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:11/5/2014)... RENO – Kelly Redmond has dedicated his career ... knowledge to a general audience. , As deputy ... Climate Center at Nevada,s Desert Research Institute, Redmond ... the management, application and dissemination of climate data ... Annual Fall Meeting in San Francisco on December ...
(Date:11/4/2014)... about the way our bodies are assembled during early ... they are supposed to become a nerve or a ... correct place and alignment? Researchers at the University of ... a new study, UM researchers describe the signaling systems ... at the head-trunk region. Their discovery may have important ...
(Date:11/3/2014)... Research and Markets has announced the ... Markets and Companies" to their offering. ... which have already started to play an important role in ... the old fashioned bone marrow transplants. Role of cells in ... become a part of medical practice. Stem cells ...
Breaking Biology News(10 mins):Nevada climatologist to be honored at AGU Fall Meeting for lifetime of public outreach 2The inside story: How the brain and skull stay together 2Global Cell Therapy - Technologies, Markets and Companies: 2014 Report 2Global Cell Therapy - Technologies, Markets and Companies: 2014 Report 3
(Date:11/26/2014)... The North America Thermal Protective Clothing Market ... analysis of the growth trends and revenue forecasts. ... by 2018, growing at a CAGR of 7.1% ... TOC of the North America Thermal Protective Clothing ... in-depth analysis and industry segmentation supported by various ...
(Date:11/26/2014)... YORK , Nov. 26, 2014 The ... may indicate the company is looking to expand in ... further sales.  The healthcare market research firm says that  ... to Kalorama Information,s biennial survey of the IVD market ... and any change in its composition would likely affect ...
(Date:11/26/2014)... , Nov. 26, 2014 The ... results from a survey of European physicians at ... on Innovation and Biological Therapies" at the Spanish ... event, hosted by EuropaBio and the Spanish Bioindustry ... of Health, physicians from Spanish oncology and rheumatology ...
(Date:11/26/2014)... The ETC (Emerging Technology Centers) ... announced today that applications for AccelerateBaltimore™ (AB) 2015 ... you have a big idea?,” asked ETC’s President ... about it. AccelerateBaltimore helps you and your big ... 13 weeks.” Interested game changers with “big ...
Breaking Biology Technology:The North America Thermal Protective Clothing Market is estimated to grow up to $616.3 million by 2018 - Report by MicroMarket Monitor 2The North America Thermal Protective Clothing Market is estimated to grow up to $616.3 million by 2018 - Report by MicroMarket Monitor 3Kalorama: Sale of Three Siemens Healthcare Units Raises Questions About Firm's IVD Future 2ASBM Presents European Physicians Survey at Spanish Ministry of Health 2AccelerateBaltimore Applications to Close in 6 Days 2AccelerateBaltimore Applications to Close in 6 Days 3
Cached News: