1. A HOLOCENE CLIMATIC RECORD FOR THE SONORAN DESERT OWEN K. DAVIS 1 and DAVID S. SHAFER 2 1 Department of Geosciences, University of Arizona, Tucson, Arizona 85721 2 U.S. Department of Energy, 1000 Independence Ave. SW, Washington D.C. 20585

2. Hypotheses Human impact is greater than climatic impact in the Southwest Middle Holocene climate was wetter than today in the Southwest Global climatic events are not recorded in the Montezuma Well record

3. Methods Sediment core collection Sediment processing Radiocarbon dates and age model Pollen analysis Climate reconstruction (modern analogs)

4. Results The pollen diagram Human impact was less than climatic Middle Holocene climate was dry The 8200-year global climatic events is clearly recorded at Montezuma Well

5. Suggestions for Future Research Need more environmental records from near major archeological sites Develop network of Mogollon and sub- Mogollon Holocene records Need more high-resolution late-Glacial environmental records.