This report summarizes activities of the Arizona Geological Survey for Fiscal Year 1984-85, which ended June 30, 1985. The Arizona Geological Survey is the Geological Survey Branch of the Bureau of Geology and Mineral Technology. The report begins with a statement of purpose, objectives, and responsibilities excerpted from the enabling act of the Bureau of Geology and Mineral Technology (Title 27, Chapter 1, Article 4, Arizona Revised Statutes), Two major responsibilities are mandated: to do research and to provide information. Research and data collection projects, together with information, education; and service activities completed, are listed. Fiscal data, including estimated costs to perform each of the major responsibilities, are provided. We welcome questions about any aspect of our program and invite your comments.