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The chemistry of the composition and alterations of the solid matter of the earth or a celestial body.

ge′o·chem′i·cal (-ĭ-kəl) adj.
ge′o·chem′i·cal·ly adv.
ge′o·chem′ist n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


[ˌdʒiːəʊˈkemɪst] Ngeoquímico/a m/f
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005
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Thursday's Google doodle celebrates the 98th birth anniversary of renowned geochemist Katsuko Saruhashi, who died of pneumonia at her home in Tokyo in 2007 at the age of 87. 
Mining Geochemist Chris Eckley will explain his research on mercury methylation in the reservoir.
Too little is known about the newfound impact to guess its origin, size or effect on climate, said geochemist Morgan Schaller of Rensselaer Polytechnic Institute in Troy, N.Y.
Geochemist Professor Steven Benner argues that the "seeds" of life probably arrived on Earth in meteorites blasted off Mars by impacts or volcanic eruptions.
The Cancer Support Centre is hosting a visit by its patron Professor Jane Plant, who is a leading geochemist and an international expert on chemicals in the environment.
"We need to do more extensive sampling of aerosols over larger areas and over greater lengths of time," said WHOI geochemist Scott Doney.
"You are what you eat and drink - and that is recorded in your hair," said geochemist Professor Thure Cerling, who co-led the team.
Roberts, a geochemist at the University of Wollongong in Australia.
Alexander van Geen is a geochemist at the Lamont-Doherty Earth Observatory of Columbia University and associate director of Columbia University's Superfund Basic Research Program.
A Dutch geochemist, Roelof Schuiling, has developed a technique that could enable rock bridges, walls and dams to rise, as if by a miracle, out of the sea.