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:4/23/2014)... HUNTSVILLE, TX (4/23/14) -- Researchers have found evidence ... risk factors that increase aggressive behavior in children, ... that not all children exposed to prenatal smoking ... others will not," said Brian Boutwell, Assistant Professor ... Justice and senior author on the study. ...
(Date:4/23/2014)... yesterday, Argentina joins the European Molecular Biology Laboratory ... strengthens the ties between the European and Latin ... access to EMBL,s world-class facilities and programs, and ... inception, fostering excellent life science research and promoting ... EMBL,s mission," says EMBL Director General Iain Mattaj ...
(Date:4/23/2014)... newly coined term for novels and films which focus on ... Copenhagen shows how these fictions serve as a mental laboratory ... change and imagine other living conditions. , "Global warming ... atmosphere; it is also a cultural phenomenon in which meaning ... films we see. And there are so many of them ...
Breaking Biology News(10 mins):Genetics risk, prenatal smoking may predict behavioral problems 2Fiction prepares us for a world changed by global warming 2Fiction prepares us for a world changed by global warming 3
... August 9, 2011 A newly-identified protein may hold ... check, according to a study by York University researchers. ... Biology, Faculty of Science & Engineering, is delving into ... present in the brain. His studies found that rats ...
... is available in German . During the ... humans, chromosomes are broken and rearranged at many positions. Using ... Klein, professor for genetics at the Max F. Perutz Laboratories ... high resolution. The surprising observations regarding the mechanism of meiosis ...
... LANSING, Mich. --- Lakes, streams and wetlands are not ... her colleagues are pioneering a new field of research ... surroundings. Patricia Soranno, associate professor of fisheries and ... grant to gauge land use and climate change,s impact ...
Cached Biology News:York U researchers zero in on protein that may help treat obesity, diabetes 2The machinery for recombination is part of the chromosome structure 2The machinery for recombination is part of the chromosome structure 3MSU professor launches new field of water research, nets $2.2 million NSF grant 2
(Date:1/14/2014)... EquitiesIQ, a leading informational research provider, has ... an emerging biomedical company acquiring, developing, manufacturing, and marketing ... Free report download: http://equitiesiq.com/reports/alliqua/ , In late ... and Board, which launched the company’s new strategy to ...
(Date:1/14/2014)... (PRWEB) January 14, 2014 In recent ... motives and methods in product development and promotion has ... industry. This mistrust, fueled by concerns about the insidious ... by reports of spectacular fines to the world’s biggest ...
(Date:1/14/2014)... Bellingham, Washington, USA, and Cardiff, UK (PRWEB) January 13, ... and photonics technology development leader with more than 20 ... international society for optics and photonics . Hainsey will ... “We are delighted to have Dr. Hainsey join SPIE ...
(Date:1/14/2014)... (PRWEB) January 14, 2014 BioMedomics, Inc. ... ultra-sensitive POC diagnostic platforms and novel disease specific POC tests, ... of financing netting a total of $690,000. The investment is ... in the company. This group of private investors has significant ...
Breaking Biology Technology:EquitiesIQ Initiates Coverage of Alliqua, Inc. 2EquitiesIQ Initiates Coverage of Alliqua, Inc. 3The Sunshine Act: Necessary Regulation or Unnecessary Dysregulation? New Life Science Webinar Hosted by Xtalks and IRB Services 2The Sunshine Act: Necessary Regulation or Unnecessary Dysregulation? New Life Science Webinar Hosted by Xtalks and IRB Services 3Photonics R&D Leader Bob Hainsey Joins SPIE Technical Staff 2BioMedomics, Inc. Closes $690K Round of Financing 2
... Ltd. (Amex:,SVA), a leading provider of vaccines in ... Qualifications Department at the American Stock,Exchange that the ... no later than April 30, 2008., The ... August 2007. The meeting was postponed because the ...
... SAN DIEGO, Dec. 13 /PRNewswire-FirstCall/ - MIGENIX ... of drugs for infectious,diseases, reports financial results ... and an update on its programs., ... 1% gel (Omigard(TM)/CPI-226/MX-226; topical cationic peptide;,prevention of ...
... validation studies,were published during 2007 on the Simbionix ... of studies published to 65., "This year ... from US and,European institutes" said Gary Zamler, Simbionix, ... medical institutions and teaching hospitals,have completed studies measuring ...
Cached Biology Technology:Sinovac Requests Extension for Annual Shareholders Meeting 2MIGENIX Reports Second Quarter Fiscal Year 2008 Financial Results 2MIGENIX Reports Second Quarter Fiscal Year 2008 Financial Results 3MIGENIX Reports Second Quarter Fiscal Year 2008 Financial Results 4MIGENIX Reports Second Quarter Fiscal Year 2008 Financial Results 5MIGENIX Reports Second Quarter Fiscal Year 2008 Financial Results 6MIGENIX Reports Second Quarter Fiscal Year 2008 Financial Results 7MIGENIX Reports Second Quarter Fiscal Year 2008 Financial Results 8MIGENIX Reports Second Quarter Fiscal Year 2008 Financial Results 9MIGENIX Reports Second Quarter Fiscal Year 2008 Financial Results 10MIGENIX Reports Second Quarter Fiscal Year 2008 Financial Results 11MIGENIX Reports Second Quarter Fiscal Year 2008 Financial Results 12MIGENIX Reports Second Quarter Fiscal Year 2008 Financial Results 13MIGENIX Reports Second Quarter Fiscal Year 2008 Financial Results 14MIGENIX Reports Second Quarter Fiscal Year 2008 Financial Results 15MIGENIX Reports Second Quarter Fiscal Year 2008 Financial Results 16MIGENIX Reports Second Quarter Fiscal Year 2008 Financial Results 17MIGENIX Reports Second Quarter Fiscal Year 2008 Financial Results 182007 a "Record Year" for Successful Validation Studies of Simbionix Simulators 2
... developed specifically for the stabilization of ... plates/strips. Coating Stabilizer maintains the ... or protein antigen portion of the ... filtered at 0.2 microns., ,Contents: ...
... Novagen's HT96 Isothermal Block is an ... hold HT96 plates and to provide efficient ... plate. This new design of the HT96 ... offers an enhanced product design allowing for ...
Umbilical cord blood neutrophils, For immunohistochemistry (IHC)...
...
Biology Products: