Featured Research

from universities, journals, and other organizations

Understanding volcanism and tectonic activity in Yellowstone and the Pacific Northwest

Date:
September 13, 2010
Source:
American Geophysical Union
Summary:
During the past 65 million years, the Pacific Northwest has experienced significant tectonic and volcanic activity, including volcanism in the Yellowstone region. The origins of volcanism in the area have been debated.

During the past 65 million years, the Pacific Northwest has experienced significant tectonic and volcanic activity, including volcanism in the Yellowstone region. The origins of volcanism in the area have been debated.

To learn more about the region's tectonic activity and the underlying geologic structure, Obrebski et al. analyze high-resolution tomographic images of the Earth's interior created using data from the EarthScope USArray. They find that there is a mantle plume (a column of hot rock rising upward within the mantle) beneath the Yellowstone Snake River Plain in Idaho. In addition, they found that the Juan de Fuca slab, which is subducting under the North American plate, is fragmented beneath Oregon.

The researchers suggest that the plume's interaction with the slab contributed to the weakening and breakup of the Juan de Fuca slab. This unusual interaction between a subducting slab and a mantle plume could help explain tectonic and volcanic activity in the region.

Authors of the study include: Mathias Obrebski, Richard M. Allen: Department of Earth and Planetary Science, University of California, Berkeley, California, USA; Mei Xue: School of Ocean and Earth Science, Tongji University, Shanghai, China; Shu‐Huei Hung: Department of Geosciences, National Taiwan University, Taipei, Taiwan.


Story Source:

The above story is based on materials provided by American Geophysical Union. Note: Materials may be edited for content and length.


Journal Reference:

  1. Mathias Obrebski, Richard M. Allen, Mei Xue, Shu-Huei Hung. Slab-plume interaction beneath the Pacific Northwest. Geophysical Research Letters, 2010; 37 (14): L14305 DOI: 10.1029/2010GL043489

Cite This Page:

American Geophysical Union. "Understanding volcanism and tectonic activity in Yellowstone and the Pacific Northwest." ScienceDaily. ScienceDaily, 13 September 2010. <www.sciencedaily.com/releases/2010/08/100831095408.htm>.
American Geophysical Union. (2010, September 13). Understanding volcanism and tectonic activity in Yellowstone and the Pacific Northwest. ScienceDaily. Retrieved September 30, 2014 from www.sciencedaily.com/releases/2010/08/100831095408.htm
American Geophysical Union. "Understanding volcanism and tectonic activity in Yellowstone and the Pacific Northwest." ScienceDaily. www.sciencedaily.com/releases/2010/08/100831095408.htm (accessed September 30, 2014).

Share This



More Earth & Climate News

Tuesday, September 30, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Balloon Descends to Bottom of Croatian Cave

Raw: Balloon Descends to Bottom of Croatian Cave

AP (Sep. 29, 2014) An Austrian balloon pilot has succeeded in taking a balloon deep underground, a feat which he believes is a world first. (Sept. 29) Video provided by AP
Powered by NewsLook.com
Bodies Recovered from Japan Volcano Eruption

Bodies Recovered from Japan Volcano Eruption

AP (Sep. 29, 2014) Rescue crews finished recovering the remaining 27 bodies from atop Japan's Mount Ontake Monday. At least 31 people were killed Saturday in the mountain's first fatal volcanic event in modern history. (Sept. 29) Video provided by AP
Powered by NewsLook.com
Raw: Japan's Mount Ontake Erupts

Raw: Japan's Mount Ontake Erupts

AP (Sep. 27, 2014) A volcano erupted in central Japan on Saturday, sending a large plume of ash high into the sky and prompting a warning to climbers and others to avoid the area. (Sept. 27) Video provided by AP
Powered by NewsLook.com
California University Designs Sustainable Winery

California University Designs Sustainable Winery

Reuters - US Online Video (Sep. 27, 2014) Amid California's worst drought in decades, scientists at UC Davis design a sustainable winery that includes a water recycling system. Vanessa Johnston reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins