New data from ICDP borehole SK2 and its constraint on the beginning of the Lower Cretaceous Shahezi Formation in the Songliao Basin, NE China

Affiliations

• ¹ Key Laboratory for Evolution of Past Life and Environment in Northeast Asia, Ministry of Education, Jilin University, Changchun 130026, China; College of Earth Sciences, Jilin University, Changchun 130061, China.
• ² Key Laboratory for Evolution of Past Life and Environment in Northeast Asia, Ministry of Education, Jilin University, Changchun 130026, China; Research Center of Palaeontology and Stratigraphy, Jilin University, Changchun 130026, China. Electronic address: gaoyoufeng@jlu.edu.cn.
• ³ Chinese Academy of Geological Sciences, Beijing 100037, China.
• ⁴ College of Earth Sciences, Jilin University, Changchun 130061, China.
• ⁵ College of Paleontology, Shenyang Normal University, Shenyang 110034, China.