Navigation Links
Geology tracks eruptions, earthquakes, erosion, extinctions & more
Date:7/12/2013

/a>.

Elevated pCO2 leading to Late Triassic extinction, photic zone euxinia and rising sea levels are comparable to conditions that occurred during the end-Permian event reported in Science in 2005. Such conditions will have occurred during all past episodes of rapid global warming and biotic crisis that are associated with similar rises in pCO2.


Molybdenum isotopic evidence for oxic marine conditions during the latest Permian extinction
Bernadette C. Proemse et al., Department of Geoscience, University of Calgary, 2500 University Drive, Calgary, Alberta T2N 1N4, Canada. First published on 11 July 2013, http://dx.doi.org/10.1130/G34466.1.

Ocean Anoxia did not cause the Latest Permian Extinction. With loss of over 90% of marine life, the Latest Permian Extinction, ~252 million years ago represents the most severe extinction event in Earth's history. Previous studies have suggested that strong oxygen depletion in the oceans was a principal cause of the extinction, and that marine life survived only in shallowest waters where wave action maintained oxygen levels. In this new study, novel techniques using molybdenum stable isotopes were applied to examine marine oxygen levels from shallow to deep waters during the extinction. Ancient sediments were collected that represent a gradient in the marine water depth, from sites now located in the Canadian High Arctic. Results show that the deepest part of the ocean turned anoxic (oxygen depleted), explaining a near complete loss of marine life. However, shallower shelf environments well below the base of storm waves, also lacking signs of life, showed oxygen rich conditions across the mass extinction horizon. This suggests that ocean anoxia was not a global phenomenon and cannot have been the main cause of the extinction. Other killing mechanisms responsible for the extinction remain uncertain, but may be a combin
'/>"/>

Contact: Kea Giles
kgiles@geosociety.org
Geological Society of America
Source:Eurekalert

Page: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21

Related biology news :

