中文摘要：

在详细介绍一种获得粒度资料的新技术——图像分析技术的基础上,选取青藏高原乌丽地区乌丽群含石榴子石的纯石英砂岩作为研究对象,对其进行了详细粒度分析研究。结果表明,该技术不仅原理可靠,实现容易,应用方便,且检测速度快,测量精度高,结果稳定性好。该技术主要通过图像采集、图像处理、目标测量、数据处理和结果解释等一系列必要的操作来获取图像信息,可望在沉积学领域获得广泛的应用。

英文摘要：

This paper introduces a kind of new technology of an image-analysis technique to obtain grain-size data,and selects a pure quartz sandstone with a litter garnet in Wuli Group of the Qinghai-Tibet Plateau region as a study case object,and to carry out a detailed analysis of grain-size.The results show that this technique is not only reliable,easy and convenient,but also fast in detection,accurate in measurement,and stable in result.Image analysis consists of all operations necessary to obtain quantified information from images,including image acquisition,image processing,measurements,data processing,and interpretation.It will be available to a wide range of applications in sedimentology field.