Uranium concentrations from an aragonite speleothem as a proxy for Mesoamerican Monsoon Variability over the last 2,250 years

Chad Crotty1, Matthew S Lachniet2, Yemane Asmerom3, Victor J Polyak3 and J P Bernal4, (1)University of Nevada Las Vegas, Las Vegas, NV, United States, (2)University of Nevada Las Vegas, Department of Geoscience, Las Vegas, NV, United States, (3)University of New Mexico, Department of Earth and Planetary Sciences, Albuquerque, United States, (4)Universidad Nacional Autonoma de Mexico, Centro de Geociencias, Mexico City, Mexico