Development of a relative paleointensity curve for the American Southwest

Friday, 19 December 2014
Shelby Anne Jones, Scripps Institution of Oceanography, La Jolla, CA, United States, Lisa Tauxe, Univ California San Diego, La Jolla, CA, United States, Agnes Genevey, Université Pierre et Marie Curie, Campus le Raphaël, Laboratoire d’Archéologie Moléculaire et Structurale (LAMS), Ivry-Sur-Seine, France and Eric Blinman, New Mexico Department of Cultural Affairs, New Mexico Office of Archaeological Studies, Santa Fe, NM, United States
Paleointensity experiments were conducted using the IZZI protocol on fifty-seven baked pottery fragments collected from nine archeological sites near Santa Fe, New Mexico. Results from seventeen fragments passed our strict selection criteria and indicate that at least seven distinct age intervals may be present. Stylistic evidence, historical documentation, dendrochronology, and 14C analyses provide age constraints with up to decade resolution for the results. Continued IZZI paleointensity experiments will be conducted on the seventeen promising fragments, including anisotropy and cooling rate corrections, to ensure a robust dataset. Moreover, additional pottery fragments from the New Mexico area will be analyzed for paleointensity in hopes of combining the data sets to create a high-resolution paleointensity curve for the recent archeological time in the American Southwest.