Navigation Links
Ancient magma 'superpiles' may have shaped the continents
Date:12/15/2008

changed for hundreds of millions of years.

"That's a problem," Panero said. "We know that the rest of the mantle is always moving. So why are the piles still there?"

Hot rock constantly migrates from the base of the mantle up to the crust, she explained. Hot portions of the mantle rise, and cool portions fall. Continental plates emerge, then sink back into the earth.

But the presence of the superpiles and the location of subducted plates suggest that the two superpiles have likely remained fixed to the Earth's core while the rest of the mantle has churned around them for millions of years.

Unlocking this mystery is the goal of the Cooperative Institute for Deep Earth Research (CIDER) collaboration, a group of researchers from across the United States who are attempting to unite many different disciplines in the study of Earth's interior.

Panero provides CIDER her expertise in mineral physics; others specialize in geodynamics, geomagnetism, seismology, and geochemistry. Together, they have assembled a new model that suggests why the two superpiles are so stable, and what they are made of.

As it turns out, just a tiny difference in chemical composition can keep the superpiles in place, they found.

The superpiles contain slightly more iron than the rest of the mantle; their composition likely consists of 11-13 percent iron instead of 10-12 percent. But that small change is enough to make the superpiles denser than their surroundings.

"Material that is more dense is going to sink to the base of the mantle," Panero said. "It would normally spread out at that point, but in this case we have subducting plates that are coming down from above and keeping the piles contained."

CIDER will continue to explore the link between the superpiles and the plates that surround them. The researchers will also work to explain the relationship between the superpiles and other mantle plumes that rise above the
'/>"/>

