论文部分内容阅读
通常,人们一般善于使用锆石对比法,进行变质岩的原岩恢复工作,也有用此法来对比火成岩的侵入时代,然而,在自然界中由于各种因素的综合影响,锆石的晶形会发生变化,这就给对比研究带来了一定的困难。笔者依据河北省康保幅(1/20万)区测人工重砂及其它地质资料,对该区的岩石学、矿物学、地球化学、变质相等进行了一些
Generally, people are generally good at using the zircon contrast method to perform the original rock restoration work of the metamorphic rocks. This method can also be used to compare the age of the igneous intrusion, however, the crystal form of zircon will occur due to the comprehensive influence of various factors in nature Change, which gives comparative research has brought some difficulties. Based on the heavy sand and other geological data measured by Kangbao amplitude (1 / 200,000) in Hebei Province, the authors carried out some studies on petrology, mineralogy, geochemistry and metamorphism in the area