U–Pb dating and emplacement history of granitoid plutons in the northern Sanandaj–Sirjan Zone, Iran

Mahmoudi, Shahryar; Corfú, Fernando; Masoudi, Fariborz; Mehrabi, Behzad; Mohajjel, Mohammad

doi:10.1016/j.jseaes.2011.03.006

Cited by 145 publications

(108 citation statements)

References 43 publications

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“…However, it has been determined that the Alvand plutonic complex in the Hamadan region has numerous U-Pb zircon ages in the range 167-153 Ma (Shahbazi et al, 2010;Mahmoudi et al, 2011). These plutonic rocks intruded the crystalline schists in the Hamadan region, which are therefore pre-mid Jurassic (Mahmoudi et al, 2011;Mohajjel and Fergusson, 2014). The widespread Jurassic calc-alkaline igneous rocks of the Sanandaj-Sirjan Zone are consistent with its development as an elongate magmatic arc along the southwestern margin of Central Iran (Mahmoudi et al, 2011;Mohajjel and Fergusson, 2014).…”

Section: Northeast Of the June Complex Is The Triassic To Lower Jurassicmentioning

confidence: 93%

“…In the Hamadan region, the Hamadan Phyllite locally contains fossils as young as early Middle Jurassic (Baharifar et al, 2004) whereas our rare detrital zircons from the phyllite show that our sample is no older than the mid Permian. Additionally, plutonic rocks in the Hamadan region are typically massive and have contact metamorphosed the Hamadan Phyllite and are mid Jurassic (167-153 Ma; Ahmadi Khalaji et al, 2007;Shahbazi et al, 2010;Mahmoudi et al, 2011;Mohajjel and Fergusson, 2014). Therefore, we regard the greenschist to amphibolite facies metamorphism of the Hamadan Phyllite as mid Jurassic (~168-175 Ma), and immediately predating the mid Jurassic plutonic rocks in the Golpaygan-Hamadan region.…”

Section: Cimmerian Orogenymentioning

confidence: 96%

“…These plutonic rocks intruded the crystalline schists in the Hamadan region, which are therefore pre-mid Jurassic (Mahmoudi et al, 2011;Mohajjel and Fergusson, 2014). The widespread Jurassic calc-alkaline igneous rocks of the Sanandaj-Sirjan Zone are consistent with its development as an elongate magmatic arc along the southwestern margin of Central Iran (Mahmoudi et al, 2011;Mohajjel and Fergusson, 2014). Elsewhere in Iran, Early to Middle Jurassic deformation is attributed to the Cimmerian Orogeny (Sheikoleslami et al, 2008;Sheikholeslami, 2015).…”

Section: Northeast Of the June Complex Is The Triassic To Lower Jurassicmentioning

confidence: 96%

“…Metamorphic and associated plutonic rocks have common K-Ar ages in the range 150-60 Ma indicative of cooling in the Cretaceous to early Palaeogene (Baharifar et al, 2004). However, it has been determined that the Alvand plutonic complex in the Hamadan region has numerous U-Pb zircon ages in the range 167-153 Ma (Shahbazi et al, 2010;Mahmoudi et al, 2011). These plutonic rocks intruded the crystalline schists in the Hamadan region, which are therefore pre-mid Jurassic (Mahmoudi et al, 2011;Mohajjel and Fergusson, 2014).…”

Section: Northeast Of the June Complex Is The Triassic To Lower Jurassicmentioning

confidence: 99%

“…2 for locations). References: (1) Nutman et al (2014), (2) Shakerardakani et al (2015), (3) this work, (4) Mahmoudi et al (2011), (5) Hassanzadeh et al (2008), (6) Bea et al (2011), (7) Alirezaei and Hassanzadeh (2012), (8) Ramezani and Tucker (2003), Verdel et al (2007), (9) Zanchi et al (2015) , (10) Balaghi Einalou et al (2014), and (11) Horton et al (2008). Mattei et al, 2015).…”

Section: Structural Interpretation Of the June Complexmentioning

confidence: 99%

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The Sanandaj–Sirjan Zone in the Neo-Tethyan suture, western Iran: Zircon U–Pb evidence of late Palaeozoic rifting of northern Gondwana and mid-Jurassic orogenesis

et al. 2016

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Section: Northeast Of the June Complex Is The Triassic To Lower Jurassicmentioning

confidence: 93%

Section: Cimmerian Orogenymentioning

confidence: 96%

Section: Northeast Of the June Complex Is The Triassic To Lower Jurassicmentioning

confidence: 96%

Section: Northeast Of the June Complex Is The Triassic To Lower Jurassicmentioning

confidence: 99%

Section: Structural Interpretation Of the June Complexmentioning

confidence: 99%

See 3 more Smart Citations

The Sanandaj–Sirjan Zone in the Neo-Tethyan suture, western Iran: Zircon U–Pb evidence of late Palaeozoic rifting of northern Gondwana and mid-Jurassic orogenesis

et al. 2016

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The Neotethyan Sanandaj‐Sirjan zone of Iran as an archetype for passive margin‐arc transitions

