This cartobibliography lists more than 4,900 maps, covering some 320 geographic areas, that were published in selected earth science journals between 1981 and 1982 and in selected monographs between 1963 and 1983. A diversity of geological topics are covered in this index, spanning such subjects as coastal geomorphology, plate tectonics, mineralization zones, and location of fossil fauna. The Index is divided into three major sections. Part I lists maps geographically; the maps are organized alphabetically by title under their subject term. Part II is a listing of sources in which the maps are located. An author index constitutes Part III. Directions for use and a list of geographic subject terms that can be used to access the maps are also included.