摘要
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 the paper, grain-size analyses, mineral identification and electron microscope scanning of quartz were made for 'Old Red Sand' collected from Fujian coast. The result shows that compositon of 'Old Red Sand' is mainly mid-fine sand, in which the content of mid-fine sands is commonly over 70% and the contents of both clay and silt are less. The probability cumulative curves of its size are mainly two-segement pattern of saltation suspension and three segement patten of taction (mixing) - saltation- suspension. As for mineral composition of 'Old Red Sand', light minerals are mainly composed of quartz, and feldspar is less; heavy minerals of higher content are first cosist of magnetite, ilmenite, leucoxene, and next are ziroon, hemitite, limonite, tourmaline, epidote, etc. And some rough knowledge was brought up for forming reason of the 'Old Red Sand' in Fujian coast.
出处
《东海海洋》
1992年第2期62-72,共11页
Donghai Marine Science