Contact: Wendy Panero
Panero.1@osu.edu
614-292-6290
Ohio State University
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Scientists retrace evolution with first atomic structure of an ancient protein
2. CU-Boulder team discovers first ancient manioc fields in Americas
3. Ancient organisms discovered in Canadian gold mine
4. Amber specimen captures ancient chemical battle
5. Ancient whale fall from Californias Año Nuevo Island one of youngest, most complete known
6. Ancient whale fall from Californias Ao Nuevo Island one of youngest, most complete known
7. 454 Sequencing: Science paper describes a novel, highly efficient method of sequencing ancient DNA
8. Newfound ancient African megadroughts may have driven the evolution of humans and fishes
9. Ancient amphibians left full-body imprints
10. Scientists melt million-year-old ice in search of ancient microbes
11. Ancient fish bones reveal impacts of global warming beneath the sea
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Ancient magma 'superpiles' may have shaped the continents
(Date:8/21/2014)... designed by an international standards process, will be available ... an invited review published in the OnlineFirst version of ... the official journal of the American Society for Parenteral ... reduce the occurrence of misconnection that can be harmful ... are used to join medical devices, components, and accessories ...
(Date:8/20/2014)... John and Rebecca Moores Professor of Biology and Biochemistry at ... the International Society for the Study of the Origin of ... two from the U.S., one from France and one ... elected every three years, and 36 have been named since ... countries, the ISSOL includes researchers from disciplines as varied as ...
(Date:8/20/2014)... Tbingen, Arizona State University, the Wellcome Trust Sanger Institute ... TPH) isolated Mycobacterium pinnipedii from skeletons found ... The pathogen is a relative of the TB bacterium ... humans today. These researchers assume that seals carried the ... to sea lions was unexpected" comments Sebastien Gagneux, from ...
Breaking Biology News(10 mins):New feeding tube connectors will improve patient safety 2UH professor named fellow by International Astrobiology Society 2
... today at the American College of Neuropsychopharmacology's Annual Meeting ... age 90 with preserved cognition. The study, which ... conducted at the University of Pittsburgh, is among the ... , "While successful aging has been defined in ...
... the world would help stave off an imminent global ... the Proceedings of the National Academy of Sciences ( ... 52 member organizations of the Alliance for Zero Extinction ... threatened with imminent extinction, each of which is in ...
... at the University of Colorado at Boulder that can ... patient samples within hours may help world health officials ... on the new technology by the Centers for Disease ... Chip can determine the genetic make-up of types and ...
Cached Biology News:New research examines genetics of successful aging 2Pretreating rogue cancer cells with aspirin cripples their resistance to targeted therapy 2New U. of Colorado at Boulder flu chip may help combat future epidemics, pandemics 2New U. of Colorado at Boulder flu chip may help combat future epidemics, pandemics 3New U. of Colorado at Boulder flu chip may help combat future epidemics, pandemics 4
(Date:8/21/2014)... YORK , Aug. 21, 2014 Mathematic studies ... Harvard University , and funded by the Jeffrey ... cells within tumors can be visually identified for elimination. These ... growth. The study, which shows a topological map of what ... time in cancer research, for while tumor cells can be ...
(Date:8/21/2014)... Ontotext S4 , The Self Service ... Now the same enterprise hardened text mining, Linked ... data is available to start-ups and mid-size businesses at ... that do not have resources to evaluate and prototype ... since there is no need for on premise hardware ...
(Date:8/20/2014)... patented university inventions licensed to biotechnology firms has ... To open these roadblocks, the researchers suggest that ... discovery stage could lead to faster commercialization down ... from discoveries made in university laboratories and licensed ... clinical trials, which have a high failure rate. ...
(Date:8/20/2014)... 20, 2014  Decision Resources Group finds that the vascular access ... , India and China ... roughly equal to the size of the United States ... will experience much faster growth as a result of strong economic ... Other key findings from Decision Resources Group,s coverage of the BRIC ...
Breaking Biology Technology:Science Power Jeffrey Epstein and Harvard University Fund Project to Visually Stop Tumor Growth 2Ontotext Releases Text Mining & Semantic Technology Running in the Cloud – Welcome to “S4? 2Ontotext Releases Text Mining & Semantic Technology Running in the Cloud – Welcome to “S4? 3Ontotext Releases Text Mining & Semantic Technology Running in the Cloud – Welcome to “S4? 4Early bottlenecks in developing biopharmaceutical products delay commercialization 2Early bottlenecks in developing biopharmaceutical products delay commercialization 3BRIC Vascular Access Device Market Valued at $1.6 Billion in 2013, Similar to the U.S. Market 2BRIC Vascular Access Device Market Valued at $1.6 Billion in 2013, Similar to the U.S. Market 3
... Clinical Trial Programs Funded Through 2009, SAN ... and Ottawa, Ontario), a clinical stage biopharmaceutical company,developing ... today announced the closing of a financing transaction ... target of $8 million USD.,The offering was completed ...
... 9 InNexus,Biotechnology Inc., (TSX: IXS.V, OTC Bulletin ... commercializing the next,generation of monoclonal antibodies based on ... to its Board of Directors., Mr. Warden ... Coleman, L.L.P.,In his 23 years of practice, he ...
... Rib-X Pharmaceuticals, Inc.,("Rib-X" or the "Company"), ... development of novel antibiotics for the treatment ... its,Clinical Advisory Board. The Board, comprised of ... counsel on matters related to the,Company,s clinical ...
Cached Biology Technology:Jennerex Completes $8.3 Million Series B Financing and Appoints Dr. Cal Stiller as Director 2Jennerex Completes $8.3 Million Series B Financing and Appoints Dr. Cal Stiller as Director 3InNexus Biotechnology Strengthens Patent Team With New Leadership 2Rib-X Pharmaceuticals, Inc. Announces Formation of Clinical Advisory Board 2Rib-X Pharmaceuticals, Inc. Announces Formation of Clinical Advisory Board 3
The 12-Tube Magnetic Separation Rack is designed to be used for small-scale separations using magnetic particles. ,Capacity: 12 microcentrifuge tubes. ,Magnets: Neodymium rare earth permanent ma...
...
No description available in Ensembl Antigen: Recombinant Protein Epitope Signature Tag (PrEST)....
15(S)-HETE-d8 is used as an internal standard for the quantification of 15(S)-HETE by stable isotope dilution mass spectrometry....
Biology Products: