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Journal of Palaeogeography
Fig. 1 | Journal of Palaeogeography

Fig. 1

From: Characteristics and origin of a new type of polyhalite potassium ore in the Lower Triassic Jialingjiang Formation, Puguang area, northeastern Sichuan Basin, SW China

Fig. 1

a Map showing geographic position of the study area in Sichuan Basin, southwestern China. Black thick solid lines outline the Sichuan Basin; gray thick solid lines are boundaries of tectonic units of the Sichuan Basin (modified from Zhang et al. 2018). The inset map of China is modified after the Standard Map Service of the National Administration of Surveying, Mapping and Geoinformation of China (http://bzdt.ch.mnr.gov.cn/) (No. GS(2016)1603). b Basement faults and wells in the northeastern Sichuan Basin (modified from Tang et al. 2008). c Schematic cross-section showing evolution mode of the Puguang area (modified from An et al. 2009). For information on the members T1f, T1j3, T1j4, T2l1–3, T3x, see Fig. 2

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