1. Group Dynamics of the Lithosphere; Institute of Earth Sciences “J. Almera”, CSIC; Luís Solé i Sabarís s/n,; E-08028; Barcelona; Spain
2. Department of Earth Sciences and Ottawa-Carleton Geoscience Centre; Carleton University; 1125 Colonel By Drive,; Ottawa; Canada; K1S 5B6
3. GEMOC ARC Key Centre for Geochemical Evolution and Metallogeny of Continents, Department of Earth and Planetary Sciences; Macquarie University; Sydney; NSW 2109; Australia
4. Earth Sciences Department; Swiss Federal Institute of Technology; Soneggstr. 5,; CH-8092; Zurich; Switzerland