80 Transactions. 



An exactly similar section occurs on the north wing of the syncline where 

 the road comes down on to the beach near the old lime-kiln. This locality 

 is also noteworthy since the limestone contains abundant nodules of flint. 

 There is no evidence of unconformity. A similar junction occurs on the 

 steep scarp facing the Jed Kiver, but farther north-west, on the south side 

 of the road leading to Cheviot, we weie unable to locate it definitely owing 

 to the covering of grass where the loose greensand had been removed ; but 

 the borings in the limestone were noted in various places, so no doubt a 

 similar contact exists there as well. 



South Bank of the Hurunui. 



On the south bank of the Hurunui, half a mile up-stream from the lowest 

 bridge and about a mile from the sea, the whole series from the greywacke 

 upwards is clearly exposed on the river-bluffs. The section consists of the 

 following : — 

 (1.) Sands. 



(2.) Amuri limestone, over 50 ft. thick, with a north-and-south strike, 

 and a westerly dip of 10°. It is of the usual character, the upper 

 4 ft. perforated with borings, the cavities filled with greensand. 

 Included in the limestone are lenticules of greensand, and in the 

 uppermost 2 ft. this condition is more pronounced, typical green 

 nodules occurring sporadically. 

 (3.) Nodular layer : This is 6 in. in thickness, the nodules being dark 

 green to brown in colour, up to 2 in. in diameter, subangular, 

 the whole layer being densely compacted with greensand cement. 

 (4.) Calcareous greensand, soft, very glauconitic, and containing nodules 



scattered through the lower 2 ft. 

 (5.) Calcareous greensand, 30 ft. thick. A fragment of coal 3 in. in length 



and 1 in. thick, lignitic in character, was noticed in this bed. 

 The section is closed by brown sands. Parts of the section are faulted, 

 but where there is no evident disturbance the conformity is clearly dis- 

 played. Especially is this the case on the river-cliffs. In a cutting on the 

 road in close proximity water-worn pebbles of greywacke are apparently 

 involved near the junction, but they also occur in greensand 2 ft. above 

 the junction ; the occurrence is only a few feet in length, quite local, and, 

 as the rocks show disturbance, may be attributed to fault or slip movements, 

 since no similar phenomenon was observed elsewhere. 



On Coast South of the Blyth River. 



This section can be seen near the top of the magnificent limestone cliffs 

 which form the background of the Napenape beach, one of the finest coastal 

 scenes in New Zealand. Here old shore-platforms with beach-gravels on 

 top occur at a height of 500 ft. The sequence exposed is as follows :— 



(1.) Amuri limestone: This strikes north-east, and dips south-east at 

 low angles ; it is probably affected by slight local folding, but, 

 owing to slipping, the precise direction is difficult to determine ; 

 its thickness is at least 300 ft. The rock is beautifully white, 

 compact in texture, jointed in typical fashion, but much disturbed 

 by slips and faults owing to erosion of the shore and to natural 

 fractures. A small mollusc shell was found in the upper layer, 

 which has been identified by Mr. Suter as a variety of Pecten 

 williamsoni. 



