Transactions of the Royal Society of New Zealand . y strongby the deposition of inter-lacing quartz veins fillingthe joint-planes. Corresponding to theregular strike and the steepdip of the strata and theirvarying strength, there is awell-marked arrangement ofridges and valleys parallelto the strike. This mayeasily be recognized on amap, and in the field it isfound to be the dominantfeature of the fig. 1 the straight andparallel courses of theOrongorongo and Wainuio-mata are especially notice-able. Parallel to these theentrance to Port Nicholsonand the Evans Bay - LyallBay depres
Transactions of the Royal Society of New Zealand . y strongby the deposition of inter-lacing quartz veins fillingthe joint-planes. Corresponding to theregular strike and the steepdip of the strata and theirvarying strength, there is awell-marked arrangement ofridges and valleys parallelto the strike. This mayeasily be recognized on amap, and in the field it isfound to be the dominantfeature of the fig. 1 the straight andparallel courses of theOrongorongo and Wainuio-mata are especially notice-able. Parallel to these theentrance to Port Nicholsonand the Evans Bay - LyallBay depression will benoted. On the Wellington Fig. 1Peninsula itself (see also fig. 2) one continuous valley, occupied by the Karori, Makara, and OhariuStreams, is well marked. The position of another is indicated by thesettlements of Karori and Khandallah; it continues southward somedistance, and its northward continuation is the Porirua Valley. Even thehigh bluff of Cape Terawhiti is almost cut off from the neighbouring landby a deep north-south TytAKtRAp -Locality-map of the Wellington District. Land Features. The adjustment of stream-courses to structure, an arrangement which,with exceptions that will be noted, has been retained by existing streams,points to prolonged exposure to subaerial denudation for the duration ofat least one nearly completed earlier cycle of erosion. The existing topo-graphy is composite, and has been developed during an uplift of at least800 ft., and perhaps of 1,000 ft. or more. The amount of uplift seemsto have been nearly uniform, although probably not quite uniform,over the area studied. During the uplift pauses occurred, some of which Cotton.—Notts on Wellington Physiography. 247 were long periods of standstill. Further complications have been intro-duced by the subsidence of a block—Port Nicholson and the low-lyingpeninsula to the south of it (fig. 1)—resulting in piracy and obliteration ofearlier topography in the high-standing block by
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectscience, bookyear1911
