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.

Related Articles


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 November 29, 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 November 29, 2014).

Share This


More From ScienceDaily



More Earth & Climate News

Saturday, November 29, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Japan's Mt. Aso Volcano Spews Rocks

Raw: Japan's Mt. Aso Volcano Spews Rocks

AP (Nov. 28, 2014) — A volcano in southern Japan is spewing volcanic magma rocks. A regional weather observatory says this could be Mt. Aso's first magma eruption in 22 years. (Nov. 28) Video provided by AP
Powered by NewsLook.com
Scientists Find Invisible Space Shield Protecting Earth

Scientists Find Invisible Space Shield Protecting Earth

Newsy (Nov. 27, 2014) — An invisible barrier is keeping dangerous super fast electrons from interfering with our atmosphere, but scientists aren't entirely sure how. Video provided by Newsy
Powered by NewsLook.com
Bolivian Recycling Initiative Turns Plastic Waste Into School Furniture

Bolivian Recycling Initiative Turns Plastic Waste Into School Furniture

Reuters - Innovations Video Online (Nov. 26, 2014) — Innovative recycling project in La Paz separates city waste and converts plastic garbage into school furniture made from 'plastiwood'. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com
Blu-Ray Discs Getting Second Run As Solar Panels

Blu-Ray Discs Getting Second Run As Solar Panels

Newsy (Nov. 26, 2014) — Researchers at Northwestern University are repurposing Blu-ray movies for better solar panel technology thanks to the discs' internal structures. Video provided by Newsy
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