山东滕州煤田中生界下部地层的时代问题

Geological age of lower mesozoic group in Tengzhou coalfield,Shandong

滕州煤田中生界下部地层“滕１段”孢粉分析表明，裸子植物花粉含量达到了９０．６８％，其中Ｃｌａｓｏｐｏｌｉｓ达４０．７％；蕨类植物孢子达９．２８％．与其它地区进行对比，结果显示其地质时代应属早侏罗世晚期的中。

The pollen analysis of Lower Mesozoic Group in Tengzhuo coalfield shows that the total content of gymnospermons pollens is up to 90 68%,with the Classopollis up to 40 70% and the pteridophyte spores up to 9 28%.The above assemblages,in correlation with those of other areas,indicate that the geological age of Lower Mesozoic Group in Tengzhuo coalfield should be middle late member of Early Jurassic.