期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
Distribution of Carbon and Oxygen Isotopes in theSequence Stratigraphic Framework of the Middle andUpper Proterozoic in the Ming Tombs Area, Beijing
1
作者 LI Rufeng 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 1998年第2期207-216,共10页
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... 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 ages of the established Middle and Upper Proterozoic sequence stratigraphic framework in the Ming Tombs area lying in western Yanshan Mountain of Beijing. Besides, sketchy determination of δ13C and δ18O was also performed for other formations and members. The analytical results show the following: under the condition of clear-water carbonate sediments, δ13C and δ18O, featuring smaller variation of δ13C but larger variation of δ18O, can well delineate the relative change of sea level, which reflects the difference of primary sedimentary settings; in the presence of terrigenous substances, δ13C values vary greatly while δ18O slightly; the carbon and oxygen isotopes show marked changes at sequence boundaries. Besides, particular patterns can be found in regard to the distribution of carbon and oxygen isotopes within the sequences. 展开更多
关键词 ming tombs in the western Yanshan Mountains of Beijing Middle and Upper Proterozoic sequence stratigraphy carbon and oxygen isotopes
下载PDF
Imperial Tombs of the Ming Dynasty
2
《China Today》 2001年第5期26-31,共6页
关键词 Imperial tombs of the ming Dynasty
下载PDF
Imperial Tombs of the Ming and Qing Dynasties
3
《ChinAfrica》 2018年第8期60-61,共2页
Built between 1368 and 1911, The Imperial Tombs of the Ming (1368- 1644) and Qing (1644-1911) dynaslies includes Xianling Tombs of theMing Dynast). Eastern and Western Qing Tornbs, Xiaoling Tomb of the Ming Dynasty.
关键词 Imperial tombs of the ming and Qing Dynasties
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部