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论浙皖赣闽地区早古生代盆地沉积特征及其构造环境
ON SEDIMENTARY CHARACTERISTICS AND TECTONIC ENVIRONMENT FOR THE BASINS OF EARLY PALAEOZOIC IN ZHE-WAN-GAN-MIN REGIONS ( PROVINCES OF ZHEJIANG-ANHUI-JIANGXI-FUJIAN )
【摘要】 本文从沉积相特征及其展布入手,重点剖析赣南、闽北寒武系浊积岩,深水远源浊积岩与浙西上奥陶统浅水近源浊积岩的成因、环境,草编了早古生代各纪(统)的岩相略图,提出中奥陶世末期起的向北西方向拼贴挤压使南华(包括浙闽)隆起、并使研究区的沟造-沉积格局发生翘翘板式逆转:震旦纪—中陶奥世从北西到东南为台地和面向东南的被动陆缘,晚奥陶世—志留纪转化为盆地中心位于北西、并逐渐向北西迁移的板内盆地的构造-沉积格局。
【Abstract】 With the view of the characteristics and distribution of sedimentary facies, the original environments for iso-sedimented rocks,deep-water distant-sourced turbidites in Cambrian of Gannan ( South Jiangxi ) and Minbei ( North Fujian ) and shallow water near-sourced turbidites in the upper Ordovician in Zhexi (west Zhejiang ) were mainly analysed and the schema of lithofacies distribution for each period (series) of the early Palaeozoic were drafted. The authors proposed that regional northwestward piece together and connecting -pressing begun at the end of the middle Ordovician caused a uplift in South China ( including Fujian and Zhejiang ) , and a seesaw-typed reverse of the structure-sedimentation framework in the study area, where there had been a platform from northwest to southeast or a southeastward palaeo-passive continental margin during the Sinian-middle Ordovician, which were transformed into another structural-sedimentary framework of an intraplate basin with its center in the northwest and it was gradually drifted toward northwest from the late Ordovician to Silurian.
- 【文献出处】 石油实验地质 ,Petroleum Geology & Expeximent , 编辑部邮箱 ,1990年02期
- 【被引频次】9
- 【下载频次】109