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:1/22/2015)... , Jan. 20, 2015 NXT-ID, Inc. (NASDAQ: NXTD ... market, reports on the recent success of the Wocket™ smart wallet at ... Wocket smart wallet was named as one of the "11 Hot Products ... Best Products Launched At CES So Far" by Newseveryday.com and "The top ...
(Date:1/22/2015)... Research and Markets ( http://www.researchandmarkets.com/research/wxdglm/global_wearable ) ... Wearable Technologies Market and Applications, Opportunities, Industry Analysis, ... 2014-2020" report to their offering. , ... can be worn on the user,s body and ...
(Date:12/22/2014)... , Dec. 22, 2014  NXT-ID, Inc. (NASDAQ: ... authentication company focused on the growing mobile commerce market, announces ... Apollo Robbins for the 2015 International CES debut of ... Robbins will be at the NXT-ID booth January 6th ...
Breaking Biology News(10 mins):CES Response for NXT-ID's Wocket Smart Wallet Kicks Off 2015 2CES Response for NXT-ID's Wocket Smart Wallet Kicks Off 2015 3Global Wearable Technologies Market and Applications, Opportunities, Industry Analysis, Segmentation, Size, Growth, Share, Overview, Trends and Forecast 2014-2020 2NXT-ID Hires Master Pickpocket and Security Consultant Apollo Robbins for Wocket Smart Wallet CES 2015 Debut 2NXT-ID Hires Master Pickpocket and Security Consultant Apollo Robbins for Wocket Smart Wallet CES 2015 Debut 3NXT-ID Hires Master Pickpocket and Security Consultant Apollo Robbins for Wocket Smart Wallet CES 2015 Debut 4
... diabetes expert. He heads the Institute for Diabetes and ... the scientific director of the Helmholtz Diabetes Center (HDC). ... of Metabolic Diseases at the Technische Universitt Mnchen (TUM). ... the control of fat and sugar metabolism, with the ...
... of Warwick have modelled an outbreak of the bee infection ... applied to other honeybee diseases such as European foulbrood and ... how bee infections spread, the method also allows scientists to ... efficacy. The researchers used two sets of data gathered ...
... oxygen reservoir, which might provide a minimal, but ... anoxic conditions. A research team from China Medical ... carrying green fluorescent protein as the carrier to ... methods. Then, the recombinant plasmid was transfected into ...
Cached Biology News:Model of dangerous bee disease in Jersey provides tool in fight against honeybee infections 2
(Date:1/22/2015)... January 22, 2015 Selexis SA, a ... Research Cell Banks (RCBs) used for drug discovery to ... Banks will include Next-Generation Sequencing (NGS) data ... de-risks biologic manufacturing by ensuring the integrity of the ...
(Date:1/22/2015)...   GenoSpace , a precision medicine software company that has ... use of genomic, imaging and other biomedical data in research ... Munson , CEO of Aspera, an IBM Company, to its ... http://photos.prnewswire.com/prnh/20150122/170713 "We are pleased to welcome ...
(Date:12/24/2014)... 2014  Vermillion, Inc. (Nasdaq:   VRML), a bio-analytical ... that the Company closed its previously announced private ... Jack W. Schuler , Birchview Fund LLC and ... before offering expenses.  The proceeds will be used ...
(Date:12/24/2014)... SoundConnect’s 2015 next generation ... communication technology, provide continued education and inform users ... demonstrates online communication features and benefits; empowering users ... innovative and powerful tools. , According to SoundConnect’s ...
Breaking Biology Technology:Selexis Generated Research Cell Banks Now Fully Sequenced Using Next-Generation Sequencing 2GenoSpace Expands Board with Appointment of Michelle Munson 2Vermillion Announces Closing of Equity Financing 2Vermillion Announces Closing of Equity Financing 3SoundConnect Launches Leading Edge Business Communications Webinar Series 2SoundConnect Launches Leading Edge Business Communications Webinar Series 3
... Push of a Button , , CLEVELAND, June 4 ... the patented probiotic strain Ganeden BC30 (R), today announced a ... beverage using PowerCap(R) technology, the innovative bottle cap dispensing system. ... with the press of a button, creating a new category ...
... Scientific Sessions , , SAN FRANCISCO, June 4 ... a biotechnology company focused on the development of compounds ... today that preclinical data related to diacylglycerol acyl transferase ... poster presentation at the 69th Scientific Sessions of the ...
... a.m. EDT , , WALTHAM, Mass., June 4 ... Company President and Chief Executive Officer, Walter C. Herlihy, Ph.D., will ... at 10:00 a.m. EDT, to report fourth quarter and fiscal year ... Company. , , This call is being webcast by Thomson/CCBN ...
Cached Biology Technology:Ganeden Biotech, Liquid Health Labs Unveil New Drink Technology 2Ganeden Biotech, Liquid Health Labs Unveil New Drink Technology 3VIA Pharmaceuticals' DGAT1 Inhibitors Featured in American Diabetes Association Poster Presentation 2VIA Pharmaceuticals' DGAT1 Inhibitors Featured in American Diabetes Association Poster Presentation 3VIA Pharmaceuticals' DGAT1 Inhibitors Featured in American Diabetes Association Poster Presentation 4Repligen Announces Conference Call of Fourth Quarter and Fiscal Year 2009 Results 2Repligen Announces Conference Call of Fourth Quarter and Fiscal Year 2009 Results 3