Geochemistry of sediments from the Cretaceous-Tertiary boundary
收藏B2FIND2026-04-05 收录
官方服务：
资源简介：
Siderophilic element concentrations are high in sediments from the Cretaceous-Tertiary boundary. An extraterrestrial source is indicated. Concentrations are too high to be...
白垩纪-第三纪界线沉积物中的亲铁元素（Siderophilic element）含量较高。该现象指示了地外来源，其浓度过高以至于无法……
