The mechanism of Surtseyan volcanism
| Autor: | Kokelaar, B.P. |
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| Zdroj: | Journal of the Geological Society; December 1983, Vol. 140 Issue: 6 p939-944, 6p |
| Abstrakt: | During eruption, the vent of a Surtseyan volcano is occupied by a highly mobile slurry of tephra, hyaloclastite and water. As magma ascends rapidly through the slurry, mixing occurs due to velocity shear, acceleration of the fluid-fluid contacts and mass incorporation. Consequent expansion of the admixed water causes the jetting and continuous up-rush activity that characterizes Surtseyan volcanism. There is no evidence of the widely accepted fuel-coolant interaction mechanism. |
| Databáze: | Supplemental Index |
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