序言 1950年春,作者与叶连俊、秦鼐、刘鸿允等同志参加了东北地质矿产的调查工作,于辽东(今改辽宁)临江大栗子区见到发育较良好的接触变质现象。同年秋,曾对该区岩石比较系统地切制了薄片,并粗略地作了初步鉴定,因而使作者对该区接触变 Preface In the spring of 1950, the authors joined with Ye Lianjun, Qin Kui and Liu Hongyun in the investigation of geology and mineral resources in northeast China. They saw better development of contact metamorphism in Liaotong Dachangzi District in Liaoning Province (now Liaoning Province). In the autumn of the same year, a relatively systematic slice of the rock in the area was made and a preliminary identification was made roughly. As a result,