Navigation Links
GEOLOGY starts 2013 with 25 new articles posted online ahead of print
Date:1/30/2013

as a result of the process.


High-precision temporal calibration of Late Permian vertebrate biostratigraphy: U-Pb zircon constraints from the Karoo Supergroup, South Africa
Bruce S. Rubidge et al. (Jahandar Ramezani, corresponding), Bernard Price Institute for Palaeontological Research, School of Geosciences, University of the Witwatersrand, PO Wits, Johannesburg 2050, South Africa; and Dept. of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. Posted online 4 Jan. 2013; http://dx.doi.org/10.1130/G33622.1.

The continental sedimentary rocks deposited in the Karoo Basin of South Africa preserve a remarkable fossil record of reptile and mammal ancestors that elucidate the evolutionary and biodiversity changes in the crucial geologic period between the Permian and the Jurassic (270-180 million years ago). Stratigraphic zonations based on the South African tetrapod fossils have global applicability in correlating continental deposits throughout the Pangean supercontinent. A major limiting factor, however, has been a lack of independent and reliable age constraints for the Karoo biozones. Bruce S. Rubidge and colleagues report on the discovery of volcanic ash deposits interbedded with four lower Permian biozones of the Karoo Supergroup and their geochronology based on high-precision U-Pb analyses by the CA-TIM method. The calibrated biostratigraphy improves understanding of basin development, as well as rates of vertebrate evolution at a time when the earliest reptile lineages were being established. It also allows correlation to the marine realm with enormous implications for global patterns of faunal evolution, including mass extinction events of the Permian Period and their possible driving mechanisms.


Oxygen isotope composition of meltwater from a Neoproterozoic glaciation in South Ch
'/>"/>

