Navigation Links
Evidence of 3.5 billion-year-old bacterial ecosystems found in Australia
Date:11/12/2013

Washington, D.C. Reconstructing the rise of life during the period of Earth's history when it first evolved is challenging. Earth's oldest sedimentary rocks are not only rare, but also almost always altered by hydrothermal and tectonic activity. A new study from a team including Carnegie's Nora Noffke, a visiting investigator, and Robert Hazen revealed the well-preserved remnants of a complex ecosystem in a nearly 3.5 billion-year-old sedimentary rock sequence in Australia. Their work is published in Astrobiology.

The Pilbara district of Western Australia constitutes one of the famous geological regions that allow insight into the early evolution of life. Mound-like deposits created by ancient photosynthetic bacteria, called stromatolites, and microfossils of bacteria have been described by scientists in detail. However, a phenomenon called microbially induced sedimentary structures, or MISS, had not previously been seen in this region. These structures are formed from mats of microbial material, much like mats seen today on stagnant waters or in coastal flats.

The team included Noffke, Hazen, Daniel Christian of Old Dominion University, and David Wacey of the University of Western Australia. They described various MISS preserved in the region's Dresser Formation. Advanced chemical analyses point toward a biological origin of the material.

The Dresser MISS fossils resemble strongly in form and preservation the MISS from several other younger rock samples, such as a 2.9 billion-year-old ecosystem Noffke and her colleagues found in South Africa.

"This work extends the geological record of MISS by almost 300 million years," said Noffke, who is also a professor at ODU. "Complex mat-forming microbial communities likely existed almost 3.5 billion years ago."

The team proposes that the sedimentary structures arose from the interactions of bacterial films with shoreline sediments from the region.

