论文部分内容阅读
本文对采自福建沿海的老红砂作了粒度分析、矿物鉴定和石英电镜扫描。结果表明,组成老红砂的成分主要为中细砂,砂含量大于70%,粘土和粉砂含量较少。概率累积曲线多为跳跃、悬浮两段式,其次为滚动、跳跃、悬浮三段式。轻矿物以石英为主,长石含量居次。含量较高的重矿物有磁铁矿、钛铁矿、白钛石,其次有锆石、赤铁矿、褐铁矿、电气石、绿帘石等。文章对老红砂的成因提出一些粗浅的看法。
In this paper, the particle size analysis, mineral identification and quartz electron microscopy scanning of the old red sand collected from the coast of Fujian were carried out. The results show that the composition of the old red sand is mainly fine sand, sand content of more than 70%, less clay and silt content. The cumulative probability curve is mostly jumping, two-stage suspension, followed by rolling, jumping, floating three-stage. Quartz-based light minerals, followed by feldspar content. Heavy mineral content of magnetite, ilmenite, white titanium stone, followed by zircon, hematite, limonite, tourmaline, Ephedra and so on. The article puts forward some superficial views on the causes of the old red sand.