Panx.— Relation of Oamaru Limestone and Waitaki Stone. 83 
stone at one time formed a continuous bed.” 1 now know how fallacious 
an observation made from a distant hilltop may be. Clearly, the obvious, 
as cogently argued by Carlyle, may easily conceal the truth. 
e summer of 1916-17 the mapping of the area lying to the west 
of the railway-line for the first time disclosed the error I had fallen into 
in 1886 in concluding from a bird's-eye view of the country that the Oamaru 
and Ngapara limestones were part and parcel of the same sheet. 
In 1920 I spent two weeks, and in the present year four weeks, in the 
coastal dnd western parts of the Oamaru and South Canterbury districts, 
concerning myself mainly with the position of the Liothyrella boehmi horizon 
and the relationship of the Oamaru and Waitaki stones. again traced 
the Waitaki stone to Ngapara and Tokarahi, and examined the country 
between Enfield, Windsor, Big Hill, and Маарага. 1 satisfied myself that 
I was right (1904, 1910, and 1918) in regarding the Waitaki, Maruwhenua, 
Ngapara, and Tokarahi stones as part and parcel of the same sheet; and, 
of no less importance, confirmed my survey of 1918, which showed that 
the Oamaru stone does not connect with, or come within many miles of, 
the Ngapara limestone. Р 
Among other places I revisited this year was the high ground overlooking 
Windsor Junction. From this elevation the Oamaru-stone escarpment 
this to Table-top Hill. The escarpment now trends north-west in the 
direction of Big Hill, giving the impression as viewed in perspective that 
the Oamaru stone forms the cap of Big Hill itself and of the scarp-bounded 
Along the eastern or coastal fringe of the anticline the strata are bent 
into minor synclinal and anticlinal folds. The best developed of these is 
the Awamoan syncline, a N.W.-8.E. fold which closes to the north-west, 
where it: gradually merges into the eastern limb of the major anticline. 
I have recently examined many of the fine natural sections in the Waihao 
Waihao stone is the horizontal equivalent of the Oamaru stone implies 
no evidence. Clearly, if the Mount Harris beds are Awamoan, the Waihao 
* J. Park, The Geology of the Oamaru District, N.Z. Geol. Surv. Buil. No. 20 
(n.s.), p. 110, 1918. 
