Origin of layered continental mantle (Karelian craton, Finland) : geochemical and Re Os isotope constraints

P. Peltonen & Gerhard Brügmann
Studies of mantle xenolith and xenocryst studies have indicated that the subcontinental lithospheric mantle (SCLM) at the Karelian Craton margin (Fennoscandian Shield) is stratified into at least three distinct layers cited A, B, and C. The origin and age of this layering has, however, remained unconstrained. In order to address this question, we have determined Re-Os isotope composition and a comprehensive set of major and trace elements, from xenoliths representing all these three layers. These...
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