Insights on crustal growth from detrital zircons in ancient glacial deposits

Richard M Gaschnig, University of Massachusetts Lowell, Lowell, MA, United States, Roberta L Rudnick, University of California, Earth Science, Santa Barbara, United States, William F McDonough, Tohoku University, Advance Institute for Marine Ecosystem Change, Sendai, Japan, Alan Jay Kaufman, University of Maryland, College Park, United States, Jeffrey D. Vervoort, Washington State University, School of the Environment, Pullman, United States and Christopher M Fisher, Washington State University, Pullman, WA, United States