1. College of Earth, Ocean, and Atmospheric Sciences; Oregon State University; Corvallis Oregon USA
2. Department of Geological Sciences; San Diego State University; San Diego California USA
3. Domaines Océaniques; Institut Universitaire Européen de la Mer; Place Nicolas Copernic; Plouzané France
4. Laboratoire de Géologie de Lyon; Ecole Normale Supérieure de Lyon and Université Claude Bernard Lyon 1; CNRS UMR 5276 Lyon France