Ultrahigh-temperature (UHT) metamorphism is the most thermally extreme type of crustal
metamorphism, with the crust capable of withstanding temperatures≥ 900° C. Mineral …

Lower crustal granulites, which constitute the base of all continents, belong to two series:
high-pressure granulites generated by crustal thickening (subduction) and (ultra) high …

In general, Archean rocks exhibit rather ordinary moderate-P-high-T facies series
metamorphism; neither blueschists nor any record of deep continental subduction and return …

Ultrahigh-temperature (UHT) crustal metamorphism is a division of medium-pressure
granulite facies metamorphism where peak temperatures of 900–1100° C have been …

Information on pressure (P) and temperature (T) is a fundamental aspect of research on
metamorphic terrains. Unfortunately, many workers employ thermobarometers that are not …

Phase relations and mineral chemistry involving the phases garnet (Gt), spinel (Sp),
hypersthene (Hy), sapphirine (Sa), cordierite (Cd), sillimanite (Sil) and quartz (Qz) have …

ABSTRACT Quartz Al–Mg granulites exposed at In Hihaou, In Ouzzal (NW Hoggar),
preserve an unusual high‐grade mineral association stable at temperatures up to 1050° C …

Abstract The Mollendo–Camana Block (MCB) is a 50× 150 km Precambrian inlier of the
Andean belt that outcrops along the Pacific coast of southern Peru. It consists of stromatic …

Two major granulitic units are recognized in the Gour Oumelalen area. One of the units is
composed partially of Archean gneisses (Red Gneiss complex) with U–Pb zircon SIMS and …

The In Ouzzal terrane (Western Hoggar) is an example of Archaean crust remobilized during
a very-high-temperature metamorphism related to the Paleoproterozoic orogeny (2 Ga). Pan …