Navigation Links
Magma in Earth's mantle forms deeper than once thought
Date:1/24/2013

Magma forms far deeper than geologists previously thought, according to new research results.

A team led by geologist Rajdeep Dasgupta of Rice University put very small samples of peridotite, rock derived from Earth's mantle, under high pressures in a laboratory.

The scientists found that the rock can and does liquify, at least in small amounts, at pressures equivalent to those found as deep as 250 kilometers down in the mantle beneath the ocean floor.

Dasgupta said that this answers several questions about Earth's inner workings.

He is the lead author of a paper that appears today in the journal Nature. The research was funded by the National Science Foundation (NSF).

"The results show that in some parts of the Earth, melting, or magma formation, happens very deep beneath Earth's surface," said geologist Jennifer Wade, a program director in NSF's Division of Earth Sciences, which funded the research.

"It also means that some carbon dioxide and water could come from different sources--and deeper within the Earth--than we believed."

The mantle is the planet's middle layer, a buffer of rock between the crust--the top five miles or so--and the Earth's core.

If one could compress millions of years of observation of the mantle to mere minutes, the mantle would look like a rolling mass of rising and falling material.

This slow but constant churning convection brings materials from deep within the Earth to the surface, and higher, through volcanic eruptions.

The team focused on the mantle beneath the ocean because that's where crust is created and where, Dasgupta said, "the connection between the interior and surface world is established."

Magma rises with convective currents, then cools and spreads out to form ocean-floor crust.

The starting point for melting has long been thought to be at 70 kilometers beneath the seafloor.

