'Anti-plume' found off Pacific Coast

CORVALLIS, Ore. The gradual subduction of the Juan de Fuca plate beneath the North American plate puts tremendous stress on the seafloor, creating cracks and fissures, hydrothermal vents, seafloor spreading, and literally hundreds of small earthquakes on a near-daily basis.

Now a North American team of scientists has documented for the first time a new phenomenon the creation of a void in the seafloor that draws in rather than expels surrounding seawater.

They report their discovery in the July 15 issue of the journal Nature.

Oregon State University oceanographer Robert Dziak said the discovery is important because it adds a new wrinkle to scientific understanding of seafloor spreading, the fundamental process of plate tectonics and the creation of ocean crust. Dziak has a dual appointment with the National Oceanic and Atmospheric Administration's Pacific Marine Environmental Laboratory.

"Just when you think you're beginning to understand how the process works, there's a new twist," Dziak said. "There was an episode of seafloor spreading on a portion of the Juan de Fuca Ridge that was covered with about a hundred meters of sediment and what usually happens in that case is that lava erupts onto the ocean floor and hot fluid is expelled into the water.

"In this case, though, it actually drew water down into the subsurface, which is something scientists have never before observed," he said.

The research team included Earl Davis, of the Geological Survey of Canada's Pacific Geoscience Centre; Keir Becker, from the Rosenstiel School of Marine and Atmospheric Science at the University of Florida; Dziak; and John Cassidy, Kelin Wang and Marvin Lilley of the University of Washington.

Dziak said the researchers think the seafloor spreading caused the ocean crust to dilate, increasing the pore space much like a sponge. "It's like an anti-plume," he said. "Instead of sending materials from within the Earth to

Contact: Robert Dziak
Oregon State University

Page: 1 2 3

Related biology news :

1. New signs of life found at the Poles
2. Key cell-death step found
3. European common frog found to use novel mating strategy
4. Byproduct of water-disinfection process found to be highly toxic
5. Genuine stem cells found in skin might treat hair loss, wounds
6. Flame retardants found on supermarket shelves
7. Anti-cancer compound in vegetables found to block late-stage breast-cancer cell growth
8. Genetic clues found for common congenital brain disorder
9. New clues to hereditary blinding disease found
10. Anti-bacterial additive found in Maryland streams
11. Genetic mutation linked to more aggressive breast cancer found more often in African-Americans

Post Your Comments:

(Date:10/29/2015)... ARBOR, Mich. , Oct. 29, 2015 /PRNewswire/ ... Eurofins Genomics for U.S. distribution of its DNA ... DNA-seq kit and Rubicon,s new ThruPLEX Plasma-seq kit. ... to enable the preparation of NGS libraries for ... plasma for diagnostic and prognostic applications in cancer ...
(Date:10/29/2015)... 2015 Today, LifeBEAM , a ... 2XU, a global leader in technical performance sports ... with advanced bio-sensing technology. The hat will allow ... key biometrics to improve overall training performance. As ... will bring together the most advanced technology, extensive ...
(Date:10/27/2015)... Oct. 27, 2015 Synaptics Inc. (NASDAQ: SYNA ... that Google has adopted the Synaptics ® ClearPad ... to power its newest flagship smartphones, the Nexus 5X ... --> --> Synaptics ... provide strategic collaboration in the joint development of next ...
Breaking Biology News(10 mins):
(Date:11/25/2015)... , November 25, 2015 ... Research Report is a professional and in-depth study ...      (Logo: http://photos.prnewswire.com/prnh/20141014/710132 ) , ... of the industry including definitions, classifications, applications and ... provided for the international markets including development trends, ...
(Date:11/24/2015)... Nov. 24, 2015 Halozyme Therapeutics, Inc. (NASDAQ: HALO ... New York on Wednesday, December 2 at ... , president and CEO, will provide a corporate overview. ... at 1:00 p.m. ET/10:00 a.m. PT . ... will provide a corporate overview. --> th Annual ...
(Date:11/24/2015)... Inc., a worldwide provider of clinical research services headquartered in ... has set a new quarterly earnings record in Q3 of 2015.  ... Q3 of 2014 to Q3 of 2015.   ... the establishment of an Asia-Pacific office to ... and Mexico , with the establishment ...
(Date:11/24/2015)... 24, 2015 --> ... report released by Transparency Market Research, the global non-invasive ... CAGR of 17.5% during the period between 2014 and ... Global Industry Analysis, Size, Volume, Share, Growth, Trends and ... testing market to reach a valuation of US$2.38 bn ...
Breaking Biology Technology:
Cached News: