Geochemists Challenge Key Theory Regarding Earth's Formation

Courtesy ScienceDaily  Fri, 05/02/2008 - 18:45

Geologists call into question three decades of conventional wisdom regarding some of the physical processes that helped shape the Earth as we know it today.

New research provides a direct challenge to the popular "late veneer hypothesis," a theory which suggests that all of our water, as well as several so-called "iron-loving" elements, were added to the Earth late in its formation by impacts with icy comets, meteorites and other passing objects.

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