Early Life and Stromatolites

I came across THIS PODCAST from GEOLOGY BITES and thought it was very interesting and very approachable. It concerns recent discoveries which prove (probably) that early stromatolites (3.48 Ga) are of organic origin. No one questions the organic origin of current and more recent stromatolites, but these ones are very old!

To get the most from the podcast scroll down THIS PAGE to see the astonishing photos.

I have a slight personal interest in this as we used the interviewee's guide book when we were in Marble Bar, Western Australia in 2013.

And here is my photo of some stromatolitic limestone from the area