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Search 3,721 documents across 34 fields — every claim tier-rated by evidence

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4 results for "anoxic"

O_5_07 Verified Earth Anomalies

O_5_07 — Anoxic Events and Ocean Dead Zones: Deoxygenation Through Time

Oceanic Anoxic Events (OAEs) were episodes in Earth's history when large portions of the world's oceans became severely depleted of dissolved oxygen (anoxic) or enriched in toxic hydrogen sulfide (euxinic), causing wides

oceanic anoxic event OAE dead zone hypoxia anoxia deoxygenation

E_2_15 Verified Cataclysms & Chronology

E_2_15 — Azolla Event and Eocene Arctic Cooling

The Azolla Event (c. 49 Ma, Middle Eocene) refers to a period of approximately 800,000 years during which the floating freshwater fern _Azolla_ bloomed prolifically across the semi-enclosed Arctic Ocean, sequestering mas

Azolla event Azolla fern Arctic Ocean Eocene carbon sequestration CO₂ drawdown

O_3_15 Verified Earth Anomalies

O_3_15 — Blue Holes: Submerged Sinkholes & Marine Geology

Blue holes are submerged sinkholes or vertical cave systems formed in carbonate rock (limestone, dolomite) during periods of lower sea level and subsequently flooded by rising oceans. Named for the deep blue color that c

blue hole Dean's Blue Hole Great Blue Hole Belize Bahamas karst

ZF_5_12 Verified Oceanography

ZF_5_12 — Paleocene-Eocene Thermal Maximum: Ancient Anoxic Ocean Crisis

The Paleocene-Eocene Thermal Maximum (PETM), occurring approximately 55.8 million years ago (latest Paleocene), was one of the most dramatic and rapid climate change events in the Cenozoic, offering the closest geologica

PETM Paleocene-Eocene Thermal Maximum hyperthermal carbon isotope excursion CIE ocean acidification

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