Rare eclogite-mafic granulite in felsic granulite in Blanský les: Precursor of intermediate granulite in the Bohemian Massif?

Abstract

Mafic granulite, generated from eclogite, occurs in felsic granulite at Kleť, Blanský les, in the Bohemian Massif. This is significant because such eclogite is very rare within the felsic granulite massifs. Moreover, at this locality, strong interaction has occurred between the mafic granulite and the adjacent felsic granulite producing intermediate granulite, such intermediate granulite being of enigmatic origin elsewhere. The mafic granulite involves garnet from the original eclogite, containing large idiomorphic inclusions of omphacite, plagioclase and quartz, as well as rutile. The edge of the garnet is replaced by a plagioclase corona, with the garnet zoned towards the corona and also t..