| 1. | As the volcano fractured, gases and volatiles escaped from the magma chamber.
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| 2. | In the case of the magma chamber, though, the seal isn't perfect.
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| 3. | Some of the magmatic differentiation may have occurred in closed magma chambers.
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| 4. | The main magma chamber was situated under the present lake of Bracciano.
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| 5. | But it could be something else, such as an old magma chamber.
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| 6. | These two erupting fissures shared the same magma chamber, according to geophysicists.
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| 7. | Rocks of dacite composition show that within magma chambers frational crystallization occurred.
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| 8. | The conditions in the magma chamber of Ashi volcano have been estimated.
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| 9. | They may be magma chambers or the result of hydrothermal phenomena.
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| 10. | Eventually, the Incapillo magma chamber was disconnected from the mantle and lower crust.
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