1. Seismic zones, river deltas, landslides, fossil reptiles, and more new Geology science
2. From 503-million-year-old fungi to recent earthquakes: New Geology posted ahead of print
3. Sandy beaches, hydrocarbon reservoirs, tectonic tilting: Its all about geology
4. Geosphere: How geology, technology, modeling, and mapping see into Earths past and present
5. Geologys Mystery Interval, the Great Deepening, and the largest kill-off in Earth history
6. GEOLOGY adds 30 new articles online
7. GEOLOGY speeding top science to online platform
8. GEOLOGY returns to Naica Cave, Mexico, and extends its reach to Mercury
9. GEOLOGY starts 2013 with 25 new articles posted online ahead of print
10. New Geology study raises questions about long-held theories of human evolution
11. The Geological Society of America Journal Geology: Dynamic geoscience
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/29/2014)... of cell, including sperm, bacteria and algae, propel ... protrusions, about one-hundredth of a millimetre long, function ... Similar, shorter structures called cilia are found on ... roles such as moving liquids over the cell. ... they transport mucus and expel pathogens from our ...
(Date:7/28/2014)... the South Pole in 1911, but new research shows ... , Using data from 16 ice cores collected from ... South Pole, a group led by Joe McConnell of ... the most accurate and precise reconstruction to date of ... described in an article published today in the online ...
(Date:7/28/2014)... MA -- Fifteen years ago, MIT professor John Essigmann and ... for an HIV drug. They thought if they could induce ... weaken and eventually die out a strategy that our ... developed such a drug, which caused HIV to mutate at ... the virus from patients in a small clinical trial reported ...
Breaking Biology News(10 mins):Microscopic rowing -- without a cox 2Microscopic rowing -- without a cox 3Lead pollution beat explorers to South Pole, persists today 2Lead pollution beat explorers to South Pole, persists today 3Forced mutations doom HIV 2Forced mutations doom HIV 3Forced mutations doom HIV 4
... December 16, 2008) The overall condition of the nation,s ... released environmental assessment. The National Coastal Condition Report III ... assessments of U.S. coastal and Great Lakes waters. ... Environmental Protection Agency (EPA); the National Oceanic and Atmospheric ...
... awarded the distinction of Fellow in the American Association ... field of microbial genomics and ecology, particularly for pioneering ... Election as a Fellow is an honor bestowed ... presidential professor in OU,s Department of Botany and Microbiology ...
... team of researchers has discovered an entirely new mechanism ... finding could lead to lasers that operate more efficiently ... applications in environmental monitoring and medical diagnostics. ... of lasers," said Claire Gmachl, who led the study. ...
Cached Biology News:University of Oklahoma researcher named 2008 AAAS Fellow 2Princeton researchers discover new type of laser 2Princeton researchers discover new type of laser 3
(Date:7/29/2014)... -- According to the new research report  ... Analysis Software), Delivery Modes (Web Based/Cloud Based) & Whole ... 2018", published by MarketsandMarkets, analyzes and studies the major ... North America , Europe ... of the World (RoW). Browse 78 market ...
(Date:7/29/2014)... Pa. , July 29, 2014  Discovery ... dedicated to advancing a new standard of respiratory ... results on August 5, 2014 before the open ... The Company will host a live teleconference and ... During the conference call, Discovery Labs, management will ...
(Date:7/29/2014)... , July 29, 2014 /PRNewswire-iReach/ -- Nanosyn, Inc. ... FORMA Therapeutics, Inc., to provide access to Nanosyn,s ... lead discovery platform for novel small molecule therapeutics. ... the opportunity to work with FORMA Therapeutics to ... and protein homeostasis. FORMA Therapeutics, decision to work ...
(Date:7/29/2014)... 29, 2014 A new report ... (types, applications and geography) - Size, Share, Global Trends, ... and Forecast, 2013 - 2020", suggests that the global ... by 2020 registering a CAGR of 11.1% from 2014 ... by the electro surgical devices in operative procedures by ...
Breaking Biology Technology:Digital Pathology Market worth $437 Million by 2018 2Digital Pathology Market worth $437 Million by 2018 3Discovery Labs to Report 2014 Second Quarter Financial Results and Hold Conference Call on Tuesday, August 5, 2014 at 9:00 a.m. Eastern Time 2Nanosyn Announces Expanded Partnership With FORMA Therapeutics 2Global Surgical Equipment Market is expected to reach $12.1 billion by 2020 - Allied Market Research 2Global Surgical Equipment Market is expected to reach $12.1 billion by 2020 - Allied Market Research 3
... Mass., May 26, 2011 New England Biolabs (NEB), ... reagents for the life science industry, extends its global ... France, located at Bioparc Genopole in Evry, just south ... Ellard, President and CEO of NEB Inc., was on ...
... Addressing the issue of data overload from next-generation sequencers, ... today launched its LifeScope™ 2.0 Genomic Analysis Software , ... sequencing instruments to study human disease such as cancer. ... single next generation sequencing instrument can generate nearly 200 gigabytes ...
... 26, 2011 Reportlinker.com announces that a ... its catalogue: Future Directions ... http://www.reportlinker.com/p0511976/Future-Directions-in-Regenerative-Medicine.html?utm_source=prnewswire&utm_medium=pr&utm_campaign=Biological_Therapy Big Pharma has ... 2008, Pfizer and Novartis in 2009, and ...
Cached Biology Technology:New England Biolabs Opens New Subsidiary Office in France 2Life Technologies Simplifies, Organizes and Speeds Analysis of Genomic Data Through Launch of New LifeScope Bioinformatics Software 2Life Technologies Simplifies, Organizes and Speeds Analysis of Genomic Data Through Launch of New LifeScope Bioinformatics Software 3Life Technologies Simplifies, Organizes and Speeds Analysis of Genomic Data Through Launch of New LifeScope Bioinformatics Software 4Life Technologies Simplifies, Organizes and Speeds Analysis of Genomic Data Through Launch of New LifeScope Bioinformatics Software 5Reportlinker Adds Future Directions in Regenerative Medicine 2Reportlinker Adds Future Directions in Regenerative Medicine 3Reportlinker Adds Future Directions in Regenerative Medicine 4Reportlinker Adds Future Directions in Regenerative Medicine 5Reportlinker Adds Future Directions in Regenerative Medicine 6
... StabilCoat Plus Microsphere/Microarray Stabilizer is an ... protein and other non-toxic chemicals in a ... 7.4. This product contains a ... as a preservative. StabilCoat Plus Stabilizer ...
... mini incubation trays are disposable ... screen antigens that have been ... tray has eight 10.5 cm ... accommodate strips cut from blotted ...
... ABgene's Protein Purification Plates are designed ... SDS-PAGE gels. The 96-well plates feature two ... ends of each well. The wells remain ... with buffer, during which time the protein ...
... Kit specifically removes 20 of the most ... in preparation for further proteomics analysis. This ... proteome whether you use one- or two-dimensional ... straight to mass spectrometry. This is based ...
Biology Products: