Preface • Yucca Mountain, Nevada—A proposed geologic repository for high-level radioactive waste, Robert A. Levich and John S. Stuckless • Geology of the Yucca Mountain region, John S. Stuckless and Dennis W. O’Leary • Geology of the Yucca Mountain site area, southwestern Nevada, William R. Keefer, John W. Whitney, and David C. Buesch • Tectonic models for Yucca Mountain, Nevada, Dennis W. O’Leary • Using modern through mid-Pleistocene climate proxy data to bound future variations in infiltration at Yucca Mountain, Nevada, Saxon E. Sharpe