49i) 



[IVc. 18, 



18y;iriliS, wliioh lie above tlie disturbed stnita, are omitted in the 

 lig'iire. 



The strata overlyina; tlie chalk, as exhibited in vertical section 

 over the line o, u in tlic ground plan, were the following, in de- 

 scending order : — 



Li)mn, with patdies of }i;ravel 

 «i. Sand, with seams of gnivel 



7. Chiy - - - . 



/(. S:iiul - - - - 



i. Dark brown gravel, about 



h. Ferriiiijinoiis sanil 



;/. Yi'llow sand, about 



/; Forruguious sand, about 



t: Whitish sand, about - 



(/. Clay - - - - 



f. Yellow sand, .ibout 



h. Clay, whitish towards the bottom 



a. Solid clialk 



3 6 



2 



3 9 



9 



1 3 



2 

 1 G 



;i o 



I 



- 19 

 Feet 70 



I met witli no crag shells in these strata at the i)it at Thorpe. 



About midway between the points o and M, and near the point 

 o, in the gronnd plan, some of the lower of the above super- 

 cretaceous vStrata were faulted in the manner represented in 

 Fig 6., the greatest perpendicular displacement being about 2 feet : 



6.* 



ai,xjJ!'Sg^jgry\^^v>^-wg^***t-«»w^v»^^ 



but those strata in that section, whose vertical distance from the ', 

 clialk exceeded 16 feet, remained mulistnrbed and horizontal. 

 From the sequel it will appear probable that tins displacement is 

 owing to the occurrence of a sandpipe in the chalk, to the Avest of 

 the line G M ; but the existence of such a cavity was not proved 

 in this instance ; for, during my visits to the chalkpit, the clearing 

 of the chalk had not proceeded beyond the line in question. 



* The references to this diagram are given in the above table of the strata 

 overlying the elialk. 



