HOME >> BIOLOGY >> NEWS
Volcanic plumbing dictates development of deep-sea hydrothermal vents

EUGENE, Ore. -- After years of results that repeatedly dogged him, University of Oregon geologist Douglas R. Toomey decided to follow the trail of data surfacing from the Pacific Ocean. In doing so, he and his collaborators may have altered long-held assumptions involving plate tectonics on the ocean floor.

Reporting in the March 22 issue of Nature, Toomey and co-authors from four other institutions propose that, one, the flow in the Earth's mantle is rotated beneath the East Pacific Rise, causing the plate boundary to change orientation with time. Secondly, they argue that deep-sea hydrothermal vents frequently form above volcanoes where upwelling of the mantle and spreading of the plates are aligned.

Surprisingly, Toomey added, the amount of magma produced by volcanoes under both aligned and non-aligned mantle-plate regions is relatively equal, but that magma only in aligned sections regularly breaches the crust. When the volcanic plumbing between the mantle and crust is not aligned, magma cools and volatiles are lost as the magma moves laterally, he said. Most of the magma then remains under the sea floor.

For years, geologic theory has predicted that magma production alone is vital to fuel hydrothermal vents, or the hot smokers where microorganisms such as the Archaea thrive. These new findings indicate that the volcanic-plumbing system better explains why one volcano hosts hot smokers, while another does not, Toomey said.

We've had the data since 1997 and the germ of our results for the last six years, said Toomey, whose funding came through the Ridge 2000 initiative of the National Science Foundation. We've really solidified our findings in the last 18 months. The mantle is moving or flowing in one direction, and the plate boundary is trying to catch up. We've talked for years about passive flow models for ocean ridges - the mantle upwells as a passive response to plate motion. Now we see the mantle flow
'"/>

Contact: Jim Barlow
jebarlow@uoregon.edu
541-346-3481
University of Oregon
21-Mar-2007


Page: 1 2 3

Related biology news :

1. Volcanic eruptions, ancient global warming linked
2. West Antarcticas subglacial plumbing system mapped from space
3. Teamwork between 2 key proteins necessary for normal development and regulation of red blood cells
4. MicroRNA works with Ago2 protein to regulate blood cell development
5. Study provides new data about the laws governing embryo development in organisms
6. Common environmental chemicals in diet affect fetal ovarian development
7. The Cancer Genome Atlas awards funds for technology development
8. Marine worm opens new window on early cell development
9. Regulating alternative splicing during neural development
10. UCF professor finds bacterial pathogen may be key to understanding cancer development
11. Loss of cells antenna linked to cancers development

Post Your Comments:
(Date:10/30/2014)... 2014  Securus Technologies, a leading provider ... for public safety, investigation, corrections and monitoring, ... enhancements to its THREADS™ product, which utilizes ... intelligence and focused leads for investigators. ... innovation through identifying and delivering solutions serving ...
(Date:10/29/2014)... is open for the Society of ... SIR 2015 is the one place where ... related health care professionals can come together ... and technologies being presented, discussed and tested. ... minimally invasive, image-guided medicine, SIR 2015 will ...
(Date:10/29/2014)... in New York City on September 19, 2014, leading ... Society Professor of Genome Sciences and Medicine at the ... of Philosophy of Tel Aviv University, was awarded the ... In addition to her honorary degree from TAU, Prof. ... School of Medicine, and for the past 18 years ...
Breaking Biology News(10 mins):Securus Technologies Adds Advanced Features to Its Industry-Leading Investigative Analytics Product 2SIR 2015: Interventional radiology shapes tomorrow's medicine 2Geneticist and humanitarian: Prof. Mary-Claire King receives Lasker Award 2
(Date:10/31/2014)... 31, 2014 The report "Dairy ... Formulation (Plain, Flavored, Sweetened, Unsweetened), Channel (Supermarket, Health ... Trends & Forecast to 2018," defines and segments ... and forecast of revenue and volume for plant-based ... projected to reach $14 Billion by 2018 with ...
(Date:10/31/2014)... ENVIRON , an international environmental, ... Dr. Harvey Clewell III has rejoined the firm ... with senior professionals in ENVIRON’s Health Sciences practice. ... The Hamner Institutes for Health Sciences (The Hamner) ... is Director, Center for Human Health Assessment. , ...
(Date:10/31/2014)... 2014  Tavistock Development Co. (TDC), a diversified ... groundbreaking of the GuideWell Innovation Center ... The 92,000-square-foot, three-story facility is the first multi-tenant ... designed specifically for life sciences, health innovation, and ... 650-acre Lake Nona Medical City, near the Sanford-Burnham ...
(Date:10/30/2014)... The report “Fragrance Ingredients Market by Type (Essential Oils ... Soaps & Detergents) & by Geography - Global Trends ... Fragrance Ingredients Market with analyses and projection of the ... has been segmented on the basis of major regions ... Rest of the World (ROW); and their value has ...
Breaking Biology Technology:Dairy Alternative Beverage Market Projected to Reach $14 Billion by 2018 - Report by MarketsandMarkets 2Dairy Alternative Beverage Market Projected to Reach $14 Billion by 2018 - Report by MarketsandMarkets 3Dairy Alternative Beverage Market Projected to Reach $14 Billion by 2018 - Report by MarketsandMarkets 4Internationally recognized health scientist Dr. Harvey Clewell renews association with ENVIRON 2Internationally recognized health scientist Dr. Harvey Clewell renews association with ENVIRON 3GuideWell Innovation Center Groundbreaking Hosted by Tavistock Development Company at Lake Nona Medical City 2GuideWell Innovation Center Groundbreaking Hosted by Tavistock Development Company at Lake Nona Medical City 3Fragrance Ingredients Market worth $17,104.21 Million by 2019 - New Report by MarketsandMarkets 2Fragrance Ingredients Market worth $17,104.21 Million by 2019 - New Report by MarketsandMarkets 3Fragrance Ingredients Market worth $17,104.21 Million by 2019 - New Report by MarketsandMarkets 4Fragrance Ingredients Market worth $17,104.21 Million by 2019 - New Report by MarketsandMarkets 5
Cached News: