山东二叠系石盒子组孢粉特征及古气候意义  

Characteristics of Sporopollen and Paleoclimate of the Permian Shihezi Formation in Shandong Province

作　　者：李守军[1,2] 田臣龙[1,2] 徐凤琳[1,2] 陈茹[1] 殷天涛[1] 赵秀丽[1,2] 

机构地区：[1]山东科技大学地球科学与工程学院,山东青岛266590 [2]现代古生物学与地层学国家重点实验室,中国科学院南京地质古生物研究所,南京210008

出　　处：《地质论评》2014年第4期765-770,共6页Geological Review

基　　金：现代古生物学与地层学国家重点实验室(中国科学院南京地质古生物研究所)开放课题(编号123104)资助的成果

摘　　要：对山东彭庄煤田、淄博地区二叠系石盒子组各段进行采样,经孢粉分析、鉴定和统计,共发现46属62种及部分未定种,根据孢粉化石的纵向分布规律及其含量变化,自下而上建立三个孢粉组合:Ⅰ.Apiculatisporites—Gulisporites—Laevigatosporites(黑山段);Ⅱ.Patellisporites—Densosporites—Florinites(万山段、奎山段);Ⅲ.Anapiculatisporites—Cordaitina(孝妇河段)。孢粉组合特征表明,石盒子组沉积时期植物属于华夏植物群面貌,与下伏地层沉积时期不同的是裸子植物越来越繁盛,且种类越来越丰富,表明气候较下部地层趋于干旱。同时依据二叠系山西组植物群的组成、形态和总体面貌的变化,分析了山东二叠纪的古气候状况及其演变历程,即山西组、石盒子组黑山段沉积时期为温暖半潮湿气候;石盒子组万山段、奎山段、孝妇河段沉积时期为干旱气候。The samples in Permian strata in Pengzhuang and Zibo are studied,42 genera and 146 species sporopollen fossils have been found by analysis and identification.According to the content change and vertical variation of sporopollen fossils in the strata,the sporopollen can be distinguished into 3 assemblages as follows （in descending order）：Ⅰ.Apiculatisporites-Gulisporites-Macrotorispora （Heishan Member）,Ⅱ.Patellisporites-Sinulatisporites-Florinites （Wanshan Member,Kuishan Member）,Ⅲ.Anapiculatisporites-Cordaitina （Xiaofuhe Member）.The analysis showed that the palynological assemblage of the Shihezi still belongs to Cathaysia flora.Differently,gymnosperms are increasingly prosperous and varied,which indicates the upper stratum tends to be drought.Simultaneously,based on the Shanxi Formation of Permian,shape and overall appearance changes,ancient climatic conditions during the Permian and its evolution is that：the Shanxi Formation,Heishan Member （the Shihezi Formation） during the deposition of the warm humid climate; the Wanshan,Kuishan and Xiaofuhe Member（the Shihezi Formation） during the deposition of arid climate.

关 键 词：石盒子组 孢粉组合 古气候 山东 二叠系 

分 类 号：P534.46[天文地球—古生物学与地层学] Q913[天文地球—地质学] P532[生物学—古生物学]