Study of Geobarometers in Pelitic Schists from The Pütürge Metamorphites

World Multidisciplinary Earth Sciences Symposium 2016

Güngör, Filiz^1

Firat University Geology, Department Elazi, Turkey^1

关键词: Aluminum silicates;    High pressure;    Metamorphic conditions;    Metamorphic events;    Metapelites;    Mica schists;    Pressure-temperature conditions;    Temperature and pressures;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/44/4/042010/pdf
DOI  :  10.1088/1755-1315/44/4/042010

来源: IOP

【 摘 要 】

Pelitic schists from The Pütürge metamorphites contain important minerals, such as garnet, biotite, chlorite, kyanite, and staurolite which are used in the determination of degree of metamorphism. Kyanite in metapelites such as staurolite mica schist, stavrolite garnet mica schist, biotite schist and amphibole schist. Kyanite is one from AESiO5 polymorphs (andalusite, sillimanite and kyanite). Kyanite is approximately ten percent more dense than the other two, and hence formation of kyanite is favoured by high pressures. The metamorphic petrology uses pressure-temperature conditions during metamorphic events and fluids in metamorphic environment. The geobarometers were used to estimate metamorphic conditions of pelitic schistes in metamorphites. The study of garnet-aluminum silicate-plagioclase-quartz (GASP) barometry has a long history. Compositions of staurolite and garnet in the assemblage in samples were calculated from temperature and pressure changes. The calculated temperatures could be due to conditions of Ph2o