节点文献
Carbon and strontium isotope variations and responses to sea-level fluctuations in the Ordovician of the Tarim Basin
【Author】 JIANG Maosheng ZHU Jingquan CHEN Daizhao ZHANG Renhu QIAO Guangsheng Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China
【机构】 Institute of Geology and Geophysics,Chinese Academy of Sciences；
【摘要】 <正>In the Ordovician,a carbonate platform system grading from the platformal interior eastwards to basin was developed in the Tazhong area of the Tarim Basin,and the study column is located in the place where the paleoslope occurred.The isotope compositions of the carbonates there are thus considered as having reflected those of simultaneous sea waters in view of its good connection with the open seas.The carbon and strontium isotope compositions of the Ordovician carbonates in the Tazhong area are analyzed,and their relationships to the sea-level fluctuations are discussed as well.Studies have revealed that the carbon isotope composition is related positively with the sea-level fluctuations,whereas an opposing situation occurs to the strontium isotope variation.Similar responses of carbon and strontium isotope compositions to the sea-level fluctuations are reported elsewhere in the world,suggesting that the Ordovician sea-level fluctuations of the Tarim Basin were of eustatic implication.
【Abstract】 In the Ordovician,a carbonate platform system grading from the platformal interior eastwards to basin was developed in the Tazhong area of the Tarim Basin,and the study column is located in the place where the paleoslope occurred.The isotope compositions of the carbonates there are thus considered as having reflected those of simultaneous sea waters in view of its good connection with the open seas.The carbon and strontium isotope compositions of the Ordovician carbonates in the Tazhong area are analyzed,and their relationships to the sea-level fluctuations are discussed as well.Studies have revealed that the carbon isotope composition is related positively with the sea-level fluctuations,whereas an opposing situation occurs to the strontium isotope variation.Similar responses of carbon and strontium isotope compositions to the sea-level fluctuations are reported elsewhere in the world,suggesting that the Ordovician sea-level fluctuations of the Tarim Basin were of eustatic implication.
- 【会议录名称】 中国科学院地质与地球物理研究所2001学术论文汇编（第四卷）
- 【会议名称】中国科学院地质与地球物理研究所2001学术年会
- 【会议时间】2001-12-01
- 【会议地点】中国北京
- 【分类号】P597
- 【主办单位】中国科学院地质与地球物理研究所(Institute of Geology and Geophysics Chinese Academy of Sciences)