Transactions and proceedings of the New Zealand Institute . nite, withleaves of Dicotyledons .. and Conchothyra v^ \^x/ \^^^\^ 1. 30-60 Sandstone and lignite. with leaves of Dicoty- ledons «>Eep. Geol. ExpL, 1870-71, p. 9. In mineral characters the Amuri limestone at Waipara andWeka Pass closely resembles the limestone which forms theupper member of the system in Trelissick Basin, and 1 haveelsewhere shown that in the Weka Pass District the Amurilimestone is the upper member of the Waipara. System ;f so that,stratigraphically and lithologically, they appear to bo the are equally d
Transactions and proceedings of the New Zealand Institute . nite, withleaves of Dicotyledons .. and Conchothyra v^ \^x/ \^^^\^ 1. 30-60 Sandstone and lignite. with leaves of Dicoty- ledons «>Eep. Geol. ExpL, 1870-71, p. 9. In mineral characters the Amuri limestone at Waipara andWeka Pass closely resembles the limestone which forms theupper member of the system in Trelissick Basin, and 1 haveelsewhere shown that in the Weka Pass District the Amurilimestone is the upper member of the Waipara. System ;f so that,stratigraphically and lithologically, they appear to bo the are equally destitute of fossils. The ofticers of the Geolo-gical Survey correlate this limestone with the Weka Pass stone,but I cannot see on what evidence they rely. Certainly it dotsnot contain any of the fossils charactLiistic of the Weka Passstone, which are similar to those of the Curiosity Shop beds J, t Quar. Jour. Geol. Soc. of London, vol. xli., p. 266.\ Quar. Jour, Geol. Soc. of London, vol. xli., p. ItunsatJinns IJcm Iteafonb pstitutc^ Vol. XIX., I,I lljifT^ UPPtR =] GKe cN SASosroNC y- >. % [_|-[,[-|_|-[^ Loirefi Lines roME I > OYK£5 \ GEOLOGICAL MAf THE TREUSSIC BASIK To tUasbraJU^afw Z,y ^ MAD TO YfeST OOAST S tVILtS. HuTTON.—Geology of the Trelissick Basin. 401 and these are represented in the Trehssick Basin by the upperlimestone which forms Castle Hill. The correlation of the Waipara System with any Europeanequivalent at present presents considerable difficulties. Theoccurrence of Plesiosaurns above beds containing leaves ofdicotyledonous angiosperms would seem to indicate an uppercretaceous age; but Mt/Hobatis (which is here thought to be onthe same horizon as Plesiosaurns) has never yet been found inthe Northern Hemisphere in any mesozoic rock. I have oftenprotested against the cretaceo-tertiary formation as defined bythe Geological Survey ; but this has been, not because I denythe possibility of the Waipara period ex
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