Precambrian time covers the vast bulk of the Earth's history, starting with the planet's creation about 4.5 billion years ago and ending with the emergence of complex, multicelled life-forms almost ...
The early earth / editor, D.R. Nelson. Earth's formation and first billion years / D.R. Nelson. The early Precambrian stratigraphic record of large extraterrestrial impacts / B.M. Simonson, G.R.
Scientists have demonstrated that a new geochemical archive -- 182-Tungsten in banded iron formations -- can be used to simultaneously trace both the evolution of the Earth's mantle and continents ...
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