摘要
本文论述了我国若干地区不同时代地层中宇宙尘的物理特性、化学成分和微结构特征,并同深海沉积的铁质尘粒进行了对比。笔者以为,这些宇宙尘是球外物质,可能是铁陨石在大气中的消熔物或是在太空中的碎裂物。
In this paper, physical properties, chemical compositions and microstructural characters of cosmic dusts from different strata in some areas at China are dis-cussed, and contrasted with magnetic spherules from various oceans. It is believed that these cosmic dusts are of extraterrestrial origin. It might be the droplets sprayed from the fusion crust of a meteorite as it is ablated by grazing in atmo-sphere .
出处
《地球科学（中国地质大学学报）》
EI
CAS
CSCD
北大核心
1990年第2期172-182,T003,共12页
Earth Science-Journal of China University of Geosciences
基金
国家自然科学基金资助项目
关键词
宇宙尘
铁纹石
陨石
消溶型
cosmic dust, kamacite, fusion-type of meteorite.
