Definition of "geochemical" []

• Of or pertaining to geochemistry (adjective)

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• ""Is it from life (past or present) buried below the surface of Mars, or does it come from a more prosaic source such as geochemical processing of rocks?""
• "Careful examination and geochemical analysis could probably match the tools with their quarry source, a task for the future."
• "Air capture is an industrial process for capturing CO2 from ambient air; it is one of an emerging set of technologies for CO2 removal that includes geological storage of biotic carbon and the acceleration of geochemical weathering."