The paper first reported the geochemistry of lower Carboniferous mudstones from core samples in Eastern Junggar.

The biomarkers indicate a dysoxic to reductive, high salinity sedimentary environment in Dishuiquan formation.

Numerous parameters testify that the increasing terrigenous organic matter along with decreasing of salinity and oxidation.

Organic geochemistry, combined with tectonic setting demonstrates a restricted semi-closed marine during early Carboniferous.