Research Article

Difference Analysis of Organic Matter Enrichment Mechanisms in Upper Ordovician-Lower Silurian Shale from the Yangtze Region of Southern China and Its Geological Significance in Shale Gas Exploration

Figure 1

Sedimentary characteristics of the late Ordovician-early Silurian in southern China. The X-1 well is located in the upper Yangtze region, which is a deep-water shelf environment that is surrounded by ancient land; the Y-1 well is located in the lower Yangtze region, close to the junction of the Yangtze Plate and the Cathaysian Plate [24, 25, 29].