That had confoun
'/>"/>

Contact: Cheryl Dybas
cdybas@nsf.gov
703-292-7734
National Science Foundation
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Mafic melts, methane seeps, 2 million waves, foreign magma, and the invisible hand
2. A new gene thought to be the cause in early-onset forms of Alzheimers disease
3. Research on carbon-consuming life-forms in Antarctica published in JoVE
4. Study by UC Santa Barbara psychologists reveals how brain performs motor chunking tasks
5. AcelRx Pharmaceuticals Receives First U.S. Patent for Small-Volume Oral Transmucosal Dosage Forms
6. Creating a future of personalized medicine: U-M forms joint venture for DNA diagnostics
7. Desert farming forms bacterial communities that promote drought resistance
8. Insect-eating bat outperforms nectar specialist as pollinator of cactus flowers
9. Wind pushes plastics deeper into oceans, driving trash estimates up
10. A deeper look into the pathogen responsible for crown gall disease in plants
11. In protein folding, internal friction may play a more significant role than previously thought
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Magma in Earth's mantle forms deeper than once thought
(Date:4/16/2014)... Armand-Frappier has just received a research grant from the ... nearly US$600,000. The 5-year grant is to pursue cutting-edge ... and to explore their biomedical potential in the field ... , "Receiving a grant at this level ... president of research and academic affairs at INRS. "It ...
(Date:4/16/2014)... array of finger-like projections called microvilli covers ... intestines., Vanderbilt University researchers have now discovered how ... critical for absorbing nutrients and defending against pathogens. ... Cell , reveal a role for adhesion ... understanding of intestinal pathologies associated with inherited and ...
(Date:4/16/2014)... memories improves during childhood, associated with structural changes ... and parietal cortices. New research from UC Davis ... this crucial time. Eventually, that could give insights ... into and during adolescence and affect memory, such ... the middle of the brain, the hippocampus plays ...
Breaking Biology News(10 mins):High-level NIH grant goes to professor Nicolas Doucet of INRS 2Vanderbilt researchers discover how intestinal cells build nutrient-absorbing surface 2Vanderbilt researchers discover how intestinal cells build nutrient-absorbing surface 3How kids' brain structures grow as memory develops 2
... To arrange for an interview with a researcher, please contact ... of each tip. For more information on ORNL and its research ... If you have a general media-related question or comment, you can ... -- Battling bugs . . . The software-writing ...
... have discovered a novel mechanism in Salmonella that ... its production of proteins in a previously unheard of manner. ... of certain proteins to respond to inhospitable conditions. ... were intrigued to find evidence of a similar mechanism in ...
... 29, 2010): Today, the Association for Molecular Pathology (AMP) submitted ... by the National Institutes of Health (NIH) for its Genetic ... membership to formulate a comprehensive response to the RFI. ... laboratory setting, AMP is able to inform the NIH on ...
Cached Biology News:Story tips from the Department of Energy's Oak Ridge National Laboratory, August 2010 2Story tips from the Department of Energy's Oak Ridge National Laboratory, August 2010 3Story tips from the Department of Energy's Oak Ridge National Laboratory, August 2010 4Mechanism uncovered behind Salmonella virulence and drug susceptibility 2Mechanism uncovered behind Salmonella virulence and drug susceptibility 3Mechanism uncovered behind Salmonella virulence and drug susceptibility 4AMP responds to Genetic Test Registry request for information 2
(Date:1/15/2014)... 2014 The Microcompetition with Foreign DNA ... disease. One of these latent viruses is the Epstein ... rheumatoid arthritis (RA). Rheumatoid arthritis (RA) is a chronic ... by the theory, a study found that RA patients ... (1). , What is Microcompetition? , Dr. Hanan ...
(Date:1/15/2014)... Sunnyvale, CA (PRWEB) January 15, 2014 ... of high throughput research solutions, today announced that ... companies, has received delivery of Freeslate’s CM ... form screening. , Lupin, headquartered in Mumbai, ... quality, affordable generic and branded formulations and Active ...
(Date:1/14/2014)... (PRWEB) January 14, 2014 Date: Friday, ... p.m. , Location: Warrington Country Club, 1360 Almshouse Road, ... Foundation, the only national nonprofit organization solely dedicated to ... quality of life for those affected worldwide, will host ... Warrington Country Club in Warrington, Pa. , Each ...
(Date:1/14/2014)... , Jan. 14, 2014  3D Communications, a leading provider ... major scientific, regulatory, business, and media events in ... , today announced its former associate Virginia Cox , ... office. Virginia Cox re-joins ... Commissioner for the Office of External Affairs at the U.S. ...
Breaking Biology Technology:Study: Rheumatoid Arthritis (RA) Patients Have EBV; The CBCD Says this is Consistent with Microcompetition 2Study: Rheumatoid Arthritis (RA) Patients Have EBV; The CBCD Says this is Consistent with Microcompetition 3Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 2Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 3Hepatitis B Foundation to Host Annual Crystal Ball Gala 2Former FDA Associate Commissioner Returns To 3D Communications 2
... quickly produce ultra-lightweight, bendable batteries and supercapacitors in ... a sheet of paper with ink made of ... conductive storage device, said Yi Cui, assistant professor ... needs a low-cost, high-performance energy storage device, such ...
... 7 Vivakor, Inc. (OTC Bulletin Board: VIVK) today announced ... Chen and Fritz Lin, M.D. , Dr. Francis Chen ... as Board member of Vivakor, having held senior management positions ... Dr. Chen earned his Ph.D. in immunology from Harvard University, ...
... , VIENNA, Austria, December 7 ... for the,chemical industry, announced today that it has appointed Mr ... forward, EUCODIS Bioscience,sole focus will be to provide high-performance enzymes ... and,on its proven technology of "in vivo recombination". , ...
Cached Biology Technology:Dip ordinary paper into ink infused with nanotubes and nanowires to create an instant battery 2Vivakor Announces Additions to Board of Directors and Scientific Advisory Board 2Vivakor Announces Additions to Board of Directors and Scientific Advisory Board 3EUCODIS Bioscience Appoints Thomas Fischer as New CEO 2
... new product number, created to easily match ... yet, please order under the old Sigma-Aldrich ... assistance. ID clarifier: tissue-culture treated ... cm 2 D H 245 ...
BD BioCoat Collagen IV 150 mm Culture Dishes...
...
...
Biology Products: