Originally posted by camaro68ss
Originally posted by HawkeyeNation
Man just crazy to think about. I always wonder how the hell they are able to carbon date and all that jazz. I mean were talking about 3.5 billion years ago. Anyways...it just amazes me about what our Earth was at one point and what it will be one day.
Makes you wonder if carbon dating is a good means of finding the age of a fossiledit on 3-1-2013 by camaro68ss because: (no reason given)
Originally posted by Corruption Exposed
I just found it slightly rude on your behalf to advertise the other thread, then go on to admit that you are aware that it's in a different forum, so therefore that portion of your post was rather pointless as my thread falls within terms and conditions and that is where my rent-a-mod comment came from due to the redundancy of your thinly veiled off topic deflection.
That's why Noffke and her colleagues corroborated their story by measuring the carbon that makes up the textured rocks. About 99 per cent of carbon in non-living stuff is carbon-12, a lighter version of the element than the carbon-13 that accounts for most of the remaining 1 per cent. Microbes that use photosynthesis to make their food contain even more carbon-12 and less carbon-13. That bias, a signature of "organic" carbon that comes from a living being, showed up in the Australian rock.
"It's always nice to have a number of different lines of evidence, and you definitely want to see organic carbon," says geomicrobiologist John Stolz of Duquesne University in Pittsburgh.
What wasn't preserved: any proteins or fats or body fossils that would clinch the case for life and identify what types of bacteria left behind this organic carbon. Most microbial mats today contain lots of photosynthetic cyanobacteria, which make the food that sustains the other bacteria. Named after the blue-green pigment they use for this process, called phycocyanin, cyanobacteria also make oxygen and are given the credit for creating Earth's atmosphere about 2.4 billion years ago.
Cyanobacteria living in microbial mats nearly 3.5 billion years ago could shake up the history of the air we all breathe.
Read more: www.smh.com.au...