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- The Chicxulub impact, which volatilized massive amounts of sulfur containing rocks, caused a very rapid acidification of the oceans which can not be attributed to the Daccan eruptions.
This NY Times article discusses findings based on iostopes of Boron in ocean sediments that indicate a geologically instant acidification of the oceans following the Chicxulub impact.
The Daccan traps (resulting from an eruption of over 200,000 cubic miles of lava in about a million years) were thought to have been involved to some extent in marine extinctions at the time, but the apparent (geologically) instant acidification of the oceans at the time of the impact is taken as a refutation of that premise.
The rate of acdification due to the impact is claimed to be comparable to the current rate of acidification of the oceans due to increased CO2 levels.
The Daccan traps (resulting from an eruption of over 200,000 cubic miles of lava in about a million years) were thought to have been involved to some extent in marine extinctions at the time, but the apparent (geologically) instant acidification of the oceans at the time of the impact is taken as a refutation of that premise.
The rate of acdification due to the impact is claimed to be comparable to the current rate of acidification of the oceans due to increased CO2 levels.