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geochemical evolution |
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geochemical evolution [¦jē·ō¦kem·ə·kəl ‚ev·ə′lü·shən] (geochemistry) A change in any constituent of a rock beyond that amount present in the parent rock. A change in chemical composition of a major segment of the earth during geologic time, as the oceans. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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