福建石炭纪岩相古地理分析  

On Carboniferous Sedimentary Facies and Palaeogeography in Fujian Province

作　　者：吴岐 郑云钦[1] 

机构地区：[1]福建省区域地质调查队,三明365001

出　　处：《福建地质》1993年第4期300-319,共20页Geology of Fujian

摘　　要：笔者总结了福建省石炭纪生物地层与岩石地层的研究成果,提出了生物地层与岩石地层的划分对比。在详尽的相分析基础上对该纪地层进行了相系、相、亚相及微相的划分,并按“优势相”的原则分期编制了林地期、黄龙期及船山期的岩相古地理图。笔者采用“相、层、位”控矿观点对石炭纪的矿产成因及成矿规律作了探讨。Carboniferous is the most important ore-bearing strata in Fujian Province and the southwestern Fujian depression is an important part of the iron-manganese metallogenetic belt. Based on the synthetical analysis of 40 profiles of carboniferous sedimentary facies in Fujian Province, including lithological features, fossil assemblages and sedimentary sequence, the author took a compilation of lithofacies and palaeogeographic maps of Lindi, Huanglong and Chuagshan epoches in three stages according to the conception of 'dominant facies'. The terrigenous deposition of Lindi epoch can be divided into alluvial fan subfacies, braided and meander river suhfacies from north to south in the Southwestern Fujian depression. The clastic and carbonate deposite of Huanglong epoch can be divided into delta plain, delta front, tidal mud flat, tidal sandy flat and tidal mix flat subfacies in the eastern part of the Southwestern Fujian depression, and into subtital lagoon, subtidal, supratidal, intertidal subfacies in the western part of the Southwestern Fujian deprssion. Up to Chuangshan epoch, the transgression become larger and larger, and the Southwestern Fujian depression Was wholly covered with carbonate sediments except for the old land margin. They can be divided into two parts: the restricted marine platform in the east and the open marine plateform in the west which are linked by an underwater uplift belt. The restricted marine platform is composed of bioherm, subtidal, tidal flat lagoon and intertidal mud flat subfacies, and the open marine platform composed of plateform and platform margin subfacies. The ore-manganese ore deposits in Fujian Province possess obviously a stratabound features, which have a close relation to the clastic tidal flat subfacies.

关 键 词：石炭纪 岩相 古地理 沉积相 

分 类 号：P531[天文地球—古生物学与地层学]