granted by National Nature Science Foundation of China(41472082,41402100,49772121,40172044,and 41173065);Institute of Geology,Chinese Academy of Geological Sciences,ChinaGeological Survey(DD20190448 and DD20190370).
This study covers cosmic spherules derived from the Mesoproterozoic Dahongyu Formation in the Ming Tombs area, Beijing. The cosmic spherules include iron oxide cosmic spherules, carbonaceous chondrites, and atomic iro...
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...
Abstract: This paper discusses the distribution pattern and geological significance of the carbon and oxygen isotopes (δ13C and δ18O) in the depositional sequences of Gaoyuzhuangian, Yangzhuangian and Wumishanian ag...