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geochemical cycle |
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geochemical cycleDevelopmental path followed by individual elements or groups of elements in the crustal and subcrustal zones of the Earth and on its surface. The concept encompasses geochemical differentiation (natural separation and concentration of elements) and heat-assisted recombination processes. Changes may not be apparent over a short term, but over a long term changes of great magnitude occur, including the evolution of continents and oceans. |
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The introductions of the papers collectively sum up the importance of biomineralization and why geologists should care: organisms--prokaryotic starting nearly 4 billion years ago, eukaryotic barging in for the past half a billion or so--shouldered their way into virtually all geochemical cycles on Earth's surface to the point that most geochemical reactions are really biogeochemical. |
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geochemical cycle
