Revieius — New Zealand Geology. 551 



IX. — The Euitor Glacier Lakes (Piebmontese Alps). By C. S. 

 Du E,icHE Prellee. Scottish Geographical Magazine, vol. xxiv, 

 pp. 330-342, with 5 text-figures, 1918. 



THE author gives a detailed description of several small lakes, 

 some of very recent origin, formed in the course of the retreat 

 of the liuitor glacier, either at its margin or at the frontal base of 

 the glacier tongue. Some of these lakes, which bear some 

 resemblance to the Marjelen See of the Bernese Oberland, have at 

 times been the cause of disastrous floods in the Dora Baltea valley. 



X. — JS^EW Zealand Geology. 



1. The Stratigraphy of the Tertiary Beds of the Castle Hill 

 or Trelissick Basin. By E. Speight. Trans. New Zealand 

 Inst., vol. xlix, pp. 321-516, 1916. 



THIS basin, which is situated in the heart of the mountain region 

 of Canterbury, is about 8 miles long by 4 miles wide, and 

 contains an interesting series of sedimentary deposits, with some 

 volcanic material. The strata, which consist of sands and sandstones, 

 greensands, shale, coal, and limestones, are richly fossiliferous. 

 Certain beds low in the series contain plant remains of decidedly 

 Tertiary character, including Quercus, Planer a, Drpandr a, and Cassia, 

 but these are overlain by marine sediments containing Cretaceous 

 sliells. Higher still the proportion of recent forms gradually 

 increases, and the author considers that the succession fi'om 

 Cretaceous to Tertiary is continuous, since he finds no indication of 

 unconformitv, as maintained by earlier writers. 



B. H. K. 



2. An Unrecorded Tertiary Outlier in the Valley of the 

 Bakaia. Bv B. Speight. Trans, New Zealand Inst., vol. xlix, 

 pp. 356-60,''l916. 



rpHE author gives in this paper a description of a newly-discovered 

 _L occurrence of Tertiary strata in the valley of the Harper Biver, 

 a tributary of the Wilberforce, which is itself one of the main 

 feeders of the Bakaia, in the Canterbury district. The Tertiary 

 deposits cover an area of some 5 miles long by 2 or 3 broad, and 

 consist of sandy clays with impure lignite, greensands, concretionary 

 sands, and shell beds, the fossils indicating a mid-Tertiary age. The 

 occurrence of the outlier in this position is explained as being due to 

 faulting, the main part of the series having been removed by erosion 

 at higher levels. The walls of the valJey itself are remarkably 

 straight and suggestive of a rift, and are parallel to the dominant 

 fault-lines of the whole area, the Kaikoura fractures of McKay and 

 Cotton. This region also affords evidence of some interesting 

 modifications of drainage, which may be due either to very recent 

 movements along •^-u^' -lines or to glacial barriers. 



B. H. B. 



