The solube organic matters character of mudstone distinguished expressly from coal, which organic matters of dark argillite can be preserved better because of higher sedimentary water salinity.

  • 由于沉积水体咸度相对较高,对泥岩有机质具有一定的保护作用,上古生界泥岩可溶有机质与煤岩可溶有机质性质具有明显地差别。

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