Phytoplankton evidence for the timing and correlation of palaeoceanographical changes during the early Toarcian oceanic anoxic event (Early Jurassic) From: Journal of the Geological Society | Date: July 1, 2004| Author: Mattioli, Emanuela; Pittet, Bernard; Palliani, Raffaella Bucefalo; Rohl, Hans-Joachim; Et al | Copyright Geological Society Publishing House Jul 2004. Provided by ProQuest LLC.Copyright information

Abstract:

The causes and duration of the early Toarcian anoxic event are controversial. Integration of data from calcareous and organic phytoplankton provides a biochronological framework that allows precise correlations across the western Tethys. In particular, the Carinolithus superbus nannofossil Zone can be used to correlate the levels enriched in organic matter and the related [delta]^sup 13^C negative excursion. Although a variable duration is given in the literature for this neg...