14:2 Transactions, i 



correlated with the Otekaike limestone, both being referred to the Tertiary ; 

 while the basal part of the Maruwenua limestone was stated to be of the 

 same age as the Ototara limestone (Cretaceo-Tertiary). McKay asserted 

 that, although these three rocks are quite conformable at Maruwenua, 

 unconformity was deemed to be present, as the Otekaike limestone rested 

 directly on the subschistose rocks at Otekaike and Station Peak. He 

 gave a section _(1882b, p. 104) showing the relationship between the two 

 limestones, and the Hutchinson Quarry beds were shown above the lime- 

 stone at Otekaike. 



Hutton (1885, p. 547) described a section on the Rakaia River, Canter- 

 bury, at a locality called " The Curiosity Shop." The aim of the paper 

 was to show that the division of the rocks in this locality into a Cretaceo- 

 Tertiary and a Tertiary series was quite 'unjustifiable on either strati- 

 graphical or palaeontological grounds. In the course of the paper he 

 discussed the rocks and fossils of the Waitaki Valley, criticized adversely 

 McKay's arguments in favour of an unconformity anywhere in the series, 

 and showed clearly that the sequence at Wharekuri from the Hutchinson 

 Quarry beds down to the greensands forms a single series. In a later paper 

 (1887, p. 429) he again contended that the Otekaike limestone and the 

 Maruwenua limestone belonged to the same series. i 



Park (1887, p. 139) traced the Ototaran stone almost continuously from 

 Oamaru to Ngapara, where it rests conformably on greensands, the upper 

 part of the greensands being represented at Oamaru by the Waiarekan 

 tuffs. The limestone (at Ngapara) was said to have lost all the character- 

 istics of the fine Oamaru building-stone, yet " standing on the high hills 

 surrounding Ngapara it is quite obvious that the Ototara stone at one 

 time formed a continuous bed " {Iboc. cit., p. 140). Park (1904a, p. 416) 

 determined the succession of the younger Tertiaries in South Canterbury and 

 Otago to be, in descending order, (a) Oamaru stone, (&) marly and sandy 

 clays, (c) marly greensands, often with calcareous concretions, (d) quartz- 

 grits, fireclays, and coal ; and he stated that " the sandy Kekenodon 

 beds and underlying greensands, &c., form the base of the Tertiary beds 

 in the old Waitaki Fiord, and, proceeding westward, they ^ pass under a 

 yellowish-brown limestone, which McKay calls the Otekaike limestone. 

 I think there can be no doubt that this limestone is the horizontal equiva- 

 lent of the Ngapara (Oamaru) limestone. But, without laying any stress 

 upon the exact correlation of the limestones, we have in the Wharekuri 

 basin a section of the Oamaru series exactly parallel with that at the Waihao 

 River ; and there is little to wonder at in this parallelism if these beds, 

 as seems to me likely, were deposited on the floor of the same continuous 

 sea. The position of the sandy beds [the greensands], containing, as we 

 find, most, if not all, of the forms hitherto supposed to be typical of the 

 Pareora [Awamoan] series, at once raises a question as to the relations of 

 the Awamoa and other supposed Pareoras in North Otago to the Oamaru 

 stone." In a note (1904, p. 418) Park stated that he had since obtained 

 evidence in North Otago and South Canterbury which confirmed his con- 

 clusion l^hat the Pareora beds (Awamoan) underlie the Oamaru (Waitaki) 

 stone. 



Hamilton (1904, p. 465) described some vertical" faults striking north- 

 north-west at Wharekuri, and his section showed the Wharekuri green- 

 sands in contact with the quartz-grits along a line of faulting. Park (1905) 

 elaborated his position in regard to the position of the Pareora (Awamoan) 

 fauna beneath the Waitaki stone, and contended that there wete really 



