Triggers of Volcanic Eruptions in Oregon's Mount Hood Investigated

 

Triggers of Volcanic Eruptions in Oregon's Mount Hood Investigated
Tue, 03 Aug 2010 08:41:00 -0500

A new study has found that a mixing of two different types of magma is the key to the historic eruptions of Mount Hood, Oregon's tallest mountain, and that eruptions often happen in a relatively short time--weeks or months--after this mixing occurs.

This behavior is different from that of most other Cascade Range volcanoes, including Mount Hood's nearby, more explosive neighbor, Mt. St. Helens.

The research results are reported this week in the journal Nature ...

More at http://www.nsf.gov/news/news_summ.jsp?cntn_id=117434&WT.mc_id=USNSF_51&WT.mc_ev=click

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