“索引”一词从字面上看是求索、指引的意思。人们借助于索引,可以按其指引,获得隐含在文献中的知识信息。所以人们又把索引比作为揭示包含在文献中的情报信息的钥匙。《江苏地质》自1977年创刊以来,长期只为读者提供单一的年度篇名(目次)索引。到1991年该刊为增强其检索功能,在保留篇名索引的同时,又新增了年度著者索引、地名索引 The term “index” literally means what you are looking for and what you are looking for. With the help of the index, people can follow the guidelines to get the knowledge information hidden in the literature. So people again compared the index as the key to revealing the intelligence information contained in the literature. Since its publication in 1977, Jiangsu Geology has provided readers with a single annual index (index) of articles for a long period of time. By 1991, in order to enhance its search function, the journal maintained an index of articles and added an annual index of authors and place names