摘要
简要地介绍了估算岩石体积变化的５种方法：在可能求得岩石有限应变椭球体真实大小的情况下计算岩石体变的方法；在平面应变状态下求岩石体变的方法，非平面应变状态下岩石体变的估算方法；利用岩石中有关元素的含量变化求岩石体变的方法；利用岩石中有关矿物的含量变化求岩石体变的方法。并对这些估算方法的运用条件及误差产生的原因进行了分析。
This paper introduces and perfects five methods for rock volume change estimation:if the axial rstio of finite strain ellipsoid a:b:c and longitudinal strsin of anyone direction with its direction cosines l,m and n is known,then estimate the volume change;under plane strain,method to estimate volume change;under non-plane strain.the method to estimate volume changes; if the difference in the total percentage of all the least mobile elements in and out of deformed/metamorphosed area of a layer is knowon the volume change may be estimated;if the difference in the total percentage of all insoluble minerals in and out of deformed/metamorphosed area of a layer is known the volume change is also may be estimated. Finally,the paper discusses the conditions under which the above methods are applid and the sources of inaccuracy.
出处
《地质科技情报》
CAS
CSCD
北大核心
1994年第1期107-112,共6页
Geological Science and Technology Information
关键词
岩石
变形
变质
体积变化
估算法
volume change
deformation/metamorphism,pressure solution,finite strain ellipsoid,plane strain
