28 
The N.Z. Journal of Science and Technology. 
[Mar. 
mudstone is well exposed in Buxton Creek. Many layers are current- 
bedded, others are ripple-marked, and rapid alternations of mudstone and 
clayey sandstone form a considerable thickness of strata. In the upper 
part of the sequence a massive sandstone with many bedding irregularities 
is prominent. Evidently the whole series was laid down in comparatively 
shallow water. 
No fossils were collected from these beds during the visit made in 
November, 1919. Those found in 1917 were Epitonium lyratum and 
Rapana sp. cf. waihaoensis. 
Immediately south of the old landing at Port Robinson soft horizontally 
bedded sandstones form high cliffs. Near their base a conglomerate band, 
6 ft. thick, contains boulders of greywacke, limestone, argillaceous sand¬ 
stone, and spherical concretions derived from the neighbouring glauconitic 
beds. These beds, which in their upper portion contain numerous bands 
of conglomerate of well-smoothed greywacke peebles in a sandy matrix, 
form the ridge near Port Robinson and extend south-westward to Mount 
Seddon. The conglomerates of this series are in places strongly calcareous. 
Such a rock, forming its basal member, outcrops at the top of the high 
cliff south of the Jed a mile from the sea. A similar rock is exposed at 
several points along the road about two miles west of Port Robinson. The 
cliffs of massive greywacke-conglomerate behind Gore Bay, though separated 
from the bed at Port Robinson by a fault, were probably laid down as 
beach beds while the sands at Port Robinson were deposited off shore. Soft 
sandstones similar to those at Port Robinson, and containing bands of 
conglomerate consisting of smooth peebles of greywacke, are exposed along 
both sides of the Gower River at the road-crossing east from Phoebe 
Railway-station, and continue southward to the road east from Mina North 
Railway-station. A band of calcareous conglomerate or pebbly limestone 
was observed in this locality, and a similar rock outcrops half a mile 
south-east and again a mile north-east of Cheviot Township. The low 
hills extending west from the last-mentioned locality contain calcareous 
conglomerate for at least a mile, and probably the low downs north of 
Cheviot flats are carved from this group of strata. How far they stretch 
south or to what extent they help to form the slopes of Mount Catherine 
or the downs south of the Cheviot flats is unknown. In the map these areas 
are shown to be covered by the arenaceous mudstones so well exposed in 
the valley of Buxton Creek. 
In 1869 Haast collected fossils from a pebbly limestone on the flanks 
of Mount Caverhill. This rock is evidently part of the series here con¬ 
sidered, although no outcrop that could be referred to it was observed there 
Mr. Marwick has identified the following fossils from Haast’s collection 
(Loc. No. 216) :— 
Ancilla sp. 
*Calliostoma punctulatum (Mart.). 
Drillia sp. 
*Glycymeris laticostata (Q. & G.). 
*Mytilu$ eclulis L. 
*Paphia intermedia (Q. & G.). 
*Siphonalia mandarina (Duclos). 
*TurriteUa symmetrica Hutt. 
*Venericardia difficilis (Desh.). 
From soft sandstone outcropping beside the road along the Gower River, 
at a bend 65 chains south-east of Mount Ward trig., where the road begins 
