国家自然科学基金(s49772121)

作品数:1被引量:3H指数:1
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相关期刊:《Acta Geologica Sinica(English Edition)》更多>>
相关主题:MESOPROTEROZOICGACOSMICPROTEROZOICSPHERULES更多>>
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A Study of Mesoproterozoic Iron Cosmic Micro-spherules from 1.8 Ga and 1.6 Ga Old Strata in the Ming Tombs District,Beijing被引量:3
《Acta Geologica Sinica(English Edition)》2007年第4期649-657,共9页SONG Tianrui HE Zhengjun WAN Yusheng and LIU Yanxue Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037 
This work was granted by National Nature Science Foundation of China (Nos. 49772121, 40172044 and 40672082).
Numerous iron cosmic micro-spherules have been discovered from Mesoproterozoic strata including the Changzhougou Formation (1.8 Ga) and the Dahongyu Formation (1.6 Ga) of the Ming Tombs district, Beijing. There ar...
关键词:PROTEROZOIC cosmic spherule helium isotopes extraterrestrial material carbonaceous chondrite 
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