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:11/21/2014)... According to a new market research report ... Control, Intrusion Detection, Parking Management, Under Vehicle Inspection), End ... - Global Forecasts to 2020", published by MarketsandMarkets, The ... $25 Billion in 2014 and is expected to reach ... 8.69%. Browse 116 market data Tables and ...
(Date:11/21/2014)... -- C-Labs LLC, a leading provider of remote and ... announced the appointment of John Traynor to ... advisor to the firm, Mr. Traynor will now oversee ... out of the C-Labs office in Redmond, ... , Chief Executive Officer. Photo - ...
(Date:11/18/2014)...   News Highlights: ... The Partners Data Lake, an agile data and ... will allow researcher and clinicians to explore and ... lives of patients , The Partners Data ... the Partners system, breaking down physical barriers for ...
Breaking Biology News(10 mins):Industrial Security Systems Market Worth $38 Billion by 2020 2Industrial Security Systems Market Worth $38 Billion by 2020 3C-Labs Names Former Microsoft and Bsquare Executive as Chief Operating Officer 2Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 2Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 3Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 4Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 5
... (March 9, 2009)A new study shows that for those ... you,re young or old: arteriovenous (AV) fistulas remain the ... to provide life-sustaining dialysis. Interventional radiologists found no difference ... "patency" or the openness of AV fistulas or accesses ...
... who ate fish at least once a week displayed higher cognitive ... it less frequently, according to a study of nearly 4,000 teenagers ... Eating fish once a week was enough to increase ... per cent, while eating fish more than once a week increased ...
... 9, 2009 Good eating habits can result when ... the Journal of Nutrition Education and Behavior , ... Minnesota report on one of the first studies to ... diet quality during the transition from early to middle ...
Cached Biology News:For old or young dialysis patients, AV fistulas remain pure gold 2For old or young dialysis patients, AV fistulas remain pure gold 3Teenage boys who eat fish at least once a week achieve higher intelligence scores 2Teenage boys who eat fish at least once a week achieve higher intelligence scores 3Regular family meals result in better eating habits for adolescents 2
(Date:12/13/2014)... Clarassance, a privately held clinical-stage biotechnology company based ... Therapeutics , Inc. The new name is derived from ... in the lungs similar to branches on a tree), ... therapeutics for the treatment of respiratory diseases. , ... to mark the company's escalation into the clinical phase ...
(Date:12/13/2014)... 2014 According to population studies: “North ... now and 2030." If a population explosion like that ... populous state in the country. , To that end, ... Future of North Carolina Forum on December 16th to ... the necessary infrastructure in place? Enough clean water? And ...
(Date:12/13/2014)... ROCHESTER, N.Y. , Dec. 12, 2014 ... engaged in the discovery and development of ... neurodegenerative diseases, today announced publication of a ... microglia, and inhibits remyelination in neurodegenerative disease" ... journal Neurobiology of Disease*.  The publication highlights ...
(Date:12/12/2014)... 2014 Pittcon is pleased to ... includes over 2,000 technical presentations offered in symposia, ... year’s program covers a wide range of applications ... drug discovery, environmental, food science, fuels/energy, genomics, lab ... The Technical Program begins on Sunday, March ...
Breaking Biology Technology:Maryland-based Biotech Company's Path Forward in Treating Respiratory Diseases Sparks Name Change 2North Carolina Chamber of Commerce: Asking Questions & Gathering Answers with a Futurist 2Vaccinex announces publication of preclinical studies with an anti-SEMA4D antibody in animal models of neuroinflammatory and demyelinating disease 2Pittcon Announces a Diverse 2015 Technical Program - Renowned Speakers, Special Symposia and Co-programming 2Pittcon Announces a Diverse 2015 Technical Program - Renowned Speakers, Special Symposia and Co-programming 3
... June 5 /PRNewswire-FirstCall/ - Oncolytics Biotech Inc.,("Oncolytics") (TSX:ONC, ... enrolment in a Phase II clinical trial using ... in patients with advanced head and neck cancers. ... Institute of Cancer Research,and The Royal Marsden NHS ...
... Contract Provides for the Sale of Ready to Drink,Suite of Nutritional ... ... or 142%, BASKING RIDGE, N.J., June 5 Millennium Biotechnologies,Inc., ... announced today that it has entered into an,amendment of it,s November ...
... 5 Crystal Research Associates, LLC,announced today that ... Arana Therapeutics Ltd. (AAH: ASX). The full 56-page ... Arana Therapeutics Ltd. ("Arana" or "the Company") ... treat,inflammatory diseases and cancer. Arana,s business is divided ...
Cached Biology Technology:Oncolytics Biotech Inc. Starts Patient Enrolment in U.K. Phase II Clinical Trial Investigating REOLYSIN(R) in Combination with Paclitaxel and Carboplatin 2Millennium Biotechnologies Announces an Increased Annualized Purchase Commitment Totaling $5.8M from Provider Services, Inc. 2Millennium Biotechnologies Announces an Increased Annualized Purchase Commitment Totaling $5.8M from Provider Services, Inc. 3Crystal Research Associates, LLC Issues Executive Informational Overview(R) (EIO(R)) on Arana Therapeutics Ltd. 2Crystal Research Associates, LLC Issues Executive Informational Overview(R) (EIO(R)) on Arana Therapeutics Ltd. 3
... Array CGH Genomic Labeling Systems are a ... of genomic DNA samples for array-based Comparative ... and direct labeling formats, the BioPrime Plus ... flexible solution to your genomic labeling needs. ...
We offer solid and solution phase peptide synthesis including a whole range of modifications. Please send the details of your peptide synthesis need to info@rpeptide.com...
... - Monolayer is a system designed for ... in a serum-free environment. The kit contains a ... been optimized for neural stem cell expansion (Johe, ... Development 10 :3129). Human fibroblast growth factor ...
... DNA Polymerase I from E. ... polymerase. The enzyme also contains ... The 5'?3' exonuclease activity enables ... and gaps in the DNA ...
Biology Products: