HENDERSON.—Post-Tertiary History of New Zealand. 585 
few remnants of marine terraces belonging to this period, and the mud- 
flats of Manukau Harbour continue above water as gentle slopes that rise 
to 70 ft. or 80 ft. 
The 200-300 ft. group of coastal terraces is well represented near 
Wellington by the Tongue Point platform, which is 240 ft. above the sea 
(92, p. 255). The low hills west of Evans and Lyall Bays are probably 
carved from a shelf of this period. Dissected littoral deposits occur near 
Pukerua Station (267 ft.), north of Plimmerton ; and, according to Adkin, 
raised beaches from 200 ft. to 240 ft. above the sea occur near Levin 
(89, p. 507). From Marton to Mangaweka the Wellington-Auckland Railway 
is built on an ancient flood-plain of the Rangitikei River, which stream is 
200 250 ft. be 
points. Small remnants 200-260 ft. high occur some miles north of Awakino 
(54, p. 13); the flat-topped isthmus of the peninusla between Kawhia 
ard Aetea inlets, which is 200 ft. above sea-level, consists of soft sands 
of Raglan a bench 190-230 ft. high, about 4 chains wide, and backed by 
an ancient sea-cliff, extends for half a mile along the coast. 
t Tongue Point there is a terrace-remnant about 450 ft. above the sea 
(92, p. 256); the flat-topped Mana Island slopes gently up to 440 ft. ; 
and the gravels at Johnsonville and those at rooklyn and Kelburn 
probably accumulated when the land was some 400-600 ft. lower. Accordi 
0 high, south of Shannon. Marshall 
states that gravels cap hills 500 ft. high near Wanganui (118, p. 47), and 
Morgan is of opinion that the land in this area was formerly at least 500 ft. 
lower than at present (103, p. 63). A little north of Urenui a well-dissected 
gravel-covered terrace rises from 450 ft. to 800 ft. Wave-cut benches from 
450 ft. to 650 ft. above the sea extend for miles along the coast north of 
Awakino (54, p. 13). The Marakopa district has certainly been uplifted 
500-700 ft., and an undoubted beach about 615 ft. above sea-level occurs at 
littoral deposits, at many points showing broad sloping surfaces 400-600 ft. 
above tide-mark. Mount Pirongia is flanked on the west by a gently- 
