Navigation Links
Researchers find smoking gun of world's biggest extinction
Date:1/23/2011

About 250 million years about 95 per cent of life was wiped out in the sea and 70 per cent on land. Researchers at the University of Calgary believe they have discovered evidence to support massive volcanic eruptions burnt significant volumes of coal, producing ash clouds that had broad impact on global oceans.

"This could literally be the smoking gun that explains the latest Permian extinction," says Dr. Steve Grasby, adjunct professor in the University of Calgary's Department of Geoscience and research scientist at Natural Resources Canada.

Grasby and colleagues discovered layers of coal ash in rocks from the extinction boundary in Canada's High Arctic that give the first direct proof to support this and have published their findings in Nature Geoscience.

Unlike end of dinosaurs, 65 million years ago, where there is widespread belief that the impact of a meteorite was at least the partial cause, it is unclear what caused the late Permian extinction. Previous researchers have suggested massive volcanic eruptions through coal beds in Siberia would generate significant greenhouse gases causing run away global warming.

"Our research is the first to show direct evidence that massive volcanic eruptions the largest the world has ever witnessed caused massive coal combustion thus supporting models for significant generation of greenhouse gases at this time," says Grasby.

At the time of the extinction, the Earth contained one big land mass, a supercontinent known as Pangaea. The environment ranged from desert to lush forest. Four-limbed vertebrates were becoming more diverse and among them were primitive amphibians, early reptiles and synapsids: the group that would, one day, include mammals.

The location of volcanoes, known as the Siberian Traps, are now found in northern Russia, centred around the Siberian city Tura and also encompass Yakutsk, Noril'sk and Irkutsk. They cover an area just unde
'/>"/>

Contact: Leanne Yohemas
leanne.yohemas@ucalgary.ca
403-540-6552
University of Calgary
Source:Eurekalert  

Page: 1 2

Related biology news :

