海侵成煤和事件成煤是鄂尔多斯盆地晚古生代煤聚积的基本特色。
Transgressive coal forming and coal forming under event are the essential features of Late Palaeozoic coal accumulation in Ordos basin.
华北晚古生代煤具有中部和南部变质程度较高而南部边缘和北部低的特点。
In north China, the late Paleozoic coal was metamorphosed mainly to middle and high ranking in the central and southern belts, but only to low, ranking in the northern belt and southern margin.
作者通过对豫西晚古生代煤中微粒体的研究提出了各向异性微粒体，对其次生成因提供了佐证。
The authors suggest that there is a kind of anisotropic micrinite existing in the Late Paleozoic coal seams of western Henan coal field, and the evidences of its secondary origin are provided.
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