各有关地质工作單位的同志們: 为了适应大跃进的需要,为祖国找出更多更大的有用矿产,其中很重要的一个方面就是需要把我国各地区主要的岩漿活动时代了解清楚。为此,中国科学院地質研究所岩石矿床研究室承担接受测定岩石絕对年龄标本的任务。按中苏合作项目的規定,1958年我所可送交苏方鑑定样品。我們预备在本年10月以 Comrades of various geologic units concerned: In order to meet the needs of the Great Leap Forward and find more and larger useful minerals for the motherland, a very important aspect of this is the need to understand clearly the major magmatism times in various regions of our country. To this end, the Institute of Geology, Chinese Academy of Sciences Institute of rock deposits bear the task of receiving the absolute rock age of the specimen specimen. According to the stipulations of the Sino-Soviet cooperation project, in 1958 I was allowed to send samples to the Soviet Union for identification. We are going to start this October