Glimpsing the past. A rare rock formation near Nipigon is giving scientists a better understanding of what life was like on Earth over a billion years ago. We’ll hear from the Lakehead University professor who was part of this international research project. 7:09
A rare rock formation, located about 100 kilometres east of Thunder Bay, Ont., has helped an international group of researchers “sample the ancient atmosphere” to determine the abundance of living things existing on Earth a billion years ago, as compared to the present day.
Scientists examined the ratio of oxygen isotopes trapped in a mineral called gypsum, which is a key component of drywall building materials, says Philip Fralick, a Lakehead University geology professor, who was part
This story was originally published on CBC News. To read the rest of this news worthy story, please visit https://www.cbc.ca/news/canada/thunder-bay/thunder-bay-gypsum-oxygen-atmosphere-1.4753215?cmp=rss.