Extremely High Primary Productivity and Organic Matter Enrichment in Lacustrine Sediments: Late Triassic Chang 7<sup>3</sup> Sub-Member, Western Ordos Basin

<div>Element geochemical column of Chang 7<sup>3</sup> black shale in well DP1 showing paleoenvironment, paleowater depth, chemical weathering, and paleosalinity. Note that the dashed lines indicate the thresholds for these geochemical proxies.</div>

Geofluids

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Figure 8

Figure 8: Extremely High Primary Productivity and Organic Matter Enrichment in Lacustrine Sediments: Late Triassic Chang 7<sup>3</sup> Sub-Member, Western Ordos Basin 

Figure 8 | Extremely High Primary Productivity and Organic Matter Enrichment in Lacustrine Sediments: Late Triassic Chang 73 Sub-Member, Western Ordos Basin 