| 三种粒度分析方法的比较 |
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| 引用本文： | 朱莲芳,怀彦.三种粒度分析方法的比较[J].沉积学报,1990,8(2):127-134. |
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| 作者姓名： | 朱莲芳 怀彦 |
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| 作者单位： | 中国科学院兰州地质研究所 |
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| 摘 要： | 碎屑岩沉积物的三种粒度分析方法即筛析法、图象法、和颗粒计数法。通过同一样品三种方法试验得出可比性,应用概率累计曲线图及参数说明符合率。文中评价了各种方法的优缺点和适用范围,以期达到根据条件选择方法的目的。
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| 关 键 词： | 粒度分析、筛析、图像、颗粒计数 概率曲线 参数 评价 对比 |
| 收稿时间： | 1989-04-07 |
COMPARISION OF THREE ANALYTICAL METHODS OF GRAIN GRADE |
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| Institution: | Lanzhou Institute of Geology, Academia Sinica |
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| Abstract: | Analysis of grain grade is widely used in geology for studying sedimeust transimition and sedimental environments. Besides the conventioned sieve analysis, there occure some new methods, such as computer-controled IAS-FLUS image analysis instrument and the microscope combined with WDJ.But wich one is the most economically benificial method and how to improver the analytical speed and precision.In this study, some different samples have been analysed with the three methods and the results fiave been coprnared.Some conclusions obtained as follow:1. Sieve analysis is suitable for cohesionless sandestone especially for wind, river, lake-formed sandstone after Cenozic and Mesozoic,2. TAS-PLUS image aualysis instrument is beter for quartz-sandstone, fundamentally cemented saudstone, striped sandstone and differently lighted sandstone. 3, The microscope combined with WDJ is suitable for most kinds of sandstone.Even though it could be widely used. the oberservating is very difficult under microscope and influnced by some manal factions.So, using a suitable method is important for benified sample analysis. |
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