Geochronological and geochemical constraints on the petrogenesis of high-K granite from the Suffi abad area, Sanandaj-Sirjan Zone, NW Iran

Azizi, Hossein; Asahara, Yoshihiro; Mehrabi, Behzad; Chung, Sun‐Lin

doi:10.1016/j.chemer.2011.06.005

Cited by 85 publications

(56 citation statements)

References 46 publications

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“…html) were digested according to previously reported methods with some modifications [17,24,25]. A 0.1000 g of powdered rock was weighed in a 100 mL Teflon beaker and 4.0 mL HNO 3 (65 %), 3.0 mL HClO 4 (70 %) and 5.0 mL HF (40 %) were added.…”

Section: Preparation Of Rock Samplesmentioning

confidence: 99%

Ultra-trace determination of arsenic species in environmental waters, food and biological samples using a modified aluminum oxide nanoparticle sorbent and AAS detection after multivariate optimization

2015

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We describe a simple and efficient method for solid phase extraction and speciation of trace quantities of arsenic. It is based on the use of functionalized aluminum oxide nanoparticles and does not require any oxidation or reduction steps. The experimental parameters affecting extraction and quantitation were optimized using fractional factorial design methods. Adsorbed arsenic was eluted from the sorbent with 1 M hydrochloric acid and determined by graphite furnace atomic absorption spectrometry. Preconcentration factors up to 750 were achieved depending on the sample volume. Studies on potential interferences by various anions and cations showed the method to be highly selective. Under optimum conditions, the calibration plots are linear in the 5.0 to 280 ng L −1 and 8.0 to 260 ng L −1 concentration ranges for As(III) and total arsenic, respectively. The detection limits (calculated for S/N ratios of 3) are 1.81 and 1.97 ng L −1 for As(III) and total arsenic, respectively. The method was successfully applied to the determination and speciation of arsenic in (spiked) environmental, food and biological samples and gave good recoveries. The method was validated using a certified geological reference material.

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Section: Preparation Of Rock Samplesmentioning

confidence: 99%

Ultra-trace determination of arsenic species in environmental waters, food and biological samples using a modified aluminum oxide nanoparticle sorbent and AAS detection after multivariate optimization

2015

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“…The age of the granitic rocks near the studied rocks, which intruded to sedimentary-volcanic rocks of the lower Jurassic, is estimated at 144 ± 2 to 149 ± 3 Ma by U-Pb zircon dating (Azizi et al, 2011); therefore, the studied intrusion is late Jurassic in age. The mediumto fine-grained monzogabbro-monzodiorite rocks in the eastern and northeastern margin of the pluton are generally dark gray to black in color.…”

Section: Field Characteristicsmentioning

confidence: 99%

Nature and physicochemical conditions of crystallization in the South Dehgolan intrusion, NW Iran: mineral-chemical evidence

Sarjoughian¹,

Kananian²,

Lentz³

et al. 2015

Turkish J Earth Sci

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The South Dehgolan intrusion in the Sanandaj-Sirjan Zone ranges in composition from calc-alkalic monzogabbro to syenite to alkalic granite. This suite is composed mainly of variable proportions of quartz, K-feldspar, plagioclase, biotite, hornblende, and pyroxene. The plagioclase composition varies between albite to labradorite. The biotites are Mg-to Fe-rich in the monzogabbro to granite, respectively. The amphiboles are calcic and the composition varies from magnesiohornblende to actinolite. Clinopyroxene compositions fall in the diopside-augite field. The average calculated near-solidus crystallization temperatures are 774 °C, 655 °C, and 775 °C for the monzogabbro-monzodiorite, syenite, and granite, respectively. Calculated average pressures of emplacement are 1.7, 1.3, and 1.9 kbar for the monzogabbro-monzodiorite, syenite, and granite rocks, respectively, crystallizing at different respective depths of about 6.7, 5.0, and 7.3 km. The interpreted oxygen fugacities in the monzogabbro-monzodiorite and syenite rocks are typical of arc magmas, with oxygen fugacities above the Ni-NiO buffer. Water contents in the monzogabbro-monzodiorite and syenite were calculated to range from 4.7 to 4.4 wt.% and in the granite is 3.8 wt.%. High water and volatile contents in the monzogabbro to syenite may have allowed the magma to reach shallower crustal levels. During the evolution of this magmatic system to higher silica contents, there was an increase in the activity of oxygen and decrease in the temperature and the emplacement depth from the monzogabbro-monzodiorite to syenite rocks; this is consistent with the typical evolution of the granitoid rocks. However, the calculated higher temperature and pressure and low ƒO 2 and H 2 O content in the later granite reflects notable differences in its origin and crystallization conditions. The range in mineral compositions is this intrusive suite is consistent with a relationship to subduction of the Neotethys oceanic crust beneath the Central Iranian microcontinent, although there was a change from calc-alkaline to alkaline magmatism.

