Sr–Nd isotope geochemistry and tectonomagmatic setting of the Dehsalm Cu–Mo porphyry mineralizing intrusives from Lut Block, eastern Iran

Arjmandzadeh, Reza; Santos, J. F.

doi:10.1007/s00531-013-0959-4

Cited by 41 publications

(16 citation statements)

References 80 publications

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“…The measured 143 Nd/ 144 Nd values are higher than that of the present chondritic uniform reservoir (0.512638). Considering the small variation in εNd, (Zindler and Hart 1986), location of samples in lithospheric mantle array; (B) εNd vs. εSr diagram, samples are located on the right side of mantle array (Arjmandzadeh and Santos 2014). Upper continental crust (Taylor and McLennan 1985), lower continental crust (Rudnick and Fountain 1995).…”

Section: The Origin Of Igneous Rocks In Moghan Basinmentioning

confidence: 99%

Peshtasar basalts: An example of post-collision basalts in sedimentary basin of Moghan, NW Iran

et al. 2019

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With an east-west exposure trend, Peshtasar Complex, which is located in the sedimentary basin of Moghan, northwestern Iran, is lithologically varied. The main constituent minerals are plagioclase, clinopyroxene and iddingsitised olivine in basalts and plagioclase megacryst, clinopyroxene and leucite in tephrite. The studied rocks are plotted in the fields of basaltic trachy-andesite, trachy-andesite and tephri-phonolite in the total alkali-silica (TAS) diagram as well as high-K to calc-alkaline and shoshonite fields. The chondrite normalised pattern of rare earth elements indicates the enrichment of LILE and LREE as well as the depletion of HFSE and HREE. Nb and Ti have a negative anomaly in the spider diagram. Eu/Eu* represents a positive anomaly for Eu indicating the frequency of calcic plagioclase and low oxygen fugacity in rocks. Geochemical parameters and diagrams predict a magmatic evolution via assimilation-fractional crystallisation process. According to the Ce/Yb vs. Ce diagram, partial melting has happened within the garnet-lherzolite field in the depth of ∼100 km. Based on 87 Sr/ 86 Sr, Shahyourdi samples have EM1 sources, whereas Germi and Tazehkand basalts have EM11 sources that are indicative of different mantle sources for basalts in the western Moghan of the central and eastern areas. Basalts are found in active continental margins associated with the post-collision arcs.

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Section: The Origin Of Igneous Rocks In Moghan Basinmentioning

confidence: 99%

Peshtasar basalts: An example of post-collision basalts in sedimentary basin of Moghan, NW Iran

et al. 2019

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“…gabbros and diorites. (Taylor and McLennan, 1985); lower continental crust (Rollinson, 1993;Rudnick, 1995) with those of MORB (Sun and McDonough, 1989;Rollinson, 1993), DM (McCulloch and Bennett, 1994), OIB (Vervoort et al, 1999), IAB (Arjmandzadeh and Santos, 2014), and mantle array (Gill, 1981;Wilson, 1989;McCulloch et al, 1994). DM, Depleted Mantle; EM I and EM II, enriched mantle sources.…”

Section: Fractionation and Assimilationmentioning

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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“…The Lut Desert is within the Lut Block, whose basement consists of pre-Jurassic metamorphic rocks (pelitic schist) as well as Jurassic sediments intruded by younger (Jurassic to Tertiary) granitic plutons and covered by Tertiary mafic to felsic volcanics (Arjmandzadeh and Santos, 2014;Tirrul et al, 1983;Yazdi et al, 2014). The region is active tectonically with many active faults (Boshrabadi et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

The hydrogeochemistry of shallow groundwater from Lut Desert, Iran: The hottest place on Earth

Lyons

Welch

Gardner

et al. 2020

Journal of Arid Environments

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This paper presents the first shallow groundwater geochemical data from the Lut Desert (Dasht-e-Lut), one of the hottest places on the planet. The waters are Na-Cl brines that have undergone extensive evaporation, but they are unlike seawater derived brines in that the K + is low and the Ca 2+ > Mg 2+ and HCO 3 − > SO 4 2−. In addition to evapo-concentration, the most saline samples indicate that the dissolution of previously deposited salt also acts as a major control on the geochemistry of these waters. High concentrations of gypsum in surface soils along with the water geochemistry indicate the dissolution, precipitation, and reprecipitation of evaporite salts are very important to the overall chemistry of the near surface environment. As demonstrated by the high H 4 SiO 4 concentrations, the weathering of aluminosilicate minerals also contributes to the solutes present. Fixed nitrogen (NO 3 − + NO 2 −) concentrations suggest little to no denitrification is occurring in these waters. The processes controlling the geochemistry of the Lut waters are similar to those in other hyperarid regions of the Earth.

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Sr–Nd isotope geochemistry and tectonomagmatic setting of the Dehsalm Cu–Mo porphyry mineralizing intrusives from Lut Block, eastern Iran

Cited by 41 publications

References 80 publications

Peshtasar basalts: An example of post-collision basalts in sedimentary basin of Moghan, NW Iran

Peshtasar basalts: An example of post-collision basalts in sedimentary basin of Moghan, NW Iran

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

The hydrogeochemistry of shallow groundwater from Lut Desert, Iran: The hottest place on Earth

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