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Yellowstone into the future

Date:
August 30, 2012
Source:
The Geological Society of America
Summary:
Geologist consider future scenarios of intracaldera volcanism at Yellowstone National Park, USA.

In the September issue of GSA TODAY Guillaume Girard and John Stix of McGill University in Montreal join the debate regarding future scenarios of intracaldera volcanism at Yellowstone National Park, USA.

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Using data from quartz petrography, geochemistry, and geobarometry, Girard and Stix suggest that magma ascent during the most recent eruptions of intracaldera rhyolites occurred rapidly from depths of 8-10 km to the surface along major regional faults, without intervening storage.

They consequently predict that future volcanism, which could include large-volume lava flows and phreatomagmatic rhyolitic eruptions, has a higher probability of resuming along three fault-controlled NNW-trending lineaments on the western caldera rim and across the central and northeastern caldera.

The first two were the focus of recent (70,000 to 174,000 years ago) volcanism, while the last is the most active area of current caldera unrest.


Story Source:

The above story is based on materials provided by The Geological Society of America. Note: Materials may be edited for content and length.


Journal Reference:

  1. Guillaume Girard, John Stix. Future volcanism at Yellowstone caldera: Insights from geochemistry of young volcanic units and monitoring of volcanic unrest. GSA Today, 2012; 4 DOI: 10.1130/GSATG143A.1

Cite This Page:

The Geological Society of America. "Yellowstone into the future." ScienceDaily. ScienceDaily, 30 August 2012. <www.sciencedaily.com/releases/2012/08/120830065735.htm>.
The Geological Society of America. (2012, August 30). Yellowstone into the future. ScienceDaily. Retrieved October 30, 2014 from www.sciencedaily.com/releases/2012/08/120830065735.htm
The Geological Society of America. "Yellowstone into the future." ScienceDaily. www.sciencedaily.com/releases/2012/08/120830065735.htm (accessed October 30, 2014).

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