![[ Back to EurekAlert! ]](http://www.eurekalert.org/images/back2e.gif){kind=small}
|
Contact: Skip Derra
skip.derra@asu.edu
480-965-4823
Arizona State University
Caption: Carbonate layers hold carbon isotope evidence of the late Precambrian greening of the Earth. These are located in the Old Dad Mountains in California.
Credit: L.P. Knauth, Arizona State University
Usage Restrictions: None
Related news release: Explosive growth of life on Earth fueled by early greening of planet
|