Ó 2012Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim Article No : a21_075 Platinum Group Metals and Compounds HERMANN RENNER,DegussaAG,(retired),Hanau,FederalRepublicofGermany…
1. PLATE TECTONICS: A UNIFYING THEORY Geology The Walker School 2. Earth’s crust is about 5% of it’s mass. 3. Oceanic Crust 5 to 8 km thick.Composed mainly of basalt…