86 Transactions. 



Main Branch of Weka Creek. 



This section occurs in the main branch of Weka Creek, below the small 

 bridge on the road from Weka Pass in the direction of the Waipara River 

 to the north-west of the Deans Range. The junction between the Weka 

 Pass stone and the overlying marl is well seen in the bed of the creek and 

 on the sides of the deep but narrow gorge where the road crosses. The 

 agreement in dip is absolute, and the contact does not show any signs 

 of unconformity. The Weka Pass stone exhibits on its upper surface 

 the same kind of borings which mark the contact of the two limestones, 

 but the bored zone is narrower. This is succeeded b} r 1 ft. of slightly 

 glauconitic sandy marl, then by 12 ft. of slightly glauconitic sandstone, 

 passing up into sandy marl and becoming more argillaceous higher up 

 but still preserving something of its arenaceous nature. 



Near Old Wharf, North Side of Kaikoura Peninsula. 



The upper surface of the Amuri limestone is tily in character, as at 

 Amuri Bluff, with lenticules of grey marl included in the limestone, as also 

 there are inclusions of limestone in the grey marl, the inclusions being more 

 phosphatic than the limestone and marl in general, which are practically 

 free from phosphate. The marl is decidedly glauconitic near the contact, 

 and presents all the features of a fine-grained glauconitic sandstone, the 

 sandy facies extending for 10 ft. or 12 ft. above the contact. The contact 

 is conformable stratigraphically, any divergence from a normal junction 

 being due to folding or faulting. 



East Side of Kaikoura Peninsula. 



The general strike of the beds is north-east. The Amuri limestone is 

 much contorted, brecciated by folding, faulted, and, as a result of these 

 structural movements, crystalline in many parts and at times subschistose 

 in appearance. The grey marl is folded on the same lines, and sometimes 

 included in the limestone as a result of folding. The grey marl has been 

 subjected to just the same intensity of deformational movement as the 

 limestone, but it exhibits the results of these movements to a much smaller 

 •degree except at the immediate contact with the limestone, where it is 

 subschistose in structure. The whole locality exhibits faulting, some of 

 the major faults running north-north-east parallel to the general trend of 

 the coast-line of the Island, but there are numerous others crossing at right 

 angles, so that the whole locality may be described as a complex of faulted 

 anticlinoria and synclinoria, but wherever the junction between the marl 

 and the limestone is clear the junction is conformable. It might be noted 

 here that Hutton's figure of the East Head (1885, p. 273) is entirely 

 incorrect. 



On the south side of the peninsula, near the Maori village, the contact 

 is of the same character as on the north side. The Amuri limestone is 

 slightly glauconitic, becoming more so near the junction. There is a layer 

 about 6 in. thick where the limestone and the marl are mixed, a phenomenon 

 which is in part due to boring. The grey marl is glauconitic in its lower 

 part for a thickness of several feet, and contains numerous fragments of 

 whale-bone. Along the line of contact faulting is much in evidence, the 

 faults being both normal and reversed, with a direction in general at right 

 angles to the strike. The figure by Hutton (1885, p. 273) is evidently 

 given under a misapprehension of the effects of faulting, the irregular line 

 of contact being attributed by him to erosion. 



