Petrotectonic summary of less intensively studied UHP regions

This paper summaries tectonic settings and mineral parageneses of several r ecognized ultrahigh-pressure (UHP) terranes other than the well-studied Kok chetav Massif of northern Kazakhstan, the Western Gneiss Region of Norway, the Dora-Maira massif of the Western Alps, and the Dabie-Sulu terrane of ea st-central China. Diamond-bearing terranes include the Beni Bousera/Ronda p eridotite massif, the Erzgebirge Crystalline Complex, mantle peridotite fro m a Tibetan ophiolite, and possibly the Maksyutov Complex. Coesite-bearing UHP terranes are the Zermatt-Saas area, Western Alps; the Mail eclogites fr om West Africa; the Makabal complex of western Tien Shan; the Bohemian mass if; and the newly reported Central Indonesia terrane and Himalayan eclogite s from the upper Kaghan Valley of Pakistan. Except for the diamond-bearing Tibetan ophiolite, most UHP terranes share similar petrotectonic assemblage s and lie within major continental collision belts in Eurasia and Africa. U sing new approaches (including new geobarometers) and technologies, additio nal UHP terranes are expected to be recognized in other Phanenorozic orogen ic sutures.