Navigation Links
Mining ancient ores for clues to early life
Date:12/10/2012

An analysis of sulfide ore deposits from one of the world's richest base-metal mines confirms that oxygen levels were extremely low on Earth 2.7 billion years ago, but also shows that microbes were actively feeding on sulfate in the ocean and influencing seawater chemistry during that geological time period.

The research, reported by a team of Canadian and U.S. scientists in Nature Geoscience, provides new insight into how ancient metal-ore deposits can be used to better understand the chemistry of the ancient oceans and the early evolution of life.

Sulfate is the second most abundant dissolved ion in the oceans today. It comes from the "rusting" of rocks by atmospheric oxygen, which creates sulfate through chemical reactions with pyrite, the iron sulfide material known as "fool's gold."

The researchers, led by PhD student John Jamieson of the University of Ottawa and Prof. Boswell Wing of McGill, measured the "weight" of sulfur in samples of massive sulfide ore from the Kidd Creek copper-zinc mine in Timmins, Ontario, using a highly sensitive instrument known as a mass spectrometer. The weight is determined by the different amounts of isotopes of sulfur in a sample, and the abundance of different isotopes indicates how much seawater sulfate was incorporated into the massive sulfide ore that formed at the bottom of ancient oceans. That ancient ore is now found on the Earth's surface, and is particularly common in the Canadian shield.

The scientists found that much less sulfate was incorporated into the 2.7 billion-year-old ore at Kidd Creek than is incorporated into similar ore forming at the bottom of oceans today. From these measurements, the researchers were able to model how much sulfate must have been present in the ancient seawater. Their conclusion: sulfate levels were about 350 times lower than in today's ocean. Though they were extremely low, sulfate levels in the ancient ocean still supported an active glo
'/>"/>

