1. Geological Institute; Swiss Federal Institute of Technology (ETH - Zürich); LEB, Leonhaedstrasse 19; CH8092; Zurich; Switzerland
2. Geological Institute; Swiss Federal Institute of Technology (ETH - Zürich); Sonneggstrasse 5; CH8092; Zurich; Switzerland
3. Department of Geology and Geophysics; University of Minnesota; Minneapolis; Minnesota; 55455-0219; USA
4. Department of Geology; Oberlin College; Oberlin; Ohio; 44074; USA