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:
*Name:
*Comment:
*Email:


(Date:4/19/2016)... , UAE, April 20, 2016 ... implemented as a compact web-based "all-in-one" system solution for ... biometric fingerprint reader or the door interface with integration ... modern access control systems. The minimal dimensions of the ... readers into the building installations offer considerable freedom of ...
(Date:3/31/2016)... , March 31, 2016 ... ) ("LegacyXChange" or the "Company") LegacyXChange is ... users of its soon to be launched online site ... https://www.youtube.com/channel/UCyTLBzmZogV1y2D6bDkBX5g ) will also provide potential shareholders ... of DNA technology to an industry that is notorious ...
(Date:3/22/2016)... PROVO and SANDY, Utah ... Ontario (NSO), which operates the highest sample volume laboratory ... and Tute Genomics and UNIConnect, leaders in clinical sequencing ... announced the launch of a project to establish the ... panel. NSO has been contracted by ...
Breaking Biology News(10 mins):
(Date:5/27/2016)... ISELIN, New Jersey and ... 2016 Indegene ( ... kommerziellen und marketingorientierten Lösungen für die Life-Science-Branche, ... ), ein bekannter weltweiter Anbieter von innovativen ... im Zuge des Starts von IntraScience heute ...
(Date:5/26/2016)... Jersey and READING, England ... Indegene ( http://www.indegene.com ), a leading global ... life science, pharmaceutical and healthcare organisations and TranScrip ... innovative scientific support throughout the product lifecycle, today ... the launch of IntraScience.      (Logo: ...
(Date:5/26/2016)... ... May 26, 2016 , ... After several ... Inc. at the City of Knowledge in Panama, a 6 year-old Duchenne’s ... the US earlier this year following FDA approval of a second application for ...
(Date:5/25/2016)... ... , ... Lajollacooks4u has become a rising hotspot for specialized team building events ... attractions. Fortune 500 companies, such as Illumina, Hewlett-Packard, Qualcomm and Elsevier, have traveled ... , Each event kicks off with an olive oil and salt-tasting competition. From ...
Breaking Biology Technology:
Cached News: