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Mantled Gneiss Domes

The term mantled gneiss dome was first used by Professor Pentti Eskola (1949) in his discussion of the domes of the Karelian Province of eastern Finland, although structures of this type had previously been described by a number of workers (e.g., Hitchcock, 1877; Trustedt, 1907) and the similar term mantled diapir had been coined by Wegmann (1930). The origin of gneiss domes is reviewed by Brun (1983).

Gneiss domes are characteristic of the core zones of orogenic belts the world over; other wellknown examples include the so-called Oliverian domes of the Appalachian Orogen of New England (United States) (Chapman, 1939, 1942; Billings, 1945; Thompson et al., 1968; see Figs. 1 and 2); the Rum Jungle and Waterhouse domes of the Pine Creek Geosyncline, northern Australia (Sullivan and Matheson, 1952; Rhodes, 1965; Stephansson and Johnson, 1976); the domes of the Albion Range, Idaho (Armstrong, 1968); the spectacular mushroom-shaped structures exposed in the fjords of