170 NOTES ON THE LIAS IN THE NEIGHBGUEHOOB OF EADSTOCK. 



Quarry at Eadstoch, near the Wells Road. 



Grey clay with phosphatic 

 concretions 



Spiriferina TFalcottn, 



Rhynchonella variabilis^ 



Gryphcea arcuata, ^c. 



Dark grey limestone, ipt. thick. Spiriferini Walcotti^ S^c. 



Grey shaley clay. 



Gy. arcuata. 



Grey limestone— another thick bed. 



Nodular limestones, several beds 

 amounting to a few feet in 

 thickness. 



Lima gigantea. 



31 limestones, frequently with clay 

 partings, mostly greyish white 

 in colour. The lower beds are 

 called "Corn-grits" by quarry- 

 men. 



Near base, 

 Ostrcca Hisingeri, 

 Modiola minima. 



Above the White Lias we have 28ft. of beds, which are 

 certainly Lower Lias ; further, we have here represented the 

 Planorbis and Biicklandi zones. Ammonites planorhis we have 

 found on the stone heaps, and the beds of this zone are represented 

 by those immediately above the White Lias. Ostrea Misingeri 

 (liasica) and Modiola minima^ which occur at this level, are 

 characteristic shells of the zone. 



The middle part of this quarry is inaccessible, except at one end, 

 and there it is difficult to obtain much, as that end has not been 

 worked for some time. I cannot pretend now to draw any line 

 between the Planorbis and higher zones in this quarry, even if 

 such exists. At some future time the middle beds of the 

 quarry may become more workable. Towards the top the beds 

 contain Lima gigantea and punctata abundantly, and belong 

 possibly to the Bucklandi zone. 



