粒度分析及其在沉积学中应用研究  

The Research Summary of Grain Size Analysis and its Application in the Sedimentation

作　　者：肖晨曦[1] 李志忠[1] 

机构地区：[1]新疆师范大学生命与环境科学学院,新疆乌鲁木齐830054

出　　处：《新疆师范大学学报（自然科学版）》2006年第3期118-123,共6页Journal of Xinjiang Normal University(Natural Sciences Edition)

基　　金：国家自然科学基金项目(40461002);教育部科学技术研究重点项目(地方205184);新疆维吾尔自治区高校科研计划基金重点项目(XJEDU2004I35);新疆师范大学科研基金(2005)联合资助

摘　　要：粒度是沉积物和沉积岩的主要特征之一,它可以作为沉积物及沉积岩分类的定量指标,可以反映沉积作用的流体力学性质,又能作为分析与对比环境的一种依据。粒度直接影响沉积岩与沉积物的物理性能,如可塑性、烧结性、孔隙性及渗透性。因此,粒度分析在区分沉积环境、判定物质输运方式、判别水动力条件和分析粒径趋势等方面具有重要作用。文章主要介绍粒度的定义与粒度标准,总结粒径测试技术方法及粒度特征描述的方法,评述粒度分析在区分沉积环境、判定物质输运方式和判别水动力条件等方面的应用。随着计算机技术的快速发展,粒度分析测试技术正朝向自动化和测试内容多样化方向发展,其在实践中的应用也将更加多样化。Grain size is one of main characteristics of the deposit and sedimentary rock, it may be as a quantitative data about the deposit and the classification of sedimentary rock, it reflects the hydromechanics nature of deposition and also can be as one kind of basis in anglicizing and the contrasting environment ; Grain size also can affect the physical property of the sedimentary rock and the deposit, such as plasticity, sintering character, porosity and osmosis permeability, therefore grain size analysis is very important to differentiate sedimentary environment ,determinate the ways of sediments transporting ,estimate hydrodynamic conditions and to analyze grain size trends. This article introduced mainly definition and the standard of grain size, summarize the methods of the grain size test technology and the granularity characteristic description, point out some applications of grain sizing analysis in differentiating sedimentary environment, determinating the ways of sediments transporting and estimating hydrodynamic conditions. Along with fast development of computer technology, the grain size test technology will be more automatic and diversified in both operation processes and the testing contents, and will be applied more widely.

关 键 词：粒度分析 粒径 粒度特征 粒度资料 

分 类 号：P512.2[天文地球—地质学]