Tracing pre-eruptive magma degassing using (Pb-210/Ra-226) disequilibria in the volcanic deposits of the 1980-1986 eruption of Mount St. Helens
Disequilibria between 210Pb and 226Ra can be used to trace magma degassing, because the intermediate nuclides, particularly 222Rn, are volatile. Products of the 1980-1986 eruptions of Mount St. Helens have been analysed for (210Pb/226Ra). Both excesses and deficits of 210Pb are encountered suggestin...
| Main Authors: | , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2006
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