Contact: Kea Giles
kgiles@geosociety.org
303-357-1057
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. GEOLOGY returns to Naica Cave, Mexico, and extends its reach to Mercury
2. GEOLOGY speeding top science to online platform
3. GEOLOGY adds 30 new articles online
4. Geologys Mystery Interval, the Great Deepening, and the largest kill-off in Earth history
5. Geosphere: How geology, technology, modeling, and mapping see into Earths past and present
6. Sandy beaches, hydrocarbon reservoirs, tectonic tilting: Its all about geology
7. From 503-million-year-old fungi to recent earthquakes: New Geology posted ahead of print
8. Seismic zones, river deltas, landslides, fossil reptiles, and more new Geology science
9. Large, medically important class of proteins starts to yield its secrets
10. Work starts on fossil fuel free cargo ship set to transform shipping industry
11. Lets get moving: Unraveling how locomotion starts
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
GEOLOGY starts 2013 with 25 new articles posted online ahead of print
(Date:7/25/2014)... Before the colonial era, 100,000s of people lived on ... cultures manipulated fire to control the availability of plants ... tribes continue to use fire to maintain desired habitat ... the U.S. Forest Service,s Pacific Southwest Station, will lead ... National Wildfire Refuge during the Ecological Society of America,s ...
(Date:7/25/2014)... from 25 countries and 35 states will attend ... Genetics Society of America (GSA) next week at ... will feature close to 500 presentations (including 70 ... gene expression and regulation, functional genomics, chemical biology ... a variety of diseases. , Of special ...
(Date:7/25/2014)... (SB) is a complex congenital central nervous system ... of the neural tubes during the embryonic phase. ... and fecal incontinence and neurocognitive retardation. Such problems ... of life. Researchers at Ankara Physical Medicine and ... functional performance in children with SB, using the ...
Breaking Biology News(10 mins):Fire ecology manipulation by California native cultures 2Fire ecology manipulation by California native cultures 3Yeast meeting to showcase latest breakthroughs in genetics and molecular biology 2
... of an fMRI (functional magnetic resonance imaging) technique, ... Medicine have, for the first time, visualized the ... human brain. , Their work, performed at Penn's ... of psychological stress -- which will pave the ...
... some protection to the heart from injury even if ... attack, Jefferson Medical College researchers report. , Walter Koch, ... the Department of Medicine at Jefferson Medical College of ... that the drug Darbepoietin alpha would protect the ischemic ...
... two bacteria that cause significant damage to pig and ... are now analysing the results in an attempt to ... vaccines and diagnostic kits against the bacteria. , Mycoplasma ... pig-breeding industry US$200 million each year. Mycoplasma synoviae is ...
Cached Biology News:Research Permits First-Ever Visualization of Psychological Stress in the Human Brain 2
(Date:7/24/2014)... July 24, 2014 Research and Markets ... Genomics and Proteomics Analytical Instruments Market 2014-2018" report ... Genomics is the study of the ... of the structure and functions of proteomes or sets ... and technology. Genomics involves the mapping of genes and ...
(Date:7/24/2014)... PARK, Calif. , July 24, 2014 ... seven-year contract with the National Institute of Allergy and ... Health, to conduct preclinical development of potential therapies for ... of drugs to treat HIV and AIDS and the ... well as microbicides for preventing sexual transmission of HIV. ...
(Date:7/24/2014)... CA (PRWEB) July 24, 2014 Three ... be semi-finalists in Livestrong’s Big C Competition. Out of ... are each headed to the semi-final round. In this ... exclusive three-month accelerator program, complete with mentoring from thought-leaders ... , As part of the angelMD commitment to the ...
(Date:7/24/2014)... , July 24, 2014  Neogen Corporation (Nasdaq: ... forecasts of its potential revenue from new rodenticide research ... investors and analysts on July 22, 2014, Neogen,s CEO ... regarding this research. "It was my intent ... the potential of a new type of rodenticide, but ...
Breaking Biology Technology:Global Genomics and Proteomics Analytical Instruments Market 2014-2018: Key Vendors are Agilent, Bio-Rad , F. Hoffmann, La Roche, Illumina, PerkinElmer and Thermo Fisher Scientific 2National Institute of Allergy and Infectious Diseases Awards SRI International Contract to Study New Therapies for HIV and AIDS 2National Institute of Allergy and Infectious Diseases Awards SRI International Contract to Study New Therapies for HIV and AIDS 33 angelMD Startups Make Livestrong Big C Semi-finals 2Neogen comments on SenesTech 2
... for the Study of ... DNA-Protein Interactions, ... launch of its Imprint(TM) Chromatin,Immunoprecipitation Kit for epigenetic research,( http://www.sigma.com/chip ... Immunoprecipitation, including columns and reagents,for DNA purification as well as ...
... April 16 Medarex, Inc.,(Nasdaq: MEDX ) ... that suggest a,potential association between higher doses of ... control and prolonged,progression-free survival in patients with relapsed ... 1/2 trial were presented at the,Annual Meeting of ...
... Masimo (Nasdaq:,MASI), the inventor of Pulse CO-Oximetry ... Atom Medical Corporation, a leading global manufacturer ... Rainbow SET Pulse,CO-Oximetry into its current and ... Masimo technology more than 10 years ago, ...
Cached Biology Technology:Sigma(R) Launches Innovative ChIP Kit Technology For Epigenetic Research 2Sigma(R) Launches Innovative ChIP Kit Technology For Epigenetic Research 3Medarex Reports Phase 1/2 Clinical Data of MDX-060 in Lymphoma at American Association for Cancer Research Meeting 2Medarex Reports Phase 1/2 Clinical Data of MDX-060 in Lymphoma at American Association for Cancer Research Meeting 3Atom Medical Adopts Masimo Rainbow SET Technology 2Atom Medical Adopts Masimo Rainbow SET Technology 3Atom Medical Adopts Masimo Rainbow SET Technology 4
... Savant SpeedVac Concentrators set the standard for centrifugal ... uses a combination of centrifugal force, heat and ... run., SC110A comes equipped with:, , TEFLON-coated ... , Three ...
... The first SpeedVac to have active, real-time ... SpeedVac System is the worlds first, fully ... can be stacked together to form an ... benchspace. It is also the first SpeedVac ...
... RC Standard Bio for vacuum concentrator/centrifugal ... molecular biology and biochemistry for rapid and ... systems can be expanded with pumps, different ... of rotors (eliminating sample loss by transfer), ...
... dedicated concentrator for efficient drying of small ... integrated system combines the SpeedVac™ Concentrator and ... automatic pump and rotor control, and dual ... heater time), makes the DNA120 indispensable in ...
Biology Products: