6 noviembre 2014
Biogeochemical signals in 2.5-billion-year-old carbonate rocks from Brazil reveal that sulfur-consuming bacteria were active at a time when ocean sulfur levels were low. Geologists focused on sulfur isotopes in ancient carbonate rocks. The study sheds light on Earth’s early atmospheric chemistry.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/eO5U7-v0scw/141106143711.htm
