1. Faculty of Archaeology, Leiden University, Leiden, The Netherlands
2. Royal Netherlands Institute of Southeast Asian and Caribbean Studies, Leiden, The Netherlands
3. Guahayona Institute, San Juan, Puerto Rico
4. Centro de Investigaciones Arqueológicas, Universidad de Puerto Rico, Rio Piedras, Puerto Rico
5. Centro de Estudios Avanzados de Puerto Rico y El Caribe, San Juan, Puerto Rico
6. Division of Geology, Department of Earth and Environmental Sciences, KU Leuven, Leuven, Belgium