Fig. 1: Geological background for the Proterozoic strata in Jixian Section.
From: Large igneous provinces played a major role in oceanic oxygenation events during the mid-Proterozoic
a Distribution of 1.6–1.3 Ga and 1.3–1.2 Ga LIP and 1.8–1.0 Ga extensional basins in a paleogeographic reconstruction map of supercontinent Columbia (Nuna)43, red box marks the North China craton. b Distribution of the mid-Proterozoic extensional basins in North China Craton5,6. c Regional map of the Proterozoic outcrop within the Yanliao Basin, showing the position of the Jixian section.
