High-Pressure Tourmaline Formation and Fluid Activity in Fe^Ti-rich Eclogites from the Kreuzeck Mountains, Eastern Alps, Austria

A tourmaline-bearing eclogite from the Kreuzeck Mountains, Eastern Austria, is described in this study as part of an eclogite suite situated SE of theTauern Window.These rocks formed during Eoalpine high-P metamorphism of the Austroalpine basement. They have high and variable Fe, Ti, P, Zr and Sr contents and unlike other Eoalpine eclogites their Ti^V^Zr^P^Nb^Y systematics indicates a within-plate rather than mid-ocean ridge basalt type environment for the formation of their protoliths. Major and trace element variations are consistent with progressive differentiation of a mafic magma with Fe^Ti oxide and apatite as important igneous phases and with metasomatic addition of K and Sr. The eclogites