Petrography of the Whakapapanui Gorge Andesites, Mount Ruapehu
- 1 May 1959
- journal article
- research article
- Published by Taylor & Francis in New Zealand Journal of Geology and Geophysics
- Vol. 2 (2) , 412-420
- https://doi.org/10.1080/00288306.1959.10417659
Abstract
Petrological study of the andesite lavas exposed in Whakapapanui Gorge on the northern slopes of Mt. Ruapehu reveals constant mineralogical composition of flows. All are porphyritic andesites with phenocrysts of plagioclase, hypersthene, and augite set in a hyalopilitic groundmass. Slight variations in texture sometimes occur between and within flows of lava.Keywords
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