Figure 1

Distribution of the bidirectional provenance system in the Jiyuan area of the Ordos Basin, modified from reference13. Created using CorelDRAW-X9 21.2.0.706 (http://www.coreldraw.com/cn/).

Distribution of the bidirectional provenance system in the Jiyuan area of the Ordos Basin, modified from reference13. Created using CorelDRAW-X9 21.2.0.706 (http://www.coreldraw.com/cn/).