Navigation Links
The mystery of mass extinctions is no longer murky
Date:6/17/2008

ys National Science Foundation (NSF) Program Manager Rich Lane. "This breakthrough speaks loudly to the future impending modern shelf extinction due to climate change on Earth."

Paleontologists have been chipping away at the causes of mass extinctions for almost 60 years, according to Peters, whose work was supported by NSF. "Impacts, for the most part, aren't associated with most extinctions. There have also been studies of volcanism, and some eruptions correspond to extinction, but many do not."

Arnold I. Miller, a paleobiologist and professor of geology at the University of Cincinnati, says the new study is striking because it establishes a clear relationship between the tempo of mass extinction events and changes in sea level and sediment: "Over the years, researchers have become fairly dismissive of the idea that marine mass extinctions like the great extinction of the Late Permian might be linked to sea-level declines, even though these declines are known to have occurred many times throughout the history of life. The clear relationship this study documents will motivate many to rethink their previous views."

Peters measured two principal types of marine shelf environments preserved in the rock record, one where sediments are derived from erosion of land and the other composed primarily of calcium carbonate, which is produced in-place by shelled organisms and by chemical processes. "The physical differences between these two types of marine environments have important biological consequences," Peters explains noting differences in sediment stability, temperature and the availability of nutrients and sunlight.

In the course of hundreds of millions of years the world's oceans have expanded and contracted in response to the shifting of the Earth's tectonic plates and to changes in climate. There were periods of the planet's history when vast areas of the continents were flooded by shallow seas such as the shark and mosasaur inf
'/>"/>

