On Dec 12, 1:55*pm, Yousuf Khan wrote:
Are Earth's Oceans Made Of Extraterrestrial Material?

Isotopic composition of hydrogen in juvenile water speaks otherwise.
Water emanating from Halema'uma'u crater at Kilauea is low in
deuterium, a composition closer to solar hydrogen as well as
primordial hydrogen trapped in seafloor basalts:
http://www.sciencedirect.com/science...f81bda6daee8b1
or
http://adsabs.harvard.edu/abs/1976E&PSL..31..369C
In contrast, comet water has twice as much deuterium as ocean water:
http://www.highbeam.com/doc/1G1-19690571.html
and meteorites have even more deuterium:
http://adsabs.harvard.edu/abs/1981Natur.294..639M
John Curtis