Khezr-Abad pluton is cropped out in North-West of Taft. This granitoid seems to be younger than the surrounding metamorphosed rocks, particularly the lower cretaceous limestones and probably is implaced during Oligo-Miocene. The most volumetric abundances of the igneous rocks are: granodiorite, granite, quartzmonzo-diorite, quartz-diorite, and in a lesser amount tonalite, quartz-syenite and ...

Abstract This study describes mineralogical and crystallochemical characteristics of metamorphic tourmalines from an Alpine shear zone in a Variscan rock sequence the Maramures region northern part East Carpathians. We use this mineral to unravel aspects evolution tourmaline bearing host rocks compare crystallo-chemical other Alps. Petrographic microstructural observations, as well electron mic...

Abstract A sill covering an area of more than 15 km 2 , several dykes up to 5 m thick and a volcanoclastic deposit crop out with similar petrology in the sector Atienza (NW Iberian Chain, Spain). They consist calc-alkaline porphyritic andesites phenocrysts plagioclase, amphibole, biotite, garnet orthopyroxene. Based on U–Pb zircon analysis, age 290 ± 3 Ma (Sakmarian-Artinskian Cisuralian) has b...

Abstract Elastic geothermobarometry relies on the contrast between thermal expansion and compressibility of a mineral inclusion its surrounding host, leading to residual pressure in ( P inc ) that may differ significantly from external pressure. Quartz-in-garnet (QuiG) inclusion-host systems are widely used elastic estimate entrapment conditions thus rock petrogenesis. To elucidate behaviour Qu...

Bulk metamorphic reaction rates have been measured using Sr isotopes as tracers of reactive transport processes at a field site near Simplon Pass, Switzerland, employing the technique described in Part I of this study (Baxter and DePaolo, 2002a). The reaction rate, R, inferred, similar to the value first reported in Baxter and DePaolo (2000), is 1.4 0.4 1.1 10 7 yr 1 (or R 7.0 2.0 5.5 10 9 g/cm...

The Madurai block, the largest crustal block in Precambrian Southern Granulite Terrane of south India, preserves rare assemblages high- to ultrahigh-temperature metamorphic rocks. These rocks bear exclusive evidence for high thermal regime prevalent during their formation and can be constrained from accessory phases such as zircon, monazite garnet. Here, we present P-T-t evolutionary history ga...