Contact: Diane Banegas
dbanegas@nsf.gov
703-292-4489
National Science Foundation
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Scientists tackle mystery mountain illness
2. Folate mystery finally solved
3. Men shed light on the mystery of human longevity, study finds
4. Magnetic snakes control fluids, gravity-defying droplets, and solving a dragonfly mystery
5. Cassini on the trail of a runaway mystery
6. Time-sharing tropical birds key to evolutionary mystery
7. 480-million-year-old fossil sheds light on 150-year-old paleontological mystery
8. ASU professor helps solve mystery of glassy water
9. Ancient mystery solved
10. UCLA researchers solve decade-old mystery
11. Has the mystery of the Antarctic ice sheet been solved?
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
The mystery of mass extinctions is no longer murky
(Date:8/28/2014)... DURHAM, N.C. -- Scientists have identified the developmental on-off ... microbes that produce more than two-thirds of the world,s ... would be to see whether it is possible to ... efficient. , The study, appearing August 28 in ... a small molecule called cyclic-di-GMP and a larger protein ...
(Date:8/28/2014)... compounds that could positively impact the global ... possible, thanks to researchers in Penn State,s ... suppository made from the seaweed-derived food ingredient ... Tenofovir provides a woman-initiated, drug-delivery vehicle that ... transmitted infections during unprotected heterosexual intercourse, the ...
(Date:8/28/2014)... Energy production systems are good examples of complex ... like a networkincluding water for cooling, transport to ... management. Every step in the network chain is ... all mutually dependent. A team of UK-based scientists ... previously explored. The findings have been published in ...
Breaking Biology News(10 mins):Small molecule acts as on-off switch for nature's antibiotic factory 2Small molecule acts as on-off switch for nature's antibiotic factory 3Sensory-tested drug-delivery vehicle could limit spread of HIV, AIDS 2Sensory-tested drug-delivery vehicle could limit spread of HIV, AIDS 3Inter-dependent networks stress test 2
... An increasing number of countries and regions are transitioning ... point for the world as a whole, according to ... cover. , The novel approach looks beyond simply how ... and considers the volume of timber, biomass, and captured ...
... body's mast cells are mainly associated with allergic reaction ... substances. However, researchers at Karolinska Institutet have now demonstrated ... like psoriasis and cancer. , Mast cells are most ... act like microscopic "bombs" to trigger the release of ...
... how taking the brakes off a "detox" gene causes chemotherapy ... Products made by a gene called NRF2 normally protect cells ... absorbing the materials and pumping them out of the cell. ... cleansing process. But lung cancer cells sabotage the expression ...
Cached Biology News:End of deforestation in view? Experts advance new way to size up global forest resources 2End of deforestation in view? Experts advance new way to size up global forest resources 3End of deforestation in view? Experts advance new way to size up global forest resources 4End of deforestation in view? Experts advance new way to size up global forest resources 5End of deforestation in view? Experts advance new way to size up global forest resources 6'Allergy cells' can aggravate cancer and psoriasis 2Key to lung cancer chemo resistance revealed 2
(Date:8/29/2014)... 2014 /PRNewswire/ - iCo Therapeutics ("iCo" or "the ... results for the six months ended June 30, ... Canadian dollars and presented under International Financial Reporting ... , Announced top-line results related to ... for subjects enrolled in the Phase 2 iDEAL ...
(Date:8/29/2014)... 29, 2014 A major challenge before ... start-up dense realm of Boston-Cambridge, is gaining visibility that ... James Sherley, the Director of Boston’s Adult Stem Cell ... and national visibility of his company an important priority ... In addition to a social media marketing campaign ...
(Date:8/28/2014)... 28, 2014 Best Sanitizers, Inc., the ... alcohol-based hand sanitizer, asks food processors and food handling ... hand sanitizer they’re currently using to Best Sanitizers’ ... is critical to fighting cross-contamination and the spread of ... believes there are key criteria that make a hand ...
(Date:8/28/2014)... , Aug. 28, 2014 ... a new market research report ... Whole Exome Sequencing ... (Library Preparation, Target Enrichment), by ... by Synthesis), by Application (Cancer, ...
Breaking Biology Technology:iCo Therapeutics Announces Second Quarter 2014 Financial Results 2iCo Therapeutics Announces Second Quarter 2014 Financial Results 3iCo Therapeutics Announces Second Quarter 2014 Financial Results 4The Adult Stem Cell Technology Center, LLC Participates in Multiple Stem Cell and Regenerative Medicine Conferences Before Year End 2The Adult Stem Cell Technology Center, LLC Participates in Multiple Stem Cell and Regenerative Medicine Conferences Before Year End 3The Adult Stem Cell Technology Center, LLC Participates in Multiple Stem Cell and Regenerative Medicine Conferences Before Year End 4Food Processors and Food Handlers are Encouraged to Prepare for Fall Harvest by Evaluating Their Current Hand Sanitizer Using Nine Key Criteria 2Food Processors and Food Handlers are Encouraged to Prepare for Fall Harvest by Evaluating Their Current Hand Sanitizer Using Nine Key Criteria 3Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 2Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 3Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 4Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 5Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 6Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 7Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 8Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 9Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 10Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 11Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 12Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 13
... Data Reported by Roche at 69th Scientific Sessions , ... Inc. (Nasdaq: VIAP ), a biotechnology company ... of cardiovascular and metabolic disease, announced today that preclinical ... inhibitors will be presented in a poster presentation at ...
... , Thursday, June 11th, 10:00 a.m. EDT , , ... ) announced today that the Company President and Chief Executive Officer, ... on Thursday, June 11th, 2009 at 10:00 a.m. EDT, to report ... a quarterly update of the Company. , , This call ...
... initial steps towards producing Influenza A (H1N1) VLP vaccine for ... 4 Novavax, Inc. (Nasdaq: NVAX ) and ... National Institute of Allergy and Infectious Diseases (NIAID), National Institutes ... the evaluation of a virus-like particle (VLP) vaccine candidate against ...
Cached Biology Technology:VIA Pharmaceuticals' DGAT1 Inhibitors Featured in American Diabetes Association Poster Presentation 2VIA Pharmaceuticals' DGAT1 Inhibitors Featured in American Diabetes Association Poster Presentation 3VIA Pharmaceuticals' DGAT1 Inhibitors Featured in American Diabetes Association Poster Presentation 4Repligen Announces Conference Call of Fourth Quarter and Fiscal Year 2009 Results 2Repligen Announces Conference Call of Fourth Quarter and Fiscal Year 2009 Results 3Novavax and the NIH Agree to Evaluate a Virus-like Particle (VLP) Vaccine Candidate Against the Novel Influenza A (H1N1) Virus 2Novavax and the NIH Agree to Evaluate a Virus-like Particle (VLP) Vaccine Candidate Against the Novel Influenza A (H1N1) Virus 3Novavax and the NIH Agree to Evaluate a Virus-like Particle (VLP) Vaccine Candidate Against the Novel Influenza A (H1N1) Virus 4
Fluorescein isothiocyanate (FITC) mouse anti-human IFN-alpha2 50 ug...
Rabbit Anti-melatonin (different linkage) Polyclonal Antibody...
Rabbit Anti-melatonin (different linkage) Polyclonal Antibody...
Anti-gamma Glutamyl Transferase (gammaGT) Host: mouse monoclonal Species Reactivity: human Applications: WB, IP, FC Storage: 4C...
Biology Products: