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CARBON
2
CHEMOSTRATIGRAPHY
2
Canadian arctic
2
Carbon isotopes
2
EXCURSIONS
2
Geochemistry & Geophysics
2
Osmium isotope
2
PERMIAN MASS EXTINCTION
2
POINT GSSP
2
SHANGSI
2
STRATIGRAPHY
2
STRATOTYPE SECTION
2
SVERDRUP BASIN
2
South China
2
TIMESCALE
2
Volcanism
2
Wuchiapingian-Changhsingian boundary
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