Featured Research

from universities, journals, and other organizations

Biogenic Origin For Earth's Oldest Putative Microfossils

Date:
July 2, 2009
Source:
Geological Society of America
Summary:
Microbes and bacteria were the first living organisms on Earth, and they can be preserved in Archean silica-rich rocks. One such outcrop from western Australia, dated to 3.5 billion years ago, may hold the oldest "microfossils."

Microbes and bacteria were the first living organisms on Earth, and they can be preserved in Archean silica-rich rocks. One such outcrop from western Australia, dated to 3.5 billion years ago, may hold the oldest "microfossils."

However, their authenticity has been called into question, and it is possible the microbe-like features may have been formed by non-biological processes inside an ancient hydrothermal vent.

In a new study published in Geology, De Gregorio et al. have compared carbonaceous matter in this rock with that from the 1.9-billion-year-old Gunflint Formation, which contains textbook examples of microfossil features. They found striking similarities between the carbon bonding and nitrogen, sulfur, and phosphorus composition of both ancient carbonaceous materials.

This similarity suggests that biological processes may be responsible for the formation of the 3.5-billion-year-old carbonaceous matter, and that hydrothermal microorganisms existed at that time on Earth.


Story Source:

The above story is based on materials provided by Geological Society of America. Note: Materials may be edited for content and length.


Journal Reference:

  1. Bradley T. De Gregorio, Thomas G. Sharp, George J. Flynn, Sue Wirick, and Richard L. Hervig. Biogenic origin for Earth's oldest putative microfossils. Geology, 2009; DOI: 10.1130/G25683A.1

Cite This Page:

Geological Society of America. "Biogenic Origin For Earth's Oldest Putative Microfossils." ScienceDaily. ScienceDaily, 2 July 2009. <www.sciencedaily.com/releases/2009/06/090630203955.htm>.
Geological Society of America. (2009, July 2). Biogenic Origin For Earth's Oldest Putative Microfossils. ScienceDaily. Retrieved October 21, 2014 from www.sciencedaily.com/releases/2009/06/090630203955.htm
Geological Society of America. "Biogenic Origin For Earth's Oldest Putative Microfossils." ScienceDaily. www.sciencedaily.com/releases/2009/06/090630203955.htm (accessed October 21, 2014).

Share This



More Fossils & Ruins News

Tuesday, October 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Turns Out Jack The Ripper's True Identity Is Still Unknown

Turns Out Jack The Ripper's True Identity Is Still Unknown

Newsy (Oct. 20, 2014) After testing DNA from a shawl found near one of Jack the Ripper's victims, a scientist said he'd identified the killer. New reports refute the claim. Video provided by Newsy
Powered by NewsLook.com
Fish Fossil Shows First-Ever Sex Was Done Side By Side

Fish Fossil Shows First-Ever Sex Was Done Side By Side

Newsy (Oct. 19, 2014) A 380-million-year-old fish may be the first creature to have copulative sex - and it was side by side with arms linked, like square dancers. Video provided by Newsy
Powered by NewsLook.com
As Sweden Hunts For Sub, "Cold War" Comparisons Flourish

As Sweden Hunts For Sub, "Cold War" Comparisons Flourish

Newsy (Oct. 19, 2014) With Sweden on the look-out for a suspected Russian sub, a lot of people are talking about the Cold War, but is it an apt comparison? Video provided by Newsy
Powered by NewsLook.com
So, Kangaroos Didn't Always Hop

So, Kangaroos Didn't Always Hop

Newsy (Oct. 16, 2014) Researchers believe an extinct kangaroo species weighed 500 pounds or more and couldn't hop. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins