Geochemical changes at the Permian–Triassic transition in Southern Alps and adjacent area: a review

Abstract

Compilation of the recent literature from the Southern Alps and adjacent area confirms the geochemical
variations of unusual amplitudes during the Permian-Triassic boundary interval (PTBI). A great attention
has been given to the negative δ13C anomaly within the Tesero Member close to the Permian-Triassic
boundary. Very detailed geochemical works have been done on the scientific Gartnerkofel core (Gk-1) and
on the Slovenian sections. Major minor and rare earth elements (REE) data are reported and show a marked
enrichment in alkaline metals and REE of some levels of the boundary interval. But recent studies show that
the low Iridium anomalies and the Osmium and Helium isotopes anomalies lack the characteristics of a large
extraterrestrial impact.