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:11/21/2014)... Nov. 20, 2014   Atmel® Corporation (NASDAQ: ... (MCU) and touch technology solutions, today launched the industry,s ... with the widest V cc range from 1.7V ... and faster I 2 C bus communication speeds, and ... memory making them ideal for consumer, industrial, computer, and ...
(Date:11/18/2014)... , Nov. 17, 2014   ... and EMC collaborate to develop The Partners Data ... , The Partners Data Lake will allow researcher ... improve diagnostics, treatment and the lives of patients ... research and clinical activities across the Partners system, ...
(Date:11/18/2014)... , Nov. 18, 2014   EyeLock ... authentication solutions, and MorphoTrust USA (Safran), ... services, today announced a strategic partnership to offer ... motor vehicle administration (MVA), airport screening and financial ... identity-related solutions, MorphoTrust serves consumers through a nationwide ...
Breaking Biology News(10 mins):Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 2Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 3Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 4Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 2Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 3Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 4Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 5EyeLock, MorphoTrust Form Strategic Partnership to Pursue Commercial Enterprise Deployments 2EyeLock, MorphoTrust Form Strategic Partnership to Pursue Commercial Enterprise Deployments 3
... by Yale biologists, of the effects of 1997 El ... the Galpagos Islands, emphasizes the importance of studying populations ... and biological factors make specific populations more vulnerable than ... events provide an ideal system to study the impact ...
... describes hundreds of well-known and respected physicians, scientists, ... or advocated for homeopathic medicine. Eleven U.S. ... Charles Kettering, and C. Everett Koop are among ... benefited from homeopathy. Perhaps most surprisingly is the ...
... CHAMPAIGN, Ill. Using computer simulations, researchers at the University ... driving the molecule back and forth through a nanopore capacitor ... device that would read human genomes quickly and affordably., Being ... (which is the price most insurance companies are willing to ...
Cached Biology News:Global climate change: The impact of El Nio on Galpagos marine iguanas 2The surprising story of Charles Darwin and his homeopathic doctor 2The surprising story of Charles Darwin and his homeopathic doctor 3New technique could dramatically lower costs of DNA sequencing 2
(Date:11/26/2014)... 2014 The North America Thermal ... market for detailed analysis of the growth trends ... reach $616.3 million by 2018, growing at a ... Browse through the TOC of the North America ... idea of the in-depth analysis and industry segmentation ...
(Date:11/26/2014)... , Nov. 26, 2014 The announced ... indicate the company is looking to expand in non-healthcare ... sales.  The healthcare market research firm says that  Siemens ... Kalorama Information,s biennial survey of the IVD market , ... any change in its composition would likely affect IVD ...
(Date:11/26/2014)... The Alliance for Safe Biologic ... European physicians at the "1 ST EuropaBio ... at the Spanish Ministry of Health, Social Services ... the Spanish Bioindustry Association (ASEBIO), included regulators from ... oncology and rheumatology societies, representatives from a hospital ...
(Date:11/26/2014)... November 26, 2014 The ETC ... award-winning technology innovation centers, announced today that applications ... on December 1st. “Do you have a big ... I want to know about it. AccelerateBaltimore helps ... to product in just 13 weeks.” Interested ...
Breaking Biology Technology:The North America Thermal Protective Clothing Market is estimated to grow up to $616.3 million by 2018 - Report by MicroMarket Monitor 2The North America Thermal Protective Clothing Market is estimated to grow up to $616.3 million by 2018 - Report by MicroMarket Monitor 3Kalorama: Sale of Three Siemens Healthcare Units Raises Questions About Firm's IVD Future 2ASBM Presents European Physicians Survey at Spanish Ministry of Health 2AccelerateBaltimore Applications to Close in 6 Days 2AccelerateBaltimore Applications to Close in 6 Days 3
... Centers,of America, Inc. (Navitas), the market leader in ... to announce the,appointment of Dean H. Gesme, Jr., ... to currently providing care as a medical oncologist ... as the Past-Chair of the,National Coalition for Cancer ...
... Oct. 17 Monsanto Company (NYSE:,MON) today announced ... president and chief executive officer, and Robb Fraley, ... stock trading,plans in accordance with Rule 10b5-1 of ... plans, the Monsanto executives have directed brokers in ...
... Calif. and OSAKA, Japan, Oct. 17 Affymax,Inc. ... Limited (TSE: 4502),today announced that they have been ... Licensing Executives Society of the U.S. and Canada ... commercialize,Affymax,s lead product candidate, Hematide(TM), for the treatment ...
Cached Biology Technology:Navitas Names Dr. Dean Gesme as Medical Director 2Affymax(R) and Takeda Recognized for Innovative Global Agreement to Develop and Commercialize Hematide(TM) for Anemia 2Affymax(R) and Takeda Recognized for Innovative Global Agreement to Develop and Commercialize Hematide(TM) for Anemia 3
... Invitrogens EvoQuest Services are ... prevail in the current competitive ... proprietary techniques to express, purify, ... your needs: Structure/Function Studies, Activity ...
... Standard Tray (3 per pack), 1. ... and blot processing.Automated staining of Coomassie ... and nucleic acid analysis.Prepares blots for ... detection.Programmable control of protocol, solution, volume, ...
... High quality kits and reagents ... give consistent and reliable 2-D ... up samples from contaminants.Efficiently dialyze ... protein for first-dimension isoelectric focusing.Reagents ...
IMAGEQUANT 300 WKSTN, 1 EA. Category: ImageQuant CCD Imagers....
Biology Products: