508 



Transactions . — Geology . 



the mill than the cross-section shown in fig. 1, has been in- 

 truded partly along the plane of the clay-bed. The sill ends 



/eo 



/<so 



j\r 



/zo 



60 



lo/& 



Section near Clark's Mills, Maiikno. 



1. Dark-green tuffs, Waiareka tuffs, 60 ft. 2. Gritty sandstone, 4 ft. 3 in. 

 3-5. Grey clays intercalated with layers of coralline limestone, 

 5 ft. 6 in. to 7 ft. G. Yellowish-grey calcareous sandstone, 21ft. 

 7. Yellowish flaky clays, foraminiferous, 4 in. to 1 ft. Gin. 8. Sill of 

 olivine basalt, 22 ft. 9. Yellowish-grey calcareous sandstone, 7 ft. to 

 8ft. 10. Sill of olivine-basalt, Sin. 11. Yellowish-grey calcareous 

 sandstone, 25 ft. 



abruptly at the westward end. The detached mass of lime- 

 stone entangled in the basalt tends to show that the cal- 

 careous sediments had become partially consolidated before 

 the intrusion of the lava. 



Ska-coast near Kakanui Township. 



From Kakanui Township northward for some distance the 

 beach is bounded by steep cliffs, and in many places is only 

 accessible at low tide. The Tertiaries which form the cliffs 

 bounding the small bay or indentation between the quarry 

 and Trig. T, a quarter of a mile to the north, are lying com- 



