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.
Dissolved H2 concentrations up to the mM range and H2 levels up to 9-58% by volume in the free gas phase are reported for groundwaters at sites in the Precambrian shields of Canada and Finland. Along ...
The phenomenon of the "Great Dissonance", where about a billion years are missing from the Earth's rocks, may finally be ...
At the University of California, Professor Charles Bernard Lipman, plant physiologist, took a chunk of pre-Cambrian rock. The piece came from Canada. Geologists considered it 100 to 200 million years ...
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