2016

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The Sanandaj-Sirjan zone of Iran is a northwest trending orogenic belt immediately north of the Zagros suture, which represents the former position of the Neotethys Ocean. The zone contains the most extensive, best preserved record of key events in the formation and evolution of the Neotethys, from its birth in Late Paleozoic time through its demise during the mid-Tertiary collision of Arabia with Eurasia. The record includes rifting of continental fragments off of the northern margin of Gondwanaland, formation of facing passive continental margins, initiation of subduction along the northern margin, and progressive development of a continental magmatic arc. The latter two of these events are critical phases of the Wilson Cycle that, elsewhere in the world, are poorly preserved in the geologic record because of superimposed events. Our new synthesis reaffirms the similarity between this zone and various terranes to the north in Central Iran. Late Paleozoic rifting, preserved as A-type granites and accelerated subsidence, was followed by a phase of pronounced subsidence and shallow marine sedimentation in Permian through Triassic time, marking the formation and evolution of passive margins on both sides of the suture. Subduction and arc magmatism began in latest Triassic/Early Jurassic time, culminating at~170 Ma. The extinction of arc magmatism in this zone, and its shift northeastward to form the subparallel Urumieh-Dokhtar arc, occurred diachronously along strike, in Late Cretaceous or Paleogene time. Post-Cretaceous uplift transformed the zone from a primarily marine borderland into a marine archipelago that persisted until mid-Tertiary time.

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Subduction, high‐P metamorphism, and collision fingerprints in South Iran: Constraints from zircon U‐Pb and mica Rb‐Sr geochronology

Moghadam

Bröcker

Griffin

et al. 2017

Geochem Geophys Geosyst

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The Esfandagheh region of the Zagros Orogenic Belt is an ideal area to address many aspects of continental convergence between Arabia and Eurasia, including incorporation of Late Neoproterozoic (Ediacaran) basement, subduction-related magmatism, and the formation of HP/LT rocks. The rock units exposed here represent a presumably Jurassic magmatic arc within the Sanandaj-Sirjan Zone (SSNZ), remnants of oceanic lithosphere, blueschist-and greenschist-facies rocks, and a distinct group of poorly characterized rocks. U-Pb ages define four populations, related to Paleoproterozoic, Ediacaran, Carboniferous, and Jurassic magmatic events. U-Pb ages of 1.8-1.7 Ga for a pegmatite represent the first report of Paleoproterozoic rocks in Iran. Zircon U-Pb ages from the SSNZ provide evidence for Ediacaran (547 Ma), Carboniferous (326-312 Ma), and Jurassic (194-186 Ma) magmatic activity. Zircons from the Haji-Abad ophiolites yielded Jurassic ages. The new Rb-Sr results from white micas provide indications of a poorly constrained >85 Ma high-pressure metamorphic history. Rb-Sr ages of two chlorite-epidoteactinolite schists indicate that greenschist-facies P-T conditions had already been attained around 130-125 Ma. The new results are consistent with a model in which the closure of the Esfandagheh Ocean and the subsequent collision between Arabia and Iran led to incorporation of Paleoproterozoic and Cadomian rock units and tectonic juxtaposition of all lithotectonic elements, from oceanic lithosphere to continental crust, along the Main Zagros Suture Zone.

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U–Pb dating and emplacement history of granitoid plutons in the northern Sanandaj–Sirjan Zone, Iran

Cited by 145 publications

References 43 publications

The Sanandaj–Sirjan Zone in the Neo-Tethyan suture, western Iran: Zircon U–Pb evidence of late Palaeozoic rifting of northern Gondwana and mid-Jurassic orogenesis

The Sanandaj–Sirjan Zone in the Neo-Tethyan suture, western Iran: Zircon U–Pb evidence of late Palaeozoic rifting of northern Gondwana and mid-Jurassic orogenesis

The Neotethyan Sanandaj‐Sirjan zone of Iran as an archetype for passive margin‐arc transitions

Subduction, high‐P metamorphism, and collision fingerprints in South Iran: Constraints from zircon U‐Pb and mica Rb‐Sr geochronology

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