1. 2 bacterial enzymes confer resistanceto common herbicide, say MU researchers
2. Go figure: Math model may help researchers with stem cell, cancer therapies
3. Researchers discover giant crayfish species right under their noses
4. Researchers unlock how progesterone increases breast cancer risk
5. In scientific first, researchers visualize naturally occurring mRNA
6. Researchers report on the early development of anti-HIV neutralizing antibodies
7. Researchers learn why PSA levels reflect prostate cancer progression
8. Adrenaline receptor frozen in action by VIB researchers
9. Researchers show how 1 gene becomes 2 (with different functions)
10. Technique allows researchers to identify key maize genes for increased yield
11. University of Houston researchers helping Pentagon build mind-controlled prosthetics
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Researchers find smoking gun of world's biggest extinction
(Date:5/14/2015)... , May 14, 2015  Verificient ... identity verification and online remote proctoring, announced ... software-as-a-service (SaaS) company and creator of the ... of the two companies will benefit from ... Canvas. As a fully integrated ...
(Date:5/8/2015)... 2015 Synaptics Inc. (NASDAQ: SYNA ), the ... of the executive management team will present at the following ... and Telecom Conference Date: May 18, 2015 Time: ... MA Cowen and Company Technology, Media ... Location: The New York Palace Hotel, New York, ...
(Date:4/27/2015)... NXT-ID, Inc. (NASDAQ: NXTD ) ("NXT-ID" ... the growing mobile commerce market, announces that its Wocket® ... first week of May, 2015 and will be fulfilling ... Gino Pereira , Chief Executive Officer ... as Wocket® enters the consumer market. We would like ...
Breaking Biology News(10 mins):Verificient and Instructure Announce Alliance Partnership to Provide Online Proctoring for K-12 and Higher Education Institutions 2Synaptics to Present at Upcoming Investor Conferences 2Wocket, the Smartest Wallet You Will Ever Own, Announces Shipment to Pre-order Customers 2Wocket, the Smartest Wallet You Will Ever Own, Announces Shipment to Pre-order Customers 3
... LA A team of researchers led by Charles ... Health Sciences Center New Orleans, has successfully translated a ... to fruit flies. This powerful genetic tool ... scientists to selectively, rapidly, reversibly, and dose-dependently remotely control ...
... -- A study published in the September 2013 issue ... Child and Adolescent Psychiatry found that young adults ... transitioning into employment than their peers with different disabilities. ... 2 (NLTS2; a longitudinal nationally-representative survey of youth ages ...
... seven technical reports that together form the most ... natural gas and oil extraction process commonly known ... pages, examine seven critical topics related to the ... emphasis on high-volume methods: technology, geology and hydrogeology, ...
Cached Biology News:LSUHSC researchers develop new system to better study behavior, cell function 2Young adults with autism found to have difficulty transitioning into employment 2U-M technical reports examine hydraulic fracturing in Michigan 2U-M technical reports examine hydraulic fracturing in Michigan 3U-M technical reports examine hydraulic fracturing in Michigan 4U-M technical reports examine hydraulic fracturing in Michigan 5U-M technical reports examine hydraulic fracturing in Michigan 6U-M technical reports examine hydraulic fracturing in Michigan 7
(Date:6/3/2015)... , June 3, 2015  inVentiv ... development and comprehensive commercialization services, today announced ... as President, inVentiv Health Clinical Division and ... is a seasoned veteran within the CRO ... clinical development, technology and the development of ...
(Date:6/3/2015)... Minn. , June 3, 2015 ... that supports the entire spectrum of clinical research, is ... iMedNet eClinical technology platform will ... by the end of this month.  iMedNet ... – built from the ground up by MedNet Solutions, ...
(Date:6/3/2015)... ROOSEVELT, N.J. , June 3, 2015 /PRNewswire/ ... Life Science industries, will host its 6 th ... and Exposition Center at Raritan Center in ... 2015.  Event sponsors include Novo Nordisk, Covance, Actavis ... companies that will be exhibiting are Johnson & ...
(Date:6/3/2015)... New York and London (PRWEB) June 03, 2015 ... Applications (NCSA) recently set a new world record ... 102,000 cores on the Blue Waters supercomputer. ... tool used across many industries to stimulate innovation ... NCSA’s Private Sector Program and Blue Waters manufacturer ...
Breaking Biology Technology:inVentiv Health Names Dr. Michael McKelvey President, Clinical Division And Executive Vice President, inVentiv Health 2inVentiv Health Names Dr. Michael McKelvey President, Clinical Division And Executive Vice President, inVentiv Health 3inVentiv Health Names Dr. Michael McKelvey President, Clinical Division And Executive Vice President, inVentiv Health 4inVentiv Health Names Dr. Michael McKelvey President, Clinical Division And Executive Vice President, inVentiv Health 5MedNet Announces "2015 Feature 1" Release Of iMedNet eClinical 2AstraZeneca Added as Sponsor for Industry Leading Life Science Hiring Event 2NCSA Scales CD-adapco’s STAR-CCM+ to New World Record of 102,000 Cores on Blue Waters 2NCSA Scales CD-adapco’s STAR-CCM+ to New World Record of 102,000 Cores on Blue Waters 3
... Seamless Performance Between GeneChip Scanner 3000 ... , ... GeneChip Instrument System is the most advanced microarray analysis platform ... array manufacturing processes have enabled Affymetrix to produce expression probe arrays with ...
... Spectrometry Application Note , Melissa ... Introduction , ... complex mixtures is one of the key objectives for the use of ... ion trap systems, such as the Finnigan LCQ Deca XP Plus and ...
... Chromatography and Mass Spectrometry Application Note , ... Quantum Discovery Enhanced Mass- Resolution , Xiaoying ... Walter Korfmacher 1 , ... NJ, USA; 2 Thermo Electron Corporation, Somerset, NJ, USA , ...
Cached Biology Technology:The New Affymetrix GeneChip Scanner 3000 2The New Affymetrix GeneChip Scanner 3000 3The New Affymetrix GeneChip Scanner 3000 4The New Affymetrix GeneChip Scanner 3000 5The New Affymetrix GeneChip Scanner 3000 6The New Affymetrix GeneChip Scanner 3000 7The New Affymetrix GeneChip Scanner 3000 8The New Affymetrix GeneChip Scanner 3000 9The New Affymetrix GeneChip Scanner 3000 10The New Affymetrix GeneChip Scanner 3000 11The New Affymetrix GeneChip Scanner 3000 12The New Affymetrix GeneChip Scanner 3000 13The New Affymetrix GeneChip Scanner 3000 14The New Affymetrix GeneChip Scanner 3000 15Complex Peptide Mixture Analysis on the Finnigan LTQ Linear Ion Trap Mass Spectrometer 2Complex Peptide Mixture Analysis on the Finnigan LTQ Linear Ion Trap Mass Spectrometer 3Complex Peptide Mixture Analysis on the Finnigan LTQ Linear Ion Trap Mass Spectrometer 4Increased Analyte Sensitivity through the Utility of Enhanced Mass-Resolution on the FinniganTSQ Quantum Discovery 2Increased Analyte Sensitivity through the Utility of Enhanced Mass-Resolution on the FinniganTSQ Quantum Discovery 3Increased Analyte Sensitivity through the Utility of Enhanced Mass-Resolution on the FinniganTSQ Quantum Discovery 4Increased Analyte Sensitivity through the Utility of Enhanced Mass-Resolution on the FinniganTSQ Quantum Discovery 5Increased Analyte Sensitivity through the Utility of Enhanced Mass-Resolution on the FinniganTSQ Quantum Discovery 6