Contact: Chris Chipello
christopher.chipello@mcgill.ca
514-398-4201
McGill University
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Mining cleanup benefits from Texas A&M expertise
2. Minimizing mining damage with manure
3. Melting glaciers, enough sand to bury London, and ancient ecosystem engineering
4. Ancient civilizations reveal ways to manage fisheries for sustainability
5. Ancient whale species sheds new light on its modern relatives
6. Ancient Egyptian cotton unveils secrets of domesticated crop evolution
7. Ammonites found mini oases at ancient methane seeps
8. New coelacanth find rewrites history of the ancient fish
9. LSU research finds orangutans host ancient jumping genes
10. Whale population size, dynamics determined based on ancient DNA
11. Ancient giant turtle fossil revealed
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Mining ancient ores for clues to early life
(Date:3/17/2015)... , March 17, 2015 ... company specializing in clinical study management systems, is ... in attendance at ARENA,s Outsourcing in Clinical Trials ... This event provides an excellent forum for MedNet ... flexible and affordable software-as-a-service (SaaS) eClinical technology platform. ...
(Date:3/16/2015)... Between 16 and 20 ... innovations in biometric identification at the CeBIT exhibition ...      (Photo: http://photos.prnewswire.com/prnh/20150316/735333 ) , ... at the forefront: the company,s all new BiometricGate ... Germany . BiometricGate is the first ...
(Date:3/12/2015)... Beta Systems today announced ... management (IAM) solution for a fixed price and ... new IAM package, customers benefit from the 30 ... IAM implementations across different industries. The new fixed-price ... any necessary services and consulting. It spans the ...
Breaking Biology News(10 mins):Connect With MedNet Solutions At Outsourcing In Clinical Trials Southeast 2DERMALOG Presents its Latest Biometric Innovations at the Hannover CeBIT Exhibition, 16 - 20 March 2015 2DERMALOG Presents its Latest Biometric Innovations at the Hannover CeBIT Exhibition, 16 - 20 March 2015 3Beta Systems Fast Forward IAM Available Now: a Standardized IAM Package at a Fixed Price 2
... begin to get larger and what advantage did this increase ... of scientists examined the earliest communities of large multicellular organisms ... The life scientists used a novel application ... the scientific processes operating in the deep sea 580 million ...
... renowned for their extraordinary biotainspiring biologists and providing key ... of the devastating effects of human colonization, island ecosystems ... vital international concern. , Scientists are generating data ... now is an opportune time to bring together island ...
... microbial communities that reside in the human gut and their ... most exciting new areas of research today. To address the ... health-care professionals from all over the world will come together ... Florida, on March 8 and 9, 2014. The meeting is ...
Cached Biology News:Scientists reveal why life got big in the Earth's early oceans 2Island Biology 2014: An International Conference on Island Evolution, Ecology, and Conservation 2Attend the Gut Microbiota for Health World Summit 2014 2
(Date:3/27/2015)... WuXi PharmaTech (Cayman) Inc. (NYSE: ... technology platform company serving the global pharmaceutical, biotechnology, ... Investigational New Drug (IND) application for WuXi MedImmune,s ... been accepted for review by the China Food ... September 2012, MedImmune, the global biologics research and ...
(Date:3/26/2015)... /PRNewswire/ - SQI Diagnostics Inc. ("SQI" or the "Company") ... certain matters, including the appointment of auditors, its annual ... 2015 (the "Meeting") was adjourned, as previously disclosed on ... a.m. ( Toronto time). The date ... previous disclosed. The Meeting will reconvene at the offices ...
(Date:3/26/2015)... 2015 PAREXEL International Corporation (Nasdaq: ... research organization , announced today that the ... acquire all of the business assets of privately-owned ... of specialized pharmacovigilance services, based in Chandigarh, ... assessment, monitoring, and prevention of adverse effects ...
(Date:3/25/2015)... is one of the most attractive in the emerging ... a growing economy and increasing government investment in healthcare, ... Russian market is set to grow at twice the ... around 10-15% annually reaching an approximate market value of ... Green Cross provides total healthcare solutions that ...
Breaking Biology Technology:Investigational New Drug Application for WuXi MedImmune's Monoclonal Antibody Accepted for Review by CFDA 2Investigational New Drug Application for WuXi MedImmune's Monoclonal Antibody Accepted for Review by CFDA 3SQI Diagnostics Inc. Announces Adjournment of Meeting 2PAREXEL Announces Execution of Definitive Agreement to Acquire Quantum Solutions India, Strengthening Leadership In Pharmacovigilance Services 2PAREXEL Announces Execution of Definitive Agreement to Acquire Quantum Solutions India, Strengthening Leadership In Pharmacovigilance Services 3PAREXEL Announces Execution of Definitive Agreement to Acquire Quantum Solutions India, Strengthening Leadership In Pharmacovigilance Services 4
... By Julia Cino, PhD ... Introduction , ... to manipulate DNA to identify,excise, move and place genes into a variety ... use for many of these recombinant organisms is to produce,proteins. Since many ...
... , , ... Introduction , ... in a series documenting,simple protocols for culturing cells in a BioFlo ... of vessels, impellers,and control modules to enable growth of a wide variety,of ...
... , Microscale on-membrane PMF analysis ... the microdispensing function of a chemical printer (Refer to AXIMA Application ... with the chemical printer enables MS analysis with high mass accuracy ... E. coli separated by 2-dimensional electrophoresis were transferred to a PVDF ...
Cached Biology Technology:High Yield Protein Production from Pichia pastoris Yeast: A Protocol for Benchtop Fermentation 2High Yield Protein Production from Pichia pastoris Yeast: A Protocol for Benchtop Fermentation 3High Yield Protein Production from Pichia pastoris Yeast: A Protocol for Benchtop Fermentation 4High Yield Protein Production from Pichia pastoris Yeast: A Protocol for Benchtop Fermentation 5High Yield Protein Production from Pichia pastoris Yeast: A Protocol for Benchtop Fermentation 6High Yield Protein Production from Pichia pastoris Yeast: A Protocol for Benchtop Fermentation 7High Yield Protein Production from Pichia pastoris Yeast: A Protocol for Benchtop Fermentation 8Insect Cell Culture Using a BioFlo 110 Benchtop Bioreactor 2Insect Cell Culture Using a BioFlo 110 Benchtop Bioreactor 3Insect Cell Culture Using a BioFlo 110 Benchtop Bioreactor 4Insect Cell Culture Using a BioFlo 110 Benchtop Bioreactor 5Insect Cell Culture Using a BioFlo 110 Benchtop Bioreactor 6Direct On-Membrane MS/MS Analysis using the Chemical Printer (CHIP-1000) and AXIMA-QIT 2
Mouse monoclonal [4i144] to HLA Class II DQ1 7 ( Abpromise for all tested applications). Antigen: Full length protein (Human): HLA Class 2 Antigen DQ1,7....
... omental preadipocytes are isolated ... healthy donors. There is ... cells. Please inquire for ... also available. Academic discounts ...
Anti-ADAM-12 (Meltrin Alpha); carboxy terminal end; rabbit host...
...
Biology Products: