传统的煤沉积模式难以解释其超厚煤层的成因。
Traditional coal depositional model can hardly explain the cause of this extra-thick coal seam.
本文提出了拉伸煤盆地最一般的沉积—构造模式，并用以解释盆地结构的演化和泥炭聚积的条件。
A generalized sedimentary-tectonic model for extensional coal basin is presented, together with the explanation for the evolution of basin architecture and the conditions of peat accumulation.
稀土元素分布模式与华北晚古生代沉积的特征是一致的，表明煤样稀土元素分布模式是由源岩继承下来的。
The distribution pattern of REE is in accordance with the characteristic of Late Paleozoic sediments in North China platform, reflecting that it is inherited from the source rock.
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