Precambrian time covers the vast bulk of the Earth's history, starting with the planet's creation about 4.5 billion years ago ...
With sponsorship of the Paleontological Society, Bill Schopf and I have organized a half-day (morning) Symposium (officially, a “Topical Session”) for the 2003 Annual GSA Meeting to be held November 2 ...
IMAGE: 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 ...
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