Subscribe free to our newsletters via your
. 24/7 Space News .




Subscribe free to our newsletters via your




















EARLY EARTH
Techniques used in forensic science help discover new molecular fossils
by Staff Writers
Sendai, Japan (SPX) Sep 04, 2017


Molecular fossils of Archaea (cyclic biphytanes and diagenetic products of them) and their distribution. The researchers found new molecular fossils of archaea in sedimentary rocks deposited in southern China about 250 million years ago, using a common analytical instrument (GC-MS). They believe this will reveal archaeal distribution from 200 million years ago.

Researchers in Japan and China believe they have found new molecular fossils of archaea using a method of analysis commonly used in forensic science.

According to a system designed by microbiologist Carl Woese, there are three domains of life on Earth - Bacteria, Archaea and Eukaryota. To date, the distribution of archaea remains unclear especially for geologic periods dating back more than 2 million years. This is because except for halophilic, methanogenic and methanotrophic archaea*, molecular fossils of archaea are rarely found, while those of bacteria and eukaryote are commonly found.

Studies of molecular clock suggest that archaea appeared around 3.8 billion years ago, while the results of more direct geological evidence from molecular fossils of archaea indicate a timeline of 0.2 billion years (with the exception of two records of 0.25 and approximately 2.7 billion years).

The reason for the difference in timeframes could be due to the low biomass of archaea in earlier geologic periods, or to the lability of the molecular fossils, leading to decomposition.

A team led by Dr. Ryosuke Saito and Professor Kunio Kaiho of Tohoku University took sedimentary rock samples from southern China, and analyzed the organic molecules in them using gas chromatography-mass spectrometry (GC-MS). They found new fossils among the molecular fossils of archaea.

This is the first study to detect diagenetic products using GC-MS, a conventional instrument found widely in organic geochemistry laboratories. GC-MS has been regarded as a "gold standard" for forensic substance identification and is used in drug detection, fire investigation, environmental analysis and explosives investigation. It's also been used to identify extra-terrestrial samples.

Saito's team is now studying the archaeal distribution on Earth more than 2 million years ago. They believe that by analyzing the fossils using the GC-MS method, it will be easier to find archaea in sedimentary rocks.

Research paper

EARLY EARTH
Volcanic eruptions drove ancient global warming event
Riverside CA (SPX) Aug 31, 2017
A natural global warming event that took place 56 million years ago was triggered almost entirely by volcanic eruptions that occurred as Greenland separated from Europe during the opening of the North Atlantic Ocean, according to an international team of researchers that includes Andy Ridgwell, a University of California, Riverside professor of earth sciences. The findings, published in Na ... read more

Related Links
Tohoku University
Explore The Early Earth at TerraDaily.com

Thanks for being here;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.

SpaceDaily Contributor
$5 Billed Once


credit card or paypal
SpaceDaily Monthly Supporter
$5 Billed Monthly


paypal only

Comment using your Disqus, Facebook, Google or Twitter login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle

EARLY EARTH
NASA Offers Space Station as Catalyst for Discovery in Washington

Voyager Spacecraft: 40 Years of Solar System Discoveries

Trump names former Navy aviator to head NASA

The wackiest innovations at Berlin's IFA 2017

EARLY EARTH
ISRO Develops Ship-Based Antenna System to Track Satellite Launches

NASA Concludes Summer of Testing with Fifth Flight Controller Hot Fire

Aerospace test at Sandia goes green with alternative to explosives

Falcon 9 launches from Vandenberg

EARLY EARTH
For Moratorium on Sending Commands to Mars, Blame the Sun

Tributes to wetter times on Mars

Opportunity will spend three weeks at current location due to Solar Conjunction

Curiosity Mars Rover Begins Study of Ridge Destination

EARLY EARTH
China, Russia to Have Smooth Space Cooperation, Says Expert

Kuaizhou-11 to send six satellites into space

Russia, China May Sign 5-Year Agreement on Joint Space Exploration

ESA and Chinese astronauts train together

EARLY EARTH
ASTROSCALE Raises a Total of $25 Million in Series C Led by Private Companies

LISA Pathfinder: bake, rattle and roll

Bids for government funding prove strong interest in LaunchUK

Blue Sky Network Reaffirms Commitment to Brazilian Market

EARLY EARTH
New microscopy method for quick and reliable 3-D imaging of curvilinear nanostructures

Chinese video site offers virtual escape from 'boring' reality

Non-thermal atmospheric pressure plasma treatment for leather products

Bit data goes anti-skyrmions

EARLY EARTH
Does the Organic Material of Comets Predate our Solar System?

Earth as Hybrid Planet: The Anthropocene Era in Astrobiological Context

A New Search for Extrasolar Planets from the Arecibo Observatory

Gulf of Mexico tube worm is one of the longest-living animals in the world

EARLY EARTH
New Horizons Video Soars over Pluto's Majestic Mountains and Icy Plains

Juno spots Jupiter's Great Red Spot

New evidence in support of the Planet Nine hypothesis

Scientists probe Neptune's depths to reveal secrets of icy planets




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News






The content herein, unless otherwise known to be public domain, are Copyright 1995-2017 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement