摘要
Objective The Ordovician Shaanxi salt basin is located in the junction of the North China Sea and the Qilian Sea.ln this basin the Majiagou Formation accumulated more than 1000m thick evaporite-carbonate sediments, and this basin is divided into east and west saltern sags （ESS, WSS） according to the characteristics of geochemical analysis （Zhang Yongsheng et al., 2014）. Isotope stratigraphy of evaporite sediments represents a fundamental tool in palaeoenvironmental and palaeoclimate reconstruction. This work first illustrates the stable isotope geochemistry of the Shaanxi evaporites, which represents the most significant example of detailed facies stratigraphy for the Majiagou Formation evaporite-carbonate （M5） in Ordos epicontinental sea （Liu Jingdong et al.,
Objective The Ordovician Shaanxi salt basin is located in the junction of the North China Sea and the Qilian Sea.ln this basin the Majiagou Formation accumulated more than 1000m thick evaporite-carbonate sediments, and this basin is divided into east and west saltern sags （ESS, WSS） according to the characteristics of geochemical analysis （Zhang Yongsheng et al., 2014）. Isotope stratigraphy of evaporite sediments represents a fundamental tool in palaeoenvironmental and palaeoclimate reconstruction. This work first illustrates the stable isotope geochemistry of the Shaanxi evaporites, which represents the most significant example of detailed facies stratigraphy for the Majiagou Formation evaporite-carbonate （M5） in Ordos epicontinental sea （Liu Jingdong et al.,
基金
This work was funded by the National Key R&D Program of China(grant No.2017YFC0602806)
Geological Survey Project of China Geological Survey(grant No.121201103000150011 and 121201103000168508)
Open Project of State Key Laboratory of Resource and Prospecting(grant No.PRP/open-1308)
