This volume 'Use ofMicrocomputers in Geology' is the sixth in the series Computer Applications in the Earth Sciences published by Plenum Press in New York. The series was started in 1969 to publish proceedings of important meetings on geomathematics and computer applications. The first two volumes recorded proceedings of the Colloquia (1969,1970) sponsored by the Kansas Geological Survey at The University ofKansas in Lawrence. The third volume was proceedings of the 8th International Sedimentological Congress (1971) held in Heidelberg, West Germany; the fourth was preceedings of the 8th Geochautauqua (1979) at Syracuse Universityin Syracuse, New York; and the fifth was selected papers from the 27th International Geological Congress (1989) held in Washington, D.C. All meetings were cosponsored by the International Association for Mathematical Geology. These special publications are important in the development of quantitative geology. Papers by a wide range of authors on a wide range of topics gives the reader a flavor for recent advances in the subject -in this volume, those advances in the use ofmicrocomputers. The 24 authors of the 15 papers come from nine countries -Australia, Austria, Canada, France, Italy, Portugal, Switzerland, UK, and USA. My coeditor, Hans Kürzl, has given pertinent information on the included papers in the Introduction.