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Isotopic Geochemistry of Evaporite‐Carbonate Sediments in Majiagou Formation Euxinic Systems with Implications for Evaluating Ordovician Northern Shaanxi Epicontinental Sea, Ordos Basin
Author(s) -
ZHAO Haitong,
ZHANG Yongsheng,
XING Enyuan,
WANG Linlin,
GUI Baoling,
SHANG Wenjun,
PENG Yuan,
SHI Lizhi
Publication year - 2018
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/1755-6724.13524
Subject(s) - beijing , geology , mineral resource classification , evaporite , china , geochemistry , mining engineering , carbonate , carbonate rock , chinese academy of sciences , structural basin , archaeology , geomorphology , sedimentary rock , geography , materials science , metallurgy
The Ordovician Shaanxi salt basin is located in the junction of the North China Sea and the Qilian Sea.In 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., 2017). These findings will be used to reconstruct Middle Ordovician palaeoenvironment in contrast with equivalents during the same geological time.