SINOPEC Exploration & Production Research Institute

Palaeoenvironment and Productivity-Driven Organic Matter Enrichment in the Upper Permian Dalong Formation Shales, Northeastern Sichuan Basin

Abstract The Upper Permian Dalong Formation in the northeastern Sichuan Basin contains organic-rich siliceous shales deposited in the Kaijiang–Liangping Trough, but the relative roles of productivity, redox conditions, and nutrient supply in organic matter enrichment remain debat...