Zonal schemes in ancient ignimbrites
Summary Zonal arrangements in ancient ignimbrites have usually been interpreted as a reflection of variations in welding. Detailed study of two Lower Palaeozoic ignimbrites from Newfoundland demonstrates that crystallization zones can also be recognized and that in some cases it is these zones which...
| Published in: | Geological Magazine |
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| Main Author: | |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Cambridge University Press (CUP)
1971
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1017/s0016756800051116 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0016756800051116 |
| Summary: | Summary Zonal arrangements in ancient ignimbrites have usually been interpreted as a reflection of variations in welding. Detailed study of two Lower Palaeozoic ignimbrites from Newfoundland demonstrates that crystallization zones can also be recognized and that in some cases it is these zones which are responsible for the gross features of the cooling unit. |
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