea, Paludina, &c, from 

 the Linksfield beds, were among the palseontological evidences which 

 the author brought forward as supporting his correlation of the beds 

 in question. The following are the detailed Sections. 



1. Section at Pylle Hill, on the Bristol and Exeter Railway, near 



Bristol. 



ft. in. 

 Close-grained grey stone, with 

 Modiola ("White Lias"), the 

 lowest band being the " Cot- 

 ham Marble" or " Landscape- 

 stone." 

 Grey marl, passing into blue ... 4 



Stone 8 



Grey marl 6 



Stone 



ft. in. 



Grey marl, passing into blue ... 5 

 " Bone-bed," with Fish-teeth, 

 Modiola Hillana, Avicula, 



Ostrea, &c 3 



Blue marl 10 



Greenish-grey stone 3 



Bluemarl 2 



Grey stone 4 



Bluemarl 3 



The last graduates into red sandstone and marks, which in this 

 cutting are exposed to a depth of 30 feet. 



2. Section at Uphill, on the Great Western Railway, near Weston- 

 super-Mare. 



Lower Lias, about 50 



( Trias.) 



"Bone-bed" 2 



Indurated shale 1 •'! 



Gritty, grey, mieaeeous stone ... '» 7 



Marl, witli large nodules 5 



Stone 2 



Marl 1' <> 



Nodular stone •> 6 



Marl (» 9 



Nodular stone •'> 



Marl <» 8 



Stone <> -' 



Variegated marl 2 



Bubbly stone 3 



ft. in. 



Indurated marl 1 



Blue gritty sandstone 3 



Grey marl 2 



S.il'i ifi-itU sandstone 1 - 



Dark marl, passing into grey ... 1 4 



Thin eourso of green stono " ■"> 



Marl I 



Dull-blue tofaoeoos marl 1 - 



Light-grey stone •' 4 



.Marl O 1 



Conglomerate 1£ 



Marl O l" 



< in_\ Btone, « ith traoea of lu-h- 



scalee <> <» 



Grey slaty marl 2 



