演題概要

ポスター発表

第2日　6月23日（木）　　P会場（501，502，503）

2P-07　　PDF

白亜紀末隕石衝突直後の古環境復元：局所親銅元素組成をもとにしたアプローチ

(¹筑波大生命環境・ ²高知大農林海洋)
^o丸岡照幸¹・ 西尾嘉朗²

One of the “Big Five” mass extinctions occurred at the Cretaceous-Paleogene (K-Pg) boundary (66.0 million years ago). Although the K-Pg mass extinction was triggered by a meteoroid impact, its killing mechanisms, i.e., environmental perturbations that induce the mass extinction after the meteoroid impact, are still unclear. In order to reveal such environmental perturbations, we have examined the micro-distribution of chalcophile elements that are highly enriched in the K-Pg boundary clays.