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:8/18/2015)... -- Research and Markets ( http://www.researchandmarkets.com/research/9dmm6l/global_biometric ) has ... Authentication & Identification Market: Focus On Modality, Motility ... report to their offering. The ... expected to grow at an estimated CAGR of ... $25 billion (approximately) by 2020 as per the ...
(Date:8/12/2015)...  New research unveiled at Black Hat 2015 ... steal users, fingerprints. Information released today by HYPR ... on mobile devices, making the security of this ... mobile devices, HYPR Corp. recently released a biometric ... with strong cryptographic security. More information on this ...
(Date:8/10/2015)... The latest 364 page report from business intelligence ... border security market . Visiongain assesses that ... Now: Border security is hard to achieve and harder ... issue you need to know about - and more importantly, ... how this will impact your company and the border security ...
Breaking Biology News(10 mins):Global Biometric Authentication & Identification Market 2015: Focus On Modality, Motility & Application - Estimation & Forecasts to 2020 for the $25 Billion Industry 2HYPR Corp. Addresses Android Vulnerability That Exposes Ecosystem-wide Biometric Security Challenges 2HYPR Corp. Addresses Android Vulnerability That Exposes Ecosystem-wide Biometric Security Challenges 3Border Security Market Report 2015-2025 - Growth in Biometrics, ICT, Manned and Unmanned Vehicles, and Perimeter Surveillance 2Border Security Market Report 2015-2025 - Growth in Biometrics, ICT, Manned and Unmanned Vehicles, and Perimeter Surveillance 3Border Security Market Report 2015-2025 - Growth in Biometrics, ICT, Manned and Unmanned Vehicles, and Perimeter Surveillance 4Border Security Market Report 2015-2025 - Growth in Biometrics, ICT, Manned and Unmanned Vehicles, and Perimeter Surveillance 5Border Security Market Report 2015-2025 - Growth in Biometrics, ICT, Manned and Unmanned Vehicles, and Perimeter Surveillance 6Border Security Market Report 2015-2025 - Growth in Biometrics, ICT, Manned and Unmanned Vehicles, and Perimeter Surveillance 7Border Security Market Report 2015-2025 - Growth in Biometrics, ICT, Manned and Unmanned Vehicles, and Perimeter Surveillance 8Border Security Market Report 2015-2025 - Growth in Biometrics, ICT, Manned and Unmanned Vehicles, and Perimeter Surveillance 9
... of Top Employers polls employees in the biotechnology, ... the web-based survey are asked to rate companies ... easy adaptation to change, and a research-driven environment. ... Francisco, California, again receives top honors in a ...
... of BioScience identifies diverse native prairie as ... to wildlife. Harvesting diverse prairie, which is dominated by ... expanding cultivation of corn for ethanol, such as loss ... also avoid the threat of invasion posed by cultivation ...
... Birmingham (UAB) Associate Professor Lee Meadows, Ph.D., is author ... teach evolution without offending students who have strong religious ... The Missing Link: An Inquiry Approach for Teaching All ... writes: "For too long evolution has been denied its ...
Cached Biology News:UAB professor's book promises solution for teaching evolution without conflict 2
(Date:9/2/2015)... , Sep. 02, 2015 ... announced the addition of Jain PharmaBiotech,s new report ... Companies" to their offering. This ... on technologies and applications. The report starts with ... estimation of markets. Technologies include array comparative genomic ...
(Date:9/2/2015)... , September 2, 2015 Biovista ... winners of the 2015 BeHEARD science challenge, a global ... rare disease researchers, access to the latest life science ... drug repositioning and pathway analytics capability to support ... Foundation in the study of Niemann-Pick Disease Type A ...
(Date:9/2/2015)... 2, 2015 Veracyte, Inc. (NASDAQ: VCYT ... president and chief executive officer, will present at the ... 2015 at 10:30 a.m. ET in New ... audio webcast and subsequent replay may be accessed by ... available shortly after conclusion of the presentation and archived ...
(Date:9/2/2015)... ... 02, 2015 , ... Whitehouse Laboratories is excited to announce ... Resources upcoming educational seminar and training session on Extractable & Leachable testing. Featuring ... provide Updates & Case Studies on the Latest Compliance Implications of USP and ...
Breaking Biology Technology:Global Biochips and Microarrays Technologies, Markets and Companies Report 2015 with Market Size in 2014 and Projected Value for the Years 2019 and 2024 2Biovista Sponsors Wylder Nation Foundation's Research on Acid Sphingomyelinase Deficiency 2Veracyte to Present at Morgan Stanley Global Healthcare Conference 2Whitehouse Laboratories to Participate in Pharm Ed Resources Extractables, Leachables, & Elemental Impurities Educational Seminar 2Whitehouse Laboratories to Participate in Pharm Ed Resources Extractables, Leachables, & Elemental Impurities Educational Seminar 3
... available statewide, is holding information sessions for parents until the ... , ,Children enrolled in the academy are lent a computer, ... at home with a parent or other responsible adult and ... students. Since it's a public school, there is no tuition. ...
... Fifty-two University of Wisconsin undergrads are going to vie ... and Friday for creative inventions that could turn into ... Creativity and Tong Prototype Prize reward students for engineering ... this year's Innovation Days, undergrads will show off their ...
... a piece of silicon just 10 nanometers-or a ... UW-Madison co-researchers were puzzled. According to established thinking, ... method required samples that conduct electricity. , ,"After ... layer is really thin-it's much thinner than what ...
Cached Biology Technology:Study explains unexpected conductivity of nanoscale silicon 2Study explains unexpected conductivity of nanoscale silicon 3
... use of small interfering RNA (siRNA) molecules ... interference (RNAi) pathway have generated tremendous interest ... siRNA for experimental use can be synthesized ... then transfected into the target cells in ...
... 12™ is an automated hybridization system for ... automates both the hybridization and post hybridization ... A single instrument can process up to ... and has multi-protocol software, enabling the user ...
... Uncover the biological data hidden in your samples ... manufacturing allows you to create your own microarray ... at your own pace and receive delivery of ... eArray is a secure, online array creation application ...
... the demands of the routine trace metal ... reliable, robust and simple to use instrumentation. ... the most challenging sample matrices found in ... to the toughest analytical challenges found in ...
Biology Products: