Analysis on Characteristics and Correlation of Coal-Bearing Stratigraphic of Lower Cretaceous in Erenhot Basins

In order to establish the correlation framework of the coal- bearing strata of the Erenhot Basins, Inner Mongolia, through the comprehensive contrast of t he paleontological features, marker beds and lithology- faces cycles features, it was used that the multiple stratigraphic classification and correlation methods in this pa per, and Cypridea- Limnocpridea- llyocyprimorpha ostracods and Pliosisporites-Kuylisporites Radiatifermisessi- Ngularis- Impardecispora Cavernosus spore pollen wer e separately distributed in the whole region in the Damoguaihe Formation and the Yimin Formation, and simultaneously the mudstone member of the third section of Da moguaihe Formation could be used as a marked bed. The correlation results were credible. Conclusions: Erenhot basins of the Lower Cretaceous coal- bearing strata W ere divided into two formations ( including 5 members) . The 3 lower members, including the under coal- bearing member, were attributed to Damoguaihe Formation an d the 2 upper members, including the upper coal- bearing member, belong to Yimin Formation. So the spatial distribution pattern of coal- bearing formation of the Lower Cretaceous strata was basically established in Erenhot basins.