part 3] THE TRIAS OF NEW ZEALAIO). 165- 



7. TJie Teias of New Zealat^d. By Chaeles ^^¥*'"'^" "^^/f^^ 

 Teechma^-?.', D.Sc, F.a.S. (Read February 7th, 1917?) < 



[Plates XVII-XXV— Fossils.] MAY I 1919 



Contents. V '^it/n^ , .- t%<^* 



I. Introduction 165 



II. Nomenclature and Correlation 167 



III. Lithology, Thickness, and Tectonics 1 70' 



rV. Typical Areas of Triassic Rocks 173- 



(1) North Island : Kawhia area. 



(2) South Island : Nelson area ; Okuku ; Mount 



Potts ; Mount St. Mary ; Hokonui Hills ; 



Kaihiku Gorge ; Nugget Point ; Moonlight 



Range. 



V. Palseontology 181 



(a) Cephalopoda. 

 (6) Gasteropoda, etc. 



(c) Lamellibranchiata. 



(d) Brachiopoda. 

 VI. Synopsis of Divisions and Fossils of the New Zealand 



Trias: Table facing 237 



VII. Relation of the New Zealand Trias to that of New 



Caledonia and the Malay Archipelago 237 



VIII. Bibliography 239 



I. IXTEODrCTIOiN". 



New Zealand occupies the raost isolated and, so far as the 

 palseontology is concerned, one of the lesser-known links in the 

 great chain of folded marine Triassic sedimentary rocks which, 

 surrounds the Pacific Ocean. 



The presence of Triassic rocks of the Alpine tj^pe in Ncav Zealand- 

 was first made known as a result of the visit of the Austrian frigate 

 ' Novara ' in 1858 & 1859 and the researches of F. von Hoch- 

 stetter. Four species of Triassic fossils found on that occasion were 

 described and figured b}'- Zittel in 1864.1 These were Monotis 

 salinaria var. richmondiana Zittel, Spirigera icreyi Suess, 3fytilus 

 lorohlematicus Zittel, and Halohia lommeli Wissmann. 



The Nelson province was the only district where Hochstetter 

 obtained Trias fossils. He collected several Jurassic forms at 

 Kawhia Harbour on the western coast of the North Island, but 

 the Triassic deposits south of the harbour were discovered at a 

 later date. 



Since Hochstetter's visit the detailed geological survey of New 



1 Bibliography, 51, i p. 26-29. 



Q. J. a. S. No. 291. p 



