نتایج جستجو برای: chloritoid
تعداد نتایج: 59 فیلتر نتایج به سال:
Phase diagrams of hydrous mid-ocean ridge (MOR) basalts to 330 km depth and of hydrous peridotites to 250 km depth are compiled for conditions characteristic for subduction zones. A synthesis of our experimentally determined phase relations of chlorite, lawsonite, epidote-zoisite, amphibole, paragonite, chloritoid, talc, and phengite in basalts and of phase relations from the literature of serp...
The tectono-metamorphic evolution of the European Alps is still contentious. Monte Rosa tectonic unit a prominent nappe in Central and estimates its peak Alpine pressure (P) temperature (T) conditions are essential for reconstructing evolution. However, reported vary considerably between 1.2 2.7 GPa 490 640°C variety lithologies. Here, we show petrology pseudosection modelling metapelitic assem...
The Heydarabad bauxite-laterite deposit is located in 63 km southeast of Urmia city. This ore deposit occurs as a concordant layer within the boundaries of Upper Permian and Lower Triassic carbonate units (limestone and dolomite), although it has been suffered some tectonic displacements along its direction. The studied horizon varies from 15-20 m in thickness and has an east-west trend with a ...
Dating low-grade metamorphism is challenging since such rocks commonly lack suitable target minerals for acquiring pressure–temperature–time–deformation (P–T–t–d) data. Herein a new geochronological method termed ‘bulk inclusion dating’ applied to chloritoid-bearing schist from the Staufen-Höllengebirge Nappe (SHN, Austroalpine Unit, Eastern Alps, Austria) which Cretaceous imprecisely constrain...
Metapelites of the Do Chah complex (SE Shahrood) are composed of micaschist, garnet micaschist, chloritoid schist and garnet-bearing gneiss. In the highest degree of metamorphism, metapelites have been affected by partial melting, resulting as granitization. A significant part of these rocks, imposed by compressional tectonic regime and show typical evidence of plastic deformation and intensive...
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