基于层序地层研究，区内聚煤作用主要发育于三级层序SQ1，SQ3，SQ4海侵体系域中，发育“根土岩—煤—粉砂岩／泥质粉砂岩／粉砂质泥岩／石灰岩”序列。海侵作用早中期，较高的泥炭堆积速率与可容纳空间增加速率相平衡，沉积了区域稳定分布的厚煤层6，14和29号煤层，最大海泛面附近的煤层较薄甚至不发育。%Based on the study of sequence stratigraphy, coal accumulation mainly developed in third order se-quences as SQ1,SQ3 and SQ4. The sequence of root soil rock coal siltstone, rgillaceous siltstone, silty mud-stone and limestone also developed in this area. In early and middle period of sea intrusion, due to the balance be-tween high equilibrium rate of peat accumulation and increasing rate, No.6, 14 and 29 thick coal seam with region-al and stable distribution deposited in this area. The coal seam near the maximum marine surface were thin and even not developed.
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