
第29卷
第3期
2015年6月
现代地质 GEOSCIENCE
在CorelDRAW平台上进行Fry法
有限应变测量的新技术
韩阳光,颜丹平,李政林
(中国地质大学(北京)地球科学与资源学院,北京
100083)
VoL 29
No. 3 Jun 2015
摘要:有限应变测量是韧性变形定量估算的主要手段。Fry法有限应变测量以变形颗粒,如变形砾石、领粒、近等轴矿物等为应变标志体,地质实践中较容易获得,是岩石有限应变测量的最普遍手段。其传统测量过程极为繁琐,难以满足大范围应变测量的要求,数据精度也较低,限制了Fry法的应用。前人曾根据Fry法原理设计了计算机程序,但其程序相关编程语言如今已基本不能使用。本研究基于目前地质上较普避使用的制图软件CorelDRAW平台的VBA编程,设计出一个基于CorelDRAW率台的Fry法应变测量宏程序FRY-1。在新图层上将所有变形颗粒的中心点标出后,运行 FRY-1宏程序即可快速得到精确的Fry图解,并计算出相对精确的R值。通过实例与"最邻近心对心法"的测量结果进
行的对比,证明该方法简便易操作,并可大幅提高有限应变测量的效率和有效减小误差。关键调:Fry法;有限应变测量;CorelDRAW;VBA;计算机制图;显微构造
中图分类号:P54
文献标志码:A
文章编号:10008527(2015)030494~07
A New Solution for Finite Strain Measurement by Fry Method
intheCorelDRAWPlatform
HAN Yang-guang, YAN Dan-ping, LI Zheng-lin
(School of Earth Sciences and Resources, China Unisersity of Geosciences, Bejing 100083, China)
eaoeeee using deformed grains such as deformed gravels, oolites and rounded or sub-rounded crystals which can be easi-ly identified in the field and labs as strain markers, is a commonly used means of finite strain measurement. The traditional process of this method is notoriously time-consuming, which prevents it from widely-using. Associat-ed computer programs have been designed previously, but the related machine languages are already out of date. CorelDRAW is a widely-used drawing software, the updated version of which provides VBA for designing Macro-programs. This paper reports a macro-program on CorelDRAW platform, the Program FRY 1, for finite strain measurement of Fry method. This program will help us to rapidly obtain the value of R ( long/short axes ratio) and the direction of the longer axle of strain ellipsoid with much higher precision. The efficiency and ac-curacy of this method are testified by comparing the result with that by the “neighbor center-to-center " method. Key words: Fry method; finite strain measurement; CorelDRAW; VBA; computer cartography; microstruc-ture
收稿日期:2014-11-25;改回日期:2015-01-23;责任编辑:楼亚儿。
基金项目:国家自然科学基金项目(41372212);国家*973"计划课题(2014CB440903);高等学校博士学科点专项科研基金项目
(2012 0022110013)。
作者简介:韩阳光,男,硕士研究生,1990年出生,构造地质学专业,主要从事构造地质学研究。Email;hamberg@163.com。通信作者:额丹平,男,教授,博士生导师,1963年出生,构造地质学专业,长期从事构造地重学的教学与研究工作。
Email: yandp@ eugh. edu. cn.