Trace Element Compositions in Conodont Phosphates Responses to Biotic Extinction Event: A Case Study for Main Act of Global Boundary Stratotype Section and Point of the Permian-Triassic
Trace element compositions in Upper Permian conodonts with low color alteration index were measured in situ by laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) from a stratigraphic section of the Meishan in Changxing, Zhejiang Province. The results show that the Ce anomalies and rare earth element (REE) concentrations are characterized by fast fluctuation. These features indicate highly fluctuating environmental conditions including redox and instable ecosystem conditions during the P/T transition.