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rutile (3)
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clay minerals
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illite (150)
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palygorskite (43)
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sulfates
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uranium minerals (2)
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Primary terms
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absolute age (7)
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Africa
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Antarctica
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Asia
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bacteria
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Pseudomonas (1)
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carbon
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Tertiary
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Dongying Formation (1)
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upper Eocene
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Huber Formation (1)
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Oligocene
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Wasatch Formation (1)
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Shahejie Formation (2)
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