Petrogenesis of subvolcanic rocks from the Khunik prospecting area, south of Birjand, Iran: Geochemical, Sr–Nd isotopic and U–Pb zircon constraints

Samiee, Somayeh; Karimpour, Mohammad Hassan; Ghaderi, Majid; Shahri, Mohammad Reza Haidarian; Klötzli, Urs; Santos, J. F.

doi:10.1016/j.jseaes.2015.09.023

Cited by 16 publications

(13 citation statements)

References 38 publications

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“…Zircon 206 Pb/ 238 U and 207 Pb/ 206 Pb ages were defined using a 193-nm solid-state Nd-YAG laser (NewWave UP193-SS) coupled to a multicollector ICP-MS (Nu Instruments HR) at the University of Vienna (Table 2). The analytical procedures are identical to those explained for zircon U-Pb analysis in a previous article (Samiee et al, 2016).…”

Section: Zircon U-pb Datingmentioning

confidence: 99%

Zircon U-Pb geochronology, geochemistry, Sr-Nd isotopic compositions, and tectonomagmatic implications of Nay (NE Iran) postcollisional intrusives in the Sabzevar zone

Almasi¹,

Karimpour²,

Arjmandzadeh³

et al. 2019

Turkish J Earth Sci

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Section: Zircon U-pb Datingmentioning

confidence: 99%

Zircon U-Pb geochronology, geochemistry, Sr-Nd isotopic compositions, and tectonomagmatic implications of Nay (NE Iran) postcollisional intrusives in the Sabzevar zone

Almasi¹,

Karimpour²,

Arjmandzadeh³

et al. 2019

Turkish J Earth Sci

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“…More than 100 zircon grains of the dacite sample and about 50 zircon grains from the gabbro sample were selected for LA-ICP-MS U-Pb zircon dating that provided 30 and 34 data points, with the weighted mean age being 36.9 ± 1.0 Ma (errors shown are 2ϭ) for gabbro zircons and 38.6 ± 0.5 Ma (errors shown are 2ϭ) for dacite zircons, respectively ( Table 1). The dating of intrusive rocks in different parts of the Kuh-e-Shah complex (Malekzadeh Shafaroudi, 2009, Abdi andKarimpour, 2013;and Samiee et al, 2016) shows an age range of 31 to 39.7 Ma ( Table 2).…”

Section: U-pb Zircon Geochronologymentioning

confidence: 99%

U-Pb zircon geochronology, geochemistry, and petrogenesis of the Hamech intrusions in the Kuh-e-Shah volcano-plutonic complex, Eastern Iran

Etemadi¹,

Karimpour²,

Shafaroudi³

et al. 2018

Turkish J Earth Sci

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Introduction The tectonic unit of eastern Iran, namely the Lut Block and the Flysch Zone, represent a complex tectonic history related to the evolution of the Sistan Ocean. The Lut Block, as the main body of eastern Iran, confined by faults, extends for about 900 km in the N-S direction (Stocklin and Nabavi, 1973) and only 200 km wide in the E-W direction. The Lut Block is composed of volcanic, volcaniclastic, subvolcanic, and intrusive rocks. The geological history of the Lut Block is characterized by magmatic activities from Middle Jurassic (the S-type Shah-Kuh granitoids; 165-162 Ma) to Cenozoic oceanic island basalts (15.5-1.74 Ma); thus, igneous rocks cover over half of this zone with up to 2000-m thickness (Karimpour et al., 2011). Meanwhile, Tertiary period (42-33 Ma) has a special importance in terms of magmatism and mineralization (Karimpour et al.

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“…There are many Mining activities around South Khorasan province, eastern Iran. Various types of metallic mineralization are identi ed, e.g., Qaleh Zari IOCG Deposit, Maherabad Cu-Au porphyry, Sheikhabad high-sul dation, Hanich low sul dation, and Khunik epithermal gold deposits (Samiee et al 2016). Possibly, some areas might be impacted by trace elements from anthropogenic origins.…”

Section: Introductionmentioning

confidence: 99%

Evaluating a Sediments Pollution Using Contamination Indices and Risk Assessment in Mineralized Zones, Eastern Iran

Saadat

2022

Preprint

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In this study, the results of nearly 1400 stream sediment sample analysis were processed to better understand environmental pollution caused by mining activities. Stream sediment samples were analyzed for As, Sb, Fe, Cr, Ni, Co, Cu, Zn, Pb, Sr, and Hg. The mean concentration of these elements followed the decreasing order of Fe > Sr > Zn > Cr > Cu > Ni > Co > Pb > As > Sb > Hg. Based on the assessment of pollution, extremely severe enrichment factor Co (EF > 25) and high enrichment of Sb, Hg, Cr, and Sr (EF > 10) were detected. Specifically, Cr and Ni in southern stream sediments showed significantly elevated concentrations compared to the others. The range of the contamination factor varied from CF < 1 to CF > 6 for most elements. Geo-accumulation index showed high contamination levels by Cr and Co and high to severe contamination by Sb. The risk indices were low for all elements except for As and Co in the eastern part of the study area. Principal component analysis, Pearson’s correlation coefficient and cluster analysis were used to demonstrate similarities and differences between the elements. Pollution indices showed that contaminations in some samples are the consequence of gold mineralization. The high correlation of Cu, Zn, and Sb is due to the sulfide mineralization of gold. The high correlation of Cr and Ni corresponds to ultramafic rocks and ophiolitic series. Based on the results presented here, while most contamination in the target area is rooted in geochemical and mineralization processes, mining activity also contributes to soil pollution for certain elements such as Cu and Zn.

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Petrogenesis of subvolcanic rocks from the Khunik prospecting area, south of Birjand, Iran: Geochemical, Sr–Nd isotopic and U–Pb zircon constraints

Cited by 16 publications

References 38 publications

Zircon U-Pb geochronology, geochemistry, Sr-Nd isotopic compositions, and tectonomagmatic implications of Nay (NE Iran) postcollisional intrusives in the Sabzevar zone

Zircon U-Pb geochronology, geochemistry, Sr-Nd isotopic compositions, and tectonomagmatic implications of Nay (NE Iran) postcollisional intrusives in the Sabzevar zone

U-Pb zircon geochronology, geochemistry, and petrogenesis of the Hamech intrusions in the Kuh-e-Shah volcano-plutonic complex, Eastern Iran

Evaluating a Sediments Pollution Using Contamination Indices and Risk Assessment in Mineralized Zones, Eastern Iran

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