File:Transactions of the Royal Society of New Zealand (1888) (14761452206).jpg

Identifier: transactionsofro88roya (find matches)
Title: Transactions of the Royal Society of New Zealand
Year: 1888 (1880s)
Authors: Royal Society of New Zealand
Subjects: Science
Publisher: Wellington, N.Z. : The Society
Contributing Library: Brigham Young University Hawaii, Joseph F. Smith Library
Digitizing Sponsor: Consortium of Church Libraries and Archives

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o a wide basin of water eaten out of softer rocks.Some of the finer pumiceous sands here contain such anabundant siliceous cement of siliceous sinter that to the nakedeye they have the half-glassy appearance of a pitchstone, andhave, indeed, been described as lavas. A few miles further on, however, the Waikato crosses aseries of lava-streams, and the harder rocks have led to theformation of the beautiful rapids known as the Aratiatia Falls.The lavas are rhyolites, chiefly of a glassy character, spheru-litic obsidians being well developed. Volcanic Fissures in the Taupo Zone.—We have alreadyseen that the Tongariro-Euapehu group of volcanoes arearranged in a straight line, which doubtless represents afissure in the earths crust by which the molten rocks haveforced their way to the surface. It affords, indeed, a re-markable instance of a number of volcanic vents arrangedclose together on the same fissure. We have the huge mass Inroswitfatt* Tim ;tyrf»gi Institute, Vol. xxr. pi. xxvin.
Text Appearing After Image:
Irmtsaijlhjits If^ur gtyttogi ^ttstitofc, Vol. xxi. pi.xxix.

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