福建建瓯地区“竹洲砾岩”的厘定  

Redefinition of the "Zhuzhou conglomerate" in the Jian'ou area, Fujian, China

作　　者：余心起[1] 吴淦国[1] 张达[1] 狄永军[1] 林东燕[1] 石建基[1] 张祥信[1] 汪群峰[1] 黄火剑[1] 

机构地区：[1]中国地质大学地质过程与矿产资源国家重点实验室

出　　处：《地质通报》2006年第5期580-584,共5页Geological Bulletin of China

基　　金：国家自然科学基金项目(批准号:40372050);中国地质调查局项目(编号:200310200064)资助。

摘　　要：对发育于福建建瓯市迪口镇竹洲村的“竹洲砾岩”的野外调查和室内研究表明,该砾岩既不是前震旦系马面山群龙北溪组的底部砾岩,也不是构造砾岩,而是相当于晚三叠世大坑组(T3d)层位的底砾岩,不整合沉积在前震旦系迪口组之上。Field survey and laboratory study of the ＂Zhuzhou conglomerate＂ at Zhuzhou Village near Dikou Township, Jian＇ou City, Fujian, indicate that the ＂Zhuzhou conglomerate＂ is neither the basal conglomerate of the pre-Sinian Longbeixi Formation of the Mamianshan Group nor structural brecciate in the pre-Sinian basement, but the basal conglomerate stratigraphically equivalent to the Late Triassic Dakeng Formation （T3d）, unconformably overlying the pre-Sinian Dikou Formation. This discovery has great significance for the intensive study of the Precambrian tectonic evolution of the area.

关 键 词：“竹洲砾岩” 沉积底砾岩 大坑组 晚三叠世 福建建瓯地区 

分 类 号：P534.51[天文地球—古生物学与地层学]