![](https://webarchive.library.unt.edu/eot2008/20081106044253im_/http://nsf.gov/images/x.gif) News From the Field Deep Magma Matters in Volcanic Eruption Cycle
![](https://webarchive.library.unt.edu/eot2008/20081106044253im_/http://nsf.gov/images/greenlineshort.jpg)
October 9, 2008
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Although the Soufriere Hills volcano on Montserrat exhibits cycles of eruption and quiet, an international team of researchers found that magma is continuously supplied from deep in the crust, but a valve acts below a shallower magma chamber, releasing lava to the surface periodically.
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Source Penn State
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