煤田地质与勘探

2015, v.43;No.252(06) 12-22

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山东彭庄煤矿石炭–二叠系孢粉特征与成煤环境
Carboniferous and Permian palynological assemblages and the coal forming environment in Pengzhuang coal mine of Shandong Province

田臣龙,李守军,徐凤琳,赵秀丽
TIAN Chenlong,LI Shoujun,XU Fenglin,ZHAO Xiuli

摘要(Abstract):

利用钻孔岩心资料对彭庄煤矿的石炭–二叠系各个组段的孢粉组合特征进行了系统研究。根据孢粉化石的纵向分布规律及其含量变化,识别出四个孢粉组合,自下而上分别是:太原组Laevigatosporites perminutus-Granulatisporites granulatus组合;山西组Gulisporites cochlearius-Leiotriletes adnatusSinulatisporites sinensis组合;下石盒子组Apiculatisporites aculeatus-Gulisporites laevigatus-Macrotorispora minuta组合,上石盒子组Patellisporites meishanensis-Sinulatisporites sinensis-Florinites antiquus组合。依据地层岩石特征,初步恢复了本区的成煤环境:太原组为海陆交互相沉积环境,而从山西组开始沉积环境逐渐转变为三角洲平原相为主的过渡相沉积环境。
The Carboniferous and Permian palynological assemblages were studied by using core data in Pengzhuang mine. According to the vertical distributions and abundance variation of miospore species in the strata, four palynological assemblages were recognized in ascending order, viz. Taiyuan formation: Laevigatosporites perminutusGranulatisporites granulatus; Shanxi formation: Gulisporites cochlearius-Leiotriletes adnatus- Sinulatisporites sinensis; Shihezi formation: I Apiculatisporites aculeatus-Gulisporites laevigatus-Macrotorispora minuta(Lower Shihezi Formation), II Patellisporites meishanensis-Sinulatisporites sinensis-Florinites antiquus(Upper Shihezi Formation). Based on lithological features of the Carboniferous and Permian deposits in Pengzhuang mine, the coal-forming environments of that time, which is important for exploitation of coal resources, was reconstructed preliminarily. The coal forming environment in Pengzhuang mine is marine-terrigenous facies in Taiyuan Formation. From Shanxi Formation upward, coal-forming environment started to become transition facies composed mainly of delta plain.

关键词(KeyWords): 石炭系;二叠系;彭庄煤矿;孢粉组合特征;成煤环境
Carboniferous;Permian;Pengzhuang mine;palynological assemblages;coal-forming environments

Abstract:

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基金项目(Foundation): 中国科学院南京地质古生物研究所现代古生物学与地层学国家重点实验室开放课题(123104)

作者(Author): 田臣龙,李守军,徐凤琳,赵秀丽
TIAN Chenlong,LI Shoujun,XU Fenglin,ZHAO Xiuli

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