The Carnian Pluvial Event (CPE) was a major change in global climate and biotic turnover that occurred during the Carnian, early Late Triassic, ≈230 million years ago.
The base of the CPE is marked by a ≈4‰ negative shift in carbon stable isotopes (δ13C) of fossil molecules (n-alkanes) from higher plants and total organic carbon. A ≈1.5‰ negative shift in oxygen stable isotopes (δ18O) of conodont apatite suggests a global warming. Major changes in organisms responsible for calcium carbonate production occurred during the CPE. A halt of carbonate sedimentation is observed in deep water settings...