Prof. J. Park — Tertiaries and Cretaceous, New Zealand. 545 



The Tertiary sequence is almost identical "with that found in other 

 parts of New Zealand, being as follows : — 



Tertiary Series. 



Feet. 



1. Limestones ........ 125 



2. Greensands ........ 125 



3. Brown and grey sandstones ..... 460 



4. Quartzose sands, grits, and conglomerates, with 



seam of brown coal ...... 260 



The thickness of the whole series is about 970 feet. 



The characteristic fossils of the Upper Oarnaruian are abundant, 

 including Pseudamusium huttoni, Cirsotrenta hroicni, Meoma crawfordi, 

 and Kekenodon onemata. The Cretaceous rocks are represented by 

 only the lower members of the Waipara Series, as follows : — 



1. Sandstones and shales. "1 tt ■+ t TT 



2. Greywacke conglomerates, with shales and seams of !- „ , ^ 



u iocj?ii -IOJJJ. I Coal-measures, 



brown coal, one 35 ieet and one 18 feet. J 



3. Brown sandstones and shales. 1 Kaitangata Lower 



4. Sandstones, with calcareous layers ; fossiliferous. I Coal-measures 



5. Quartzose sands, bands of conglomerate and shales, f (Castle Hill and 



with seams of brown coal. J Taratu Coals). 



The total thickness of these beds is about 1,450 feet, as compared 

 with the 260 feet of the corresponding Coal-measures of the Tertiary 

 Series. Moreover, the great bands of greywacke conglomerate, so 

 conspicuous in the Kaitangatas, are unrepresented in the Tertiary 

 Series. 



The Tertiary Series contains only Tertiary forms ; but the fossili- 

 ferous sandstones of the Kaitangata lower measures contain, among 

 numerous well-preserved fossils, Belemnites lindsayi, Cucullcea alia, 

 Conchothyra parasitica, and Rostellaria, forms which connect these beds 

 with the Cretaceous Shag Point and Waipara formations. 



Relationship of Waitemata Series to North Auckland Coal Series. — 

 The North Auckland Coal Series consists of the following members : — 



1. Sandstones. 



2. Hydraulic limestones. 



3. Greensands, with septarian boulders. 



4. Semi-crystalline limestone. 



5. Soft sandstones and shales, with seams of pitch coal. 



6. Conglomerates and sandstones. 



The septarian concretions that occur in the greensands are covered 

 with an exterior skin of cone-in-cone limestone, and frequently enclose 

 Saurian bones. The Cretaceous age of this series is not in doubt. 



The Tertiary Waitemata Series is now acknowledged by all geologists 

 to belong to the Oarnaruian, a relationship based on the strongest 

 palseontological grounds. 



In my examination of the Auckland district in 1885, I found 

 blocks of the hydraulic limestone in the Lower Waitematas near 

 Howick and Onehunga, and the following year discovered on the 

 coast near Wade a beautiful section showing the Waitemata resting 

 unconformably on the Cretaceous rocks. 



DECADE V. — VOL. VHE. — NO. XII. 35 



