地质与勘探2011，Vol.47Issue(4)：555-565,11.
福建小溪组地层层序、岩石组合及时代研究新进展
New Progress on the Study of Stratum Sequence, Rock Association and Epoch of the Xiaoxi Formation in Fujian province
摘要
Abstract
The Xiaoxi formation is one of the most important of late Mesozoic volcanic strata in the east of Fujuan Province, which is a major pyrophyl- lite-containing stratum. However, after Xiaoxi formation was formed, there are different opinions on it. Based on the systematic study of sections and geo- logical investigations on a scale 1：250 000 in four areas, including Zhouning county, it is considered that the Xiaoxi formation represents the early stage of early-Cretaceous terrestrial volcano-sedimentary rock series, which forms a complete sediment-eruption cycle. The magma is of basic, intermediate, inter-acidic and acidic property, which is unconformable on the Nanyuan formation and unconformably covered by the Shimaoshan Group. Moreover, this formation is divided into five lithologic segments from bottom to top based on stratum sequence, contact relationship, lithologic association characteristics, volcanic activity cycles and magma evolution. And it is ascertained that the strata is the early stage of early-Cretaceous through analysis to the data of strata contact retationship, hiome and isotope dating.关键词
层序/岩石组合/早白垩世早期/小溪组/福建Key words
rock association/early stage of early-Cretaceous period/Xiaoxi formation/Fujian分类
天文与地球科学引用本文复制引用
林敏..福建小溪组地层层序、岩石组合及时代研究新进展[J].地质与勘探,2011,47(4):555-565,11.基金项目
国土资源大调查项目（项目编号：200413000016）1：250000周宁县、福州市、莆田市（半幅）、泉州市（半幅）等四幅区调项目资助. （）
