Frof. James Park — Cretaceo- Tertiary of Neiv Zealand. 491 



Movement along these fault planes may have taken place at widely 

 difPerent times, but we cannot find a section which would enable us 

 to determine how far the basalt has partaken in the later movements. 



Our investigations have resulted in these discoveries in South 

 Staffordshire and North Worcestershire. 



The Aymestry and Upper Ludlow groups are about 70 feet thick, 

 as compared with 375 to 680 feet in the Ludlow district. 



The following measures occur which have not hitherto been found 

 at the surface : — 



Feet. 

 Lower Old Eed Sandstone, about ..... 200 



F. Temeside Shales and Bone-beds ...... 33 



E . Downton Castle or Yellow Sandstones with the Platyschisma 



shale 80 



D^ The Ludlow Bone-bed. Not over ..... 2 



315 



Taken as a whole, without going into minute details, there are 

 many similarities between the uppermost Silurian of Ludlow and 

 South Staffordshire. In both areas the Conchidium limestone, 

 Chonetes flags with the Ludlow Bone-bed, Downton Sandstone with 

 its associated Platyschisma shale, and Temeside Shales and Bone-beds 

 occur all in their regular order; and although some horizons do vary 

 lithologically and palseontologicully, yet these variations are such as 

 might be accounted for on the assumption that in South Staffordshire 

 and North Worcestershire the waters were throughout the period deeper 

 and clearer, resulting in thinner, finer, and more marly and calcareous 

 sediments being deposited, and in certain fossils, especially the 

 difi'erent species of Lingulm, surviving to higher horizons. 



"We heartily thank Mr. "Willetts and other officers of the 

 Birmingham Canal and Messrs. Doulton & Co. for the facilities 

 they have granted to us in connexion with our investigations, and 

 also Mr. Coulson, Principal of the Dudley Technical School, for the 

 use of the chemical laboratorv. 



III. — The supposkd Cretaceo-Tertiaky Succession of New Zealand. 



By Professor JAMES Park, F.G.S. 

 rilHE theory of a Cretaceo-Tertiary succession in New Zealand was 



T 



first formulated by Captain Hutton in the early seventies mainly 

 on the evidence of the Waipara sections in North Canterbury, where 

 there appeared to be an unbroken succession from the Cretaceous into 

 the Lower Tertiary. He correlated the Weka Pass Stone with the 

 Ototara Stone, and in the main his views were adopted by Sir James 

 Hector and the Geological Survey. 



Further investigation showed that the Ototara Stone in its typical 

 localities in North Otago and South Canterbury was conformably 

 underlain by a great succession of marine and terrestrial Lower 

 Tertiary strata, while in North Canterbury the Weka Pass Stone was 

 underlain by a great succession of Cretaceous strata. Obviously the 

 Cretaceous strata could not be the time equivalent of the Tertiary 



