Occurrence of ignimbrite in the Shag Valley, North-east Otago
- 1 May 1959
- journal article
- research article
- Published by Taylor & Francis in New Zealand Journal of Geology and Geophysics
- Vol. 2 (2), 380-384
- https://doi.org/10.1080/00288306.1959.10417656
Abstract
Petrography of the acid igneous rock of the Shag Valley in North-east Otago, previously classified as a quartz porphyry, indicates that this rock is an ignimbrite. Formerly described as a dyke, the Shag Valley rock is now considered to be a surface rock interbedded with coal measures of Upper Senonian age, and is the first occurrence of ignimbrite described from the South Tsland of New Zealand.Keywords
This publication has 3 references indexed in Scilit:
- Petrogenetic implications of the 1954 Ngauruhoe lava and its xenolithsNew Zealand Journal of Geology and Geophysics, 1958
- Cainozoic petrographic provinces in New Zealand and their residual magmasAmerican Journal of Science, 1941
- Progressive Regional Metamorphism in Southern New ZealandGeological Magazine, 1938