论文部分内容阅读
序言 用旋转台相电子探针对曼尼托巴州埃耳博湖(Elbow Lake)一个小石英闪长岩岩株中大量环带状斜长石晶体做了详细研究,本文是介绍这些详细研究结果的两三篇连续文章的第一篇。这次研究的目的首先是比较用光学方法和电子探针获得的许多各别环带的化学成分;其次是根据光学观察所得的环带构造和双晶特征以及根据电子探针的结果,试图得出该岩株的成因认识。
INTRODUCTION A large number of ring-shaped plagioclase crystals in a small quartz diorite from the Elbow Lake, Manitoba, have been studied in detail using rotary phase-phase electron microprobe. This article describes these detailed studies The first of two or three consecutive articles of the result. The purpose of this study was first to compare the chemical composition of many individual annuli obtained with optical methods and electron probes; secondly, based on the optically observed ring structure and bi-crystalline features and on the results of the electron probe The origin of the rock strain understanding.