نتایج جستجو برای: metapelite
تعداد نتایج: 54 فیلتر نتایج به سال:
In orogens, pinpointing the timing of mineralization is often complex due to superimposition magmatic, metamorphic and tectonic events. Unravelling tectono-metamorphic evolution deformed terranes essential for understanding formation orogenic mineralization. Bossòst dome Pyrenean Axial Zone, undated stratabound Pb-Zn previously considered be SEDEX-like devoid evidence significant remobilization...
Gasht metamorphic complex is situated in the Talesh mountains of western Alborz range. This metamorphic complex consists mainly of metapelite and metabasite. Metabasites display metamorphic conditions of amphibolite and greenschist facies. Mineralogical paragenesis of greenschists are amphibole, feldspar and epidot and clinopyroxene occures as accessory minerals. The amphibolites of Gasht metam...
Misho granitoid pluton is exposed at the North Western part of the Misho Mountains and at the South Western part of the Marand compresional depression. The minerals in the rocks of this pluton include unhedral to sub – hedral quartz, K – feldspar both as microcline with tartan twinning and sub - hedral to unhedral orthoclase, two generations of biotite and zircon, subhedral to euhedral plagioc...
The Gol-Gohar metamorphic complex, a part of east Sanandaj-Sirjan zone, is located 55 km southwest of Sirjan. This complex consists of metapelitic, metapsammitic and metacarbonatic rocks. Field and geochemical evidence indicate that these sedimentary protolith sequences were composed of shale and sandstone alternation with carbonate layers in the upper parts. In the studied metapelites, garnets...
The Gol-Gohar metamorphic complex, a part of east Sanandaj-Sirjan zone, is located 55 km southwest of Sirjan. This complex consists of metapelitic, metapsammitic, and metacarbonatic rocks. Field and geochemical evidences indicate that these sedimentary protolith sequences are composed of shale and sandstone with alternation of carbonate layers in the upper parts. In the studied metapelites, gar...
Thallium (Tl) is a highly incompatible element which can be redistributed during various igneous and hydrothermal events such as mineral dehydration low-temperature alteration. Despite the strong influence fluid-rock interactions have on Tl redistribution importance of fluids in subduction-zone volatiles cycling, geochemical behavior high-P/T metamorphism has not yet been quantified. Here we pr...
The Western Domain of the Magallanes Fold-and-Thrust Belt (MFTB) between 52°-54°S is part a poorly studied hinterland region southernmost Andean Cordillera. This domain consists NNW-SSE trending tectonic slices pre-Jurassic basement units and Upper Jurassic-Lower Cretaceous ophiolitic complexes volcano-sedimentary successions Rocas Verdes Basin (RVB). New detrital zircon U–Pb ages metatuffs met...
The Ti-in-zircon geothermometer [1,2] can constrain growth and/or re-equilibration temperatures of zircons and is particularly useful for constraining Archean and Hadean events where detrital zircon is the only surviving mineral. Zircons are often small (ca. <100 μm in the long dimension) and preserve evidence of fine-scale (sub-micron) compositional zonation. Methods for determining Ti adbunda...
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