Speight and Wild. — Weka Pass Stone and Amuri Limestone. 83 



limestone, followed by greensand with inclusions of Amuri limestone, 5ft. 

 thick in one place, and containing distinctly angular, black phosphatic 

 pebbles. In some parts of the contact the Amuri limestone has inclusions 

 of greensand, the latter being in relatively small amount. This is suc- 

 ceeded by 12 in. of nodular layer of the usual type, and followed then by 

 glauconitic limestone with small green nodules and black nodules. As the 

 band is traced north and south from the point under consideration the 

 greensand is not so prominent but is mixed with Amuri limestone, which 

 is especially glauconitic on or near the junction. 



Near Maori Village on South Side of Kaikoura Peninsula. (Plate VII, fig. 1.) 



The contact is well exposed in this locality on the raised shore-platform 

 which covers a large area on the south side of the peninsula. The follow- 

 ing sequence in ascending order occurs here : — 



(1.) Amuri limestone, of the usual type, but rather more flaky than 



jointed, perhaps the effect of faulting. 

 (2.) Fault, almost parallel with the strike, with a small but increasing 



throw when followed to the south-west. 

 (3.) Calcareous greensand from 8 in to 10 in. thick, showing honey- 

 combed borings filled with glauconitic limestone, together with 

 masses of greensand of irregular form. The lower part is filled 

 with cavities, some of the worm-bored type, while others are 

 much larger and irregular in form, the whole being filled with a 

 uniform type of calcareous greensand. In the upper portion the 

 worm-casts and greensand masses are smaller. 

 (4.) Nodular layer : The nodules are green and black, and the structure 

 is very well developed, so that the intervening spaces are small. 

 These are filled with calcareous greensand. 

 (5.) Glauconitic limestone, 4 in. to 5 in. thick. 

 (6.) Greensand, |- in. thick. 



(7.) Glauconitic limestone, rather more glauconitic than (5), 5 in. 

 (8.) Greensand, 1 in. 



(9.) Glauconitic limestone, more glauconitic in the lower layer but passing 

 up into one which is less glauconitic, 10 in. 

 (10.) Limestone, of Amuri type, with flints, 6 in. 

 (11.) Glauconitic limestone, with only a small amount of glauconite. 

 (12.) Amuri limestone as typically developed, 120 ft. in thickness. 

 This section shows no sign of unconformity. 



North of Atiu Point, East End of Kaikoura Peninsula. (Plate VII, fig. 2.) 



The contact is well displayed in this locality on the shore-platform at 

 the base of the cliffs and on the cliffs themselves. The following is a 

 description of the beds in immediate proximity to the contact : — 



(1.) Amuri limestone. 



(2.) Calcareous greensand : The rock is bored in the usual manner and 

 the interstices filled with calcareous greensand, and becomes 

 more glauconitic upwards, and contains nodules green in colour, 

 irregular in shape, up to \ in. in diameter. This merges gradually 

 into the nodular layer. 



(3.) Nodular layer, consisting of phosphatic nodules, more continuous 

 than usual, the progressive development being more marked, the 

 nodules being in a cement of calcareous greensand. 



(4.) Limestone, 1\ in. thick, with nodules in small number. 



