نتایج جستجو برای: chloritoid
تعداد نتایج: 59 فیلتر نتایج به سال:
A chloritoid schist from the Medvednica Mts. (Croatia, Zagorje-Mid-Transdanubian zone) is part of metasedimentary succession a Palaeozoic-Mesozoic Metamorphic Complex. The studied samples show mineral association chloritoid, chlorite, quartz and white mica. P-T pseudosection, combined with modal chemical isopleths, classical thermobarometric calculations yield peak metamorphic conditions 0.8 – ...
Microstructural and petrographical features as well as field relations, show that formation of the metapelitic rocks of Bolandparchin and Poshtuk in northwestern Iran was poly-metamorphic. Mineral assemblages in the metapelites of two areas are different. The Bolandparchin schists are graphite-rich and have dark color. Peak metamorphic assemblage is garnet, biotite, staurolite, aluminosilicate ...
Multiscale structural analysis is carried out to explore the sequence of superposed pre-Alpine chloritoid–staurolite–andalusite metamorphic assemblages in polydeformed Variscan basement upper Val Camonica, central Southalpine domain. The dominant fabric Camonica late-Variscan S2 foliation, marked by greenschist facies minerals and truncated base Permian siliciclastic sequences. intersection wit...
Abstract. The coexistence of chloritoid and biotite in medium-pressure Barrovian terranes is quite uncommon, the parameters controlling their equilibrium relations are still controversial. Various studies have already investigated influence pressure (P), temperature (T), bulk rock (X bulk) fluid fluid) compositions on stability this assemblage. Here we apply forward thermodynamic modelling amph...
Geysour area, east of Gonabad, is a part of the northern Lut block. The rocks in this area include granitoid and a series of metamorphic rocks. In metapelitic rocks, the presence of S1 schistosity and the mineral chloritoid are indicative of regional metamorphism. The presence of random textural evidence in minerals such as andalusite, staurolite, muscovite and post-tectonic garnet and silimani...
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