Vol. 60.] RH.ETIC OF THE SOUTH- WALES DIRECT LINE. 195 





*i 



- 



S 

 o 



IV. 



IIM 



II & 



Cotiiam Marble. Th ic,CHess in f eet inches ' 



Dark-grey shale 1 7 



White argillaceous limestone: ostraeods, Esther/a, 



and insects 3 



Dark-grey shale 3 



White argillaceous limestone, with variable shaly 

 partings and lenticular beds of hard gritty lime- 

 stone. Estheria minuta var. Brodieana is 



common in the white limestone 4 



(ii) Black shale, often very papery. Pecten valoni- 

 ensis, Cardium rhceiicum, and Schizodus 

 Ewaldi are abundant, Avicula contorta rare : 

 with them occur bands full of fish-scales, 



teeth, and vertebra? 6 



(i) Hard, black, compact limestone, sometimes 

 pyritous. Pecten valoniensis and Cardium 



rhceticum are abundant 4 



Shales etc. not well exposed for examination. 



(Grey or Tea-Green Marl.) 18 10 



At the western end of the south side of the very wide cutting 

 at Stoke Gifford, the Upper (but not the Lower) Beds of the Rhsetic 

 Series are exposed. The series is somewhat thicker than that on 

 the north side of the line, as is seen from the following section, 

 the beds on the two sides being numbered in correspondence : — 



inches. 



8 



V. 



IV. 



III. 



I 



Gotham Marble. Thickness infect 



Dark-grey shale 3 



White argillaceous limestone 



Dark -grey shale 4 



Thinly-bedded argillaceous limestone, with Naiadit* . 2 



Pale shale to base of section 



Pecten-bed, shown in a drainage-cutting at the base of 

 the slope. 



6 

 



6 seen 



The most noteworthy feature of this section, as compared with 

 that (which will be described on p. 197) lying to the east of Lilliput, 

 is the complete absence of the Bone-Bed. 



(b) The Lilliput or Chipping-Sodbury Section. 



A section of the Khaetic occurs, overlying the Keuper, at the end 

 of the Carboniferous-Limestone section west of Lilliput Bridge. 

 The beds here were, unfortunately, already much overgrown when 

 we first visited them. The section is as follows : — 



Compact limestone (Sun-Bed), with a somewhat ) Feet inches. 

 doubtful representative of the Cotham Marble, j 



Brown or greyish shale 2 



Pale argillaceous limestone 5 



Greyish shale 3 



Argillaceous limestone 7 



Darker, more crystalline limestone, with Pecten 

 valoniensis and bands of fibrous carbonate of 



lime (' beef ') 3 



Black, often papery, shale 12 



V & IV. 



Ill, II, I. 



1 



(Tea-Green Marl.) 



18 



