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Arctic
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Early life
Greenland
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Isua Greenstone Belt Chemical sedimentary rocks
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Isua supracrustal belt
Keywords: amphibolite facies
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Pillow lava interstices
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REE+Y chemistry
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biosphere
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carbon isotope
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carbonate rock
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dolomite
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geochemistry
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isotopic composition
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metasomatism
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microfossil
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pillow lava
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rare earth element
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stromatolite
trace element
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