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Geochemistry & Geophysics
2
ANCIENT SEDIMENTS
1
Ancient Sediments
1
BIOTIC CRISIS
1
Biotic Crisis
1
ECOSYSTEM COLLAPSE
1
Ecosystem Collapse
1
HYDROTHERMAL PETROLEUMS
1
Hydrothermal Petroleums
1
MASS EXTINCTION
1
Mass Extinction
1
OCEANIC ANOXIA
1
Oceanic Anoxia
1
PERMIAN-TRIASSIC BOUNDARY
1
PHOTIC ZONE EUXINIA
1
Permian-triassic Boundary
1
Photic Zone Euxinia
1
RECENT LAKE-SEDIMENTS
1
Recent Lake-sediments
1
WESTERN CANADA
1
Western Canada
1
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