研究内蒙古准格尔旗黑岱沟太原组上部6号煤层3个煤样中的孢粉,共发现孢粉27属43 种,包括藻类胞囊3属3种,称之为Punctatosporites minutus-Thymospora thiessenii-Laevigatosporites minutus组合.组合以蕨类植物孢子占绝对优势(98%),其中以真蕨类(尤其辉木Psaronius之类)的小单缝孢子(约>50%)为主,种子蕨次之,楔叶类居第三位,乔木石松类孢子和科达类花粉极少.这种情况在华北"太原期"甚至整个二叠纪煤层中不同程度地普遍存在,与华北几个地点已知煤核中植物化石以鳞木类或/和科达类占优势形成鲜明反差,也与欧美区晚石炭世早期煤层孢粉有重要区别,但却与美国晚石炭世晚期(Stephanian)煤层孢粉植物群近似.结合已有原位孢子资料,推论有关母体植物的古生态和华北二叠纪的成煤植物,并尝试解析形成上述反差的原因.

Palynological study of the Carboniferous Permian coal bearing strata in China has contributed quite a wealth of publications since the sixties of the last century. Most of them, however, served the purposes of stratigraphical dating and correlation as well as of basic research such as the description of many taxa, etc.,only a few papers were specifically dealing with spores and pollen from coals (Imgrund, 1960; Liao, 1987a,b; Yao and Lu, 1992; Tang, 1997). No attempt to discuss the mire flora or coal forming plants and their ecology has been made so far.

Q914.5 Q914.6

国家重点实验室基金，024102，