1. Instituto de Geografía Pontificia Universidad Católica de Valparaíso Valparaíso Chile
2. Programa de Doctorado en Ciencias Geológicas Facultad de Ciencias Químicas Universidad de Concepción Concepción Chile
3. Pacific Geoscience Centre Geological Survey of Canada Sidney BC Canada
4. School of Earth and Ocean Sciences University of Victoria Victoria BC Canada
5. Now at Department of Earth and Planetary Sciences McGill University Montréal QC Canada