PUKJBECK BEDS OF THE VALE OF WARDOTJE. 



251 



The Rev. Mr. Andrews has made a careful section of the railway- 

 cutting at Teffont, which shows the Hastings beds and the Middle 

 and Lower Purbecks. The Rev. 0. Fisher marked the divisions on 

 the section. Mr. Andrews is of opinion that no higher Purbeck 

 beds occur in his neighbourhood than those shown on the section, 

 and that the Hastings series were deposited upon the eroded Purbeck 

 strata ; the Purbeck strata continue 50 ft. or more below the base 

 of the railway- cutting, as there are many quarries in the neigh- 

 bourhood with many feet of Purbecks resting upon the Portland 

 beds. The section in the railway-cutting ends 7 ft. below the 

 " cinder bed but the quarry near the Rectory has been carried 

 19 ft. below the " cinder," into hard grey marls, which are burnt 

 for lime, and contain many fish, insects, Archceoniscus, Cyclades, 

 Cy prides, &c. 



The following is a detailed section of the Portland beds in the 

 railway-cutting, drawn up by Mr. Andrews, which, although similar 

 to the woodcut-section on p. 252, nevertheless enters more into the 

 particulars of the beds, both as to thickness and succession, and will 

 doubtless be found useful if the district is visited and examined : — 



No. ft. in. 



*1 



9. 



l 







10. 



i 



6 



11. 







6 



12. 







2 



13. 



1 







14. 







9 



15. 



1 







16. 



1 







17. 



1 



4 



18. 







19. 







9 



20. 







3 



21. 







3 



22. 







2 



1 1 



a J 



10 



11 



Surface. 



Brown earth, with scattered flints, passing into 

 Red and yellow sand, with a few scattered flints. 

 Grey sand with red streaks, passing into 

 Grey sandy clay, red and yellow layers. 

 Purplish red clay, laminated. 

 Green clay, light-red lines. 

 Layer of iron in laminas. 



Green clay, red irony lines of variable thickness, resting 

 unconformably on the bed below, and running down 

 amongst the lumps. 



Worn flint-shaped lumps of hard marl, vertical fracture. 



Sandy, with perished shells in laj'ers. 



Clay, red and grey, in lanrinse. 



Very red sandy rock, sometimes blue and grey, with large 



bivalves, Ostrece. 

 Limestone layers in sandy clay. 

 Thin laminated brown sandy limestone. 

 Hard sandy stone, often red outside, ripple-marks on 



the top. 



Composed of perished shells, thin layers of limestone 



and a line of "beef" about the middle. 

 Hed and yellow sand in layers. Ostrece. 

 Clay, thin-laminated, soft and yellow ; impressions of 



Archceoniscus. 



Hard blue and brown marl, Archceoniscus, Cyprides, 



Cyclas, Ostrece, insects' wings. 

 Laminated thin white limestone and sand. 

 Hard red sand rock, occasional streaks of blue ; oysters 



and impressions of large bivalves. 

 Soft sandy limestone. 