"The structures give a very clear si
'/>"/>

Contact: Robert M. Hazen
rhazen@ciw.edu
Carnegie Institution
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Research reveals first evidence of hunting by prehistoric Ohioans
2. Strong scientific evidence that eating berries benefits the brain
3. UNH research adds to mounting evidence against popular pavement sealcoat
4. NIST/UMass study finds evidence nanoparticles may increase plant DNA damage
5. Evidence shows that anti-depressants likely do more harm than good, researchers find
6. Evidence of familial vulnerability for epilepsy and psychosis
7. New evidence that many genes of small effect influence economic decisions and political attitudes
8. DNA evidence shows that marine reserves help to sustain fisheries
9. New evidence in fructose debate: Could it be healthy for us?
10. Study provides first evidence of coevolution between invasive, native species
11. First direct evidence that elemental fluorine occurs in nature
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Evidence of 3.5 billion-year-old bacterial ecosystems found in Australia
(Date:9/30/2014)... When it comes to using marijuana, new research, involving ... the Journal of Leukocyte Biology , ... mean that you should. That,s because a team of ... may do serious long-term damage to the immune system. ... inflammatory diseases, such as multiple sclerosis, inflammatory bowel disease ...
(Date:9/30/2014)... to know what goes wrong with your muscles because of ... what "normal" actually is. That,s where a new research report ... FASEB Journal comes in. In the report, a ... molecules that can help scientists "see" which genes are active ... found never-before-detected gene activity and that men have approximately 400 ...
(Date:9/30/2014)... is available in German . ... behavioural response to risky situations such as exposure to ... now found in a long-term study on different populations ... metabolic rate and ambient temperature. High metabolic rates and ... in these scenarios birds were more likely to approach ...
Breaking Biology News(10 mins):Adolescent exposure to thc may cause immune systems to go up in smoke 2Scientists identify which genes are active in muscles of men and women 2Risky metabolism 2
... BEER-SHEVA, ISRAEL, August 8, 2012 Ben-Gurion University of ... (290,000) from the Wolfson Family Charitable Trust and Wolfson ... and its environmental impact. According to BGU,s Vice ... two projects are part of the University,s overall commitment ...
... Innovative problem solving requires trying many different solutions. That,s ... that it,s true for hyenas, too. The study, published ... Royal Society B , presented steel puzzle boxes with raw ... the meat, the hyenas had to slide open a bolt ...
... For much of the year drought has been plaguing American ... appear to be losing the turf war against climate when ... State University-led study looked at the drought tolerance of 426 ... to better understand how grasslands in different parts of the ...
Cached Biology News:Diversity keeps grasslands resilient to drought, climate change 2Diversity keeps grasslands resilient to drought, climate change 3
(Date:9/30/2014)... is available in German . ... Universitt Mnchen (TUM) have demonstrated a new kind of ... that future computer chips could be based on three-dimensional ... main enabling technology of the semiconductor industry CMOS ... TUM researchers and collaborators at the University of Notre ...
(Date:9/30/2014)... YORK , Sept. 30, 2014 ... and segments with highest potential revenues Do you ... updated report gives you revenue predictions for those ... For those therapies you find financial data, R&D ... analysis you get sales forecasts to 2024 at ...
(Date:9/30/2014)... 30, 2014 Over the last decade, ... to rising R&D budgets and increased acceptance of new ... pharmaceutical and biotechnology industries are also catalyzing the growth ... market is expected to grow at a strong CAGR ... to be worth $2,532.6 million by 2019. The market ...
(Date:9/30/2014)... 30, 2014  RegeneRx Biopharmaceuticals, Inc. (OTC: RGRX) ... has received a Canadian Patent for Inhibition or ... patent includes claims using thymosin beta 4, various ... for these purposes.  The patent will expire in ... ( www.regenerx.com ) RegeneRx is ...
Breaking Biology Technology:A new dimension for integrated circuits: 3-D nanomagnetic logic 2A new dimension for integrated circuits: 3-D nanomagnetic logic 3Biosimilars and Follow-On Biologics: World Industry and Market Prospects 2014-2024 2Biosimilars and Follow-On Biologics: World Industry and Market Prospects 2014-2024 3Biosimilars and Follow-On Biologics: World Industry and Market Prospects 2014-2024 4Biosimilars and Follow-On Biologics: World Industry and Market Prospects 2014-2024 5Global Laboratory Filtration Market To See 7.0% CAGR to 2019 Says a Research Report Available at ReportsnReports.com 2Global Laboratory Filtration Market To See 7.0% CAGR to 2019 Says a Research Report Available at ReportsnReports.com 3Global Laboratory Filtration Market To See 7.0% CAGR to 2019 Says a Research Report Available at ReportsnReports.com 4Global Laboratory Filtration Market To See 7.0% CAGR to 2019 Says a Research Report Available at ReportsnReports.com 5RegeneRx Receives Canadian Patent for Inhibition or Reversal of Skin Aging 2
... Workshop Set for Sept. 3, UPPSALA, Sweden and ... Bernard de Bruyne, M.D., Ph.D., will present the,benefits of ... the outcomes of multivessel PCI in a workshop at ... The EBAC-accredited,workshop, which is sponsored by Radi Medical Systems, ...
... Cepheid (Nasdaq:,CPHD) will present at the Thomas Weisel ... Hotel, Boston, September 5 to 7, 2007. Chief,Executive ... Finance and,Chief Financial Officer, John R. Sluis will ... The webcast, along with accompanying presentation slides, may ...
... Verenium,Corporation (Nasdaq: VRNM ), a leading developer of ... high-performance specialty,enzymes, announced today that Carlos A. Riva, President ... the Cowen and Company Clean,Energy Conference. The presentation is ... 6, 2007 and will take place at Le Parker ...
Cached Biology Technology:Interventional Cardiologists Nico Pijls, Bernard De Bruyne to Discuss Benefits of Measuring Coronary Pressure in Improving Multivessel PCI at ESC Congress 2007 2Cepheid to Present at Thomas Weisel Partners Healthcare Conference 2Verenium Corporation to Present at the Upcoming Cowen and Company Clean Energy Conference 2Verenium Corporation to Present at the Upcoming Cowen and Company Clean Energy Conference 3
... Certify products ATP-Free using Mo Bio ... sensitive ATP-Free certification service that will allow you ... level of accuracy and enable you to deliver ... Mo Bios ATP detection limit is 3.5 ...
... Microarrays: Biomedical Photometrics Inc. (Waterloo, Ontario, Canada) ... have collaborated to develop a fluorescence reader ... The DNAscope AT is based on BPIs ... automatically reads up to six ArrayTubes in ...
... a comprehensive kinase analysis service utilizing ... peptide microarrays synthesized on Paraflo microfluidic ... quantitative measurement of kinase kinetic activities, ... service includes preparation of your kinase ...
... The JNK (c-Jun NH2-terminal kinase) ... three identified MAP kinase pathways in ... response to environmental stress, is associated ... itself, and is implicated in the ...
Biology Products: