Navigation Links
Geology covers multiple disciplines and substantial territory in April's new postings
Date:4/18/2013

f oxygen in Earth surface environments has been inferred from the sulfur isotope difference between seawater sulfate, preserved as carbonate-associated sulfate or evaporite minerals, and pyrite. In this manuscript, Maya Gomes and Matthew Hurtgen present sulfur isotope data from a permanently euxinic, low-sulfate lake and show that the sulfur isotope difference between sulfate and pyrite -- termed sulfur isotope fractionation -- is partially controlled by the size of the sulfate reservoir. The implication of this reservoir effect is that sulfate concentration places constraints on sulfur isotope values preserved in marine sediment: at low sulfate levels sulfate is rapidly consumed by sulfate reducing microorganisms and fractionation values are low, whereas in high sulfate systems, a smaller portion of the sulfate reservoir is reduced and fractionation values are high. Sulfur isotope fractionation values are particularly sensitive to sulfate levels at low sulfate concentrations. Thus, sulfur isotope fractionation values can be used to evaluate marine sulfate levels and biogeochemical cycling during periods of low marine sulfate in the Precambrian and Phanerozoic.


Fluid mixing forms basement-hosted Pb-Zn deposits: Insight from metal and halogen geochemistry of individual fluid inclusions
Tobias Fusswinkel et al., Institute of Geochemistry and Petrology, ETH Zurich, Clausiusstrasse 25, CH-8092 Zrich, Switzerland. Published online ahead of print on 16 April; http://dx.doi.org/10.1130/G34092.1.

The formation of hydrothermal base metal ore deposits is commonly assumed to result from fluid mixing processes. These involve hot, saline fluids transporting high metal concentrations from crystalline basement rocks to shallower crustal levels. Subsequent mixing with formation waters rich in reduced sulfur originating from sedimentary rocks then facilitates efficient sulfide
'/>"/>

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

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:8/28/2014)... available in German . ... built with the help of sophisticated assembly lines. Mobile assembly ... important part of these assembly lines. In the case of ... work stages arranged in a precise spatial and chronological sequence, ... line. , The creation of such an assembly line at ...
(Date:8/28/2014)... conserve biodiversity and more action is needed to ensure ... say. , Published in PLOS ONE , researchers ... Exeter, used meta-analysis - combining results from different studies ... research into these areas, to determine whether they actually ... Biological Sciences, said protecting an area from human exploitation ...
(Date:8/27/2014)... Aug. 27, 2014  WaferGen Bio-systems, Inc. (NASDAQ: WGBS) ... underwritten public offering of units of common stock and ... gross proceeds of $20 million, prior to deducting underwriting ... Company.  The shares and warrants are immediately separable and ... sold in the offering consists of 2,000 shares of ...
Breaking Biology News(10 mins):Nanoscale assembly line 2Nanoscale assembly line 3Protected areas proven to protect biodiversity 2WaferGen Bio-Systems Announces Successful Completion of Public Offering Raising $20 Million 2WaferGen Bio-Systems Announces Successful Completion of Public Offering Raising $20 Million 3
... Illinois at Chicago College of Pharmacy are attempting ... antipsychotic medication works in adults and children and ... a popular "atypical" antipsychotic medication, is used to ... disorder. , Jeffrey Bishop, assistant professor of ...
... With wheat stem sawfly natural enemies in demand, ... increasing their availability. , This fall, the ... mass-rearing parasitic wasps that attack wheat stem sawfly ... plants. The team includes entomologists David Weaver, master's ...
... tool developed at Cambridge University represents a breakthrough in ... Huntington's disease. , Researchers have developed an effective ... the disease, using an automated touch screen. It is ... more effectively the cognitive difficulties in other neurodegenerative disorders ...
Cached Biology News:Studies look at how genes affect antipsychotic drug response 2Rearing an army to save wheat 2Rearing an army to save wheat 3New technology to speed up research into Huntington's disease 2New technology to speed up research into Huntington's disease 3
(Date:8/28/2014)... MENLO PARK, Calif. , Aug. 28, 2014 ... company focused on developing novel mid- to late-stage ... raised $7.0 million in its first round of ... AshHill Biomedical Investments and Hercules Bioventures with participation ... biotech entrepreneur and pharmaceutical executive, Dr. Larry ...
(Date:8/28/2014)... Boston, MA (PRWEB) August 28, 2014 ... of wholesale construction materials, selected SoundConnect ... of their cloud based audio and web conferencing ... configured to support PrimeSource’s employees’ needs. SoundConnect ... technologies. , PrimeSource Building Products will be ...
(Date:8/27/2014)... Rhythm, a biopharmaceutical company developing peptide therapeutics that address ... disorders, announced today that it has filed a registration ... Exchange Commission (SEC) relating to the proposed initial public ... of shares to be offered and the price range ... Citigroup and Cowen and Company will act as ...
(Date:8/27/2014)... The Global and China Trifluoroacetic Acid Industry is ... of the Trifluoroacetic Acid industry in Global and China. ... industry, including definitions, applications and industry chain structure. Global ... with a focus on history, developments, trends and competitive ... and Chinese situation is also offered. , The report ...
Breaking Biology Technology:Armetheon Completes $7.0 Million Series A Financing 2Armetheon Completes $7.0 Million Series A Financing 3PrimeSource Chooses SoundConnect as Collaboration Provider 2Rhythm Files Registration Statement for Proposed Initial Public Offering 2Trifluoroacetic Acid Industry (Asia, Europe, North America, ROW) Analysis Report Now Available at ReportsnReports.com 2
... In a paper published this week in Science , ... and Professor Konstantin Novoselov has literally opened a third dimension ... prove the missing link for graphene to become the next ... is a remarkable material with endless unique properties, from ...
... 2012 InterMune, Inc. (NASDAQ: ITMN ) today ... year 2011 financial results at the close of the U.S. ... and webcast will be hosted by InterMune at 4:30 p.m. ... others may participate in the conference call by dialing 800-891-8257 ...
... Hudson, President and Scientific Director of The Ontario Institute ... to develop a framework for the implementation of personalized ... aims to integrate genomics research into everyday clinical practice, ... care for patients. Published in the journal ...
Cached Biology Technology:Graphene electronics moves into a third dimension 2InterMune to Release Fourth Quarter and Full Year Financial Results on February 9 2New Study Building Framework to Bring Personalized Medicine to the Clinic 2New Study Building Framework to Bring Personalized Medicine to the Clinic 3
ATGL Antibody Shipping Temperature: HOT Storage Temperature: -20C...
Rabbit polyclonal to SpUlp2 ( Abpromise for all tested applications). Antigen: Synthetic peptide: SNNERQSLSSGSND, corresponding to amino acids 622-635 of Schizosaccharomyces pombe SpUlp2...
Lipid Phosphate Phosphohydrolase 2...
Request Info...
Biology Products: