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global-ocean redox condition(3)
global-ocean redox curve(3)
icehouse climate(3)
marine animal life(3)
marine anoxia(3)
marine carbonate(3)
multiple large positive 13c excursion(3)
multiple primary school science teacher(3)
n-alkanes(3)
pollen(3)
relative amount(3)
soil organic carbon(3)
tree rings(3)
u isotope(3)
u-isotope composition(3)
unique geologic time interval(3)
uranium isotope(3)
well-dated succession(3)
year study interval(3)
~(3)
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