Ignorance Concerning Episodes of Ocean-Wide Stagnation*

摘要: Abstract Episodes of basin-wide abyssal stagnation have occurred in the Mediterranean Sea during “glacial” Pleistocene and on a much larger scale Atlantic Indian Oceans Cretaceous Period. The sedimentary products euxinification are organic-rich sapropels which accumulated an order magnitude more carbon than that is present all known world reserves coal petroleum. storage strata excess sulfur form fossilized photosynthetic substances pyrite thought to led significant global increase atmospheric oxygen unusual sequence calcium-rich evaporitic salts South Aptian. Stagnant episodes effectively destroyed benthic life formerly existing substratums underlying hydrogen-sulfide bearing anoxic bottom waters. Locally thin topographic highs near paleo-equator Pacific Ocean owe their origin intermittently expanding oxygen-minimum zone as contrasted total within deep basins Oceans. In context both land sea areas, late Mesozoic may conceivably been major “carboniferous” period earth since end Precambrian.