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“…The radiometric ages for plutonic rocks were obtained using various methods such as K-Ar, Rb-Sr, Nd-Sm and U-Pb (e.g., Valizadeh and Cantagrel, 1975;Braud, 1987;Baharifar et al, 2004;Masoudi, 1997;Arvin et al, 2007;Ahmadi-Khaladji et al, 2007;Mazhari et al, 2009;Ghalamghash et al, 2009;Shahbazi et al, 2010;Bea et al, 2011;Ahadnejad et al, 2011;Azizi et al, 2011a;Mazhari et al, 2012;Azizi et al, 2011b;Mahmoudi et al, 2011;Alirezaei and Hassanzadeh, 2012;Esna-Ashari et al, 2012). These data indicate that extensive plutonism in the region occurred during the Mesozoic.…”

Section: Chronology Of Magmatism In the Sanandaj-sirjan Zonementioning

confidence: 99%

“…Gabbros of this pluton formed at 166.5 ± 1.8 Ma, granites between 163.9 ± 0.9 Ma and 161.7 ± 0.6 Ma, and leucogranites between 154.4 ± 1.3 and 153.3 ± 2.7 Ma (Shahbazi et al, 2010). LA-ICP-MS U-Pb zircon ages of the Suffi-abad granite range between 149 ± 2 and 144 ± 3 Ma (Azizi et al, 2011b). A third group of plutons is characterized by Paleogene ages.…”

Section: U-pb Age Datamentioning

confidence: 99%

Geochronology of plutonic rocks from the Sanandaj-Sirjan zone, Iran and new zircon and titanite U-Th-Pb ages for granitoids from the Marivan pluton

et al. 2014

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Abstract:The Sanandaj-Sirjan zone of Iran is a metamorphic belt consisting of rocks which were metamorphosed under different pressure and temperature conditions and intruded by various plutons ranging in composition from gabbro to granite. The majority of these granitoids formed along the ancient active continental margin of the Neo-Tethyan ocean at the southeastern edge of the central Iranian microplate. Geochronological data published in recent years indicate periodic plutonism lasting from Carboniferous through Mesozoic to late-Paleogene times (from ca. 300 to ca. 35 Ma) with climax activity during the mid-and late-Jurassic. The age constraints for plutonic complexes, such as Siah-Kouh, Kolah-Ghazi, Golpayegan (Muteh), Azna, Aligoodarz, Astaneh, Borujerd, Malayer (Samen), Alvand, Almogholagh, Ghorveh, Saqqez, Marivan, Naqadeh and Urumieh, clearly indicate the periodic nature of magmatism. Therefore, the Sanandaj-Sirjan zone preserves the record of magmatic activity of a complete orogenic cycle related to (1) Permocarboniferous(?) rifting of Gondwana and opening of the Neo-Tethyan ocean, (2) subduction of the oceanic crust, (3) continental collision and (4) post-collision/post-orogenic activities. The formation of the Marivan granitoids, northwestern Sanandaj-Sirjan zone, for which we present U-Pb zircon and titanite ages of ca. 38 Ma, can be related to the collisional and post-collisional stages of this orogenic cycle.

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Geochronological and geochemical constraints on the petrogenesis of high-K granite from the Suffi abad area, Sanandaj-Sirjan Zone, NW Iran

Cited by 85 publications

References 46 publications

Ultra-trace determination of arsenic species in environmental waters, food and biological samples using a modified aluminum oxide nanoparticle sorbent and AAS detection after multivariate optimization

Ultra-trace determination of arsenic species in environmental waters, food and biological samples using a modified aluminum oxide nanoparticle sorbent and AAS detection after multivariate optimization

Nature and physicochemical conditions of crystallization in the South Dehgolan intrusion, NW Iran: mineral-chemical evidence

Geochronology of plutonic rocks from the Sanandaj-Sirjan zone, Iran and new zircon and titanite U-Th-Pb ages for granitoids from the Marivan pluton

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