Paleogene continental-arc type volcanism in North Qazvin, North Iran: facies analysis and geochemistry

Asiabanha, Abbas; Ghasemi, Habibollah; Meshkin, M.

doi:10.1127/0077-7757/2009/0144

Cited by 17 publications

(13 citation statements)

References 15 publications

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“…Undoubtedly, the middle Eocene volcanic rocks of the area were related to Neo-Tethyan subduction and post-Eocene magmatism of the region associated with collision and post-collision events during the Oligocene-Miocene times (Berberian and King 1981;Ghasemi and Talbot 2006;Ghasemi et al 2010;Shabanian et al 2012;Asiabanha et al 2009Asiabanha and Foden 2012).…”

Section: Implications For Geodynamic Evolutionmentioning

confidence: 98%

“…12). The petrogenesis of the volcanics was closely related to major events during the geodynamic evolution of northeast Iran (Shojaat et al 2003;Shabanian et al 2012;Alavi 1996;Asiabanha et al 2009Asiabanha and Foden 2012). The Eocene successions, mainly composed of volcanics, c La/Yb vs. Dy/Yb plot used to determine the degrees of partial melting of the DAEV source rocks (after Thirlwall et al 1996).…”

Section: Implications For Geodynamic Evolutionmentioning

confidence: 99%

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Petrochemistry and tectonic setting of the Davarzan-Abbasabad Eocene Volcanic (DAEV) rocks, NE Iran

Ghasemi

Rezaei-Kahkhaei

2014

Miner Petrol

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The Davarzan-Abbasabad Eocene Volcanics (DAEV) is located at the northeastern edge of the volcanic-plutonic belt of the Central Iran structural zone. DAEV start with continental to shallow marine sediments of the Paleocene-Eocene and then continue extensively with shallow submarine to sub-aerial basaltic and andesitic volcanics, related volcaniclastics and sedimentary rocks during the Middle-Upper Eocene. The volcanics are olivine basalts, basaltic andesites and andesites in composition and show porphyric, hyaloporphyritic, glomeroporphyric, fluidal, and seriate textures. The geochemistry of DAEV points to a fractional series from olivine basalt to andesite with transitional and medium to high K calc-alkaline nature. Their primitive mantle and chondrite-normalized trace element patterns show that these rocks have high light-and low heavy rare earth elements and are enriched in large-ion lithophile elements and depleted in high field strength elements (Nb, Ti, P, and Zr). Integration of geochemical and petrological data with regional studies indicates that the magma(s) forming the DAEV rocks were derived from 14 to 16 % partial melting of an enriched mantle source in 70-100 km depths during Middle-Upper Eocene time in an intra-arc extensional setting. This mantle source had been previously metasomatized by fluids derived from Sabzevar Neo-Tethyan-subducted slab during the Upper Cretaceous-Paleocene.

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Section: Implications For Geodynamic Evolutionmentioning

confidence: 98%

Section: Implications For Geodynamic Evolutionmentioning

confidence: 99%

Petrochemistry and tectonic setting of the Davarzan-Abbasabad Eocene Volcanic (DAEV) rocks, NE Iran

Ghasemi

Rezaei-Kahkhaei

2014

Miner Petrol

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“…Consequently, the volcanic deposits of the study area are divided into an Eocene volcanic succession and post-Eocene subaerial volcanic deposits (Fig. 2), which are described in detail below. Asiabanha et al (2009) divided the Eocene volcanics in the northern terrain into two main facies. The first is a volcaniclastic facies (total thickness, 300-400 m) that is subdivided into two subfacies: pyroclastic green tuffs (PGTs) in the lower part and epiclastic variously colored tuffs and tuffaceous deposits (EVTs) in the upper part.…”

Section: Volcanostratigraphymentioning

confidence: 99%

“…Younger (post-Eocene) magmatism, which has continued until the present, has a different style of volcanism but a similar geochemical signature compared with the Eocene magmatism. The Eocene volcanic succession in the Alborz magmatic assemblage has been studied previously (e.g., Dedual, 1967;Annells et al, 1975;Ebrahimi, 2000;Asiabanha et al, 2009), whereas the characteristics of the post-Eocene volcanics are poorly known because of sparse outcrop and uncertainties regarding age relations. Therefore, the aim of this study is to describe the petrological occurrence of post-Eocene magmatic events of the Alborz zone in the framework of regional tectonics and to compare these rocks with Eocene lavas, in order to obtain a better understanding of the complex geological evolution of the Alborz zone.…”

Section: Introductionmentioning

confidence: 98%

“…Therefore, the aim of this study is to describe the petrological occurrence of post-Eocene magmatic events of the Alborz zone in the framework of regional tectonics and to compare these rocks with Eocene lavas, in order to obtain a better understanding of the complex geological evolution of the Alborz zone. Asiabanha et al (2009) divided the Eocene volcanic complex at Alborz (the Karaj Formation) into two main facies: (1) An earlier volcano-sedimentary facies composed of pyroclastic and epiclastic deposits formed by subaqueous eruptions in a shallow sedimentary basin during the Early-Middle Eocene. The basin was then uplifted and overprinted by orogenic movements that produced tight folds and thrust faults.…”

Section: Introductionmentioning

confidence: 99%

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Post-Eocene volcanics of the Abazar district, Qazvin, Iran: Mineralogical and geochemical evidence for a complex magmatic evolution

Asiabanha

Bardintzeff

Kananian

et al. 2012

Journal of Asian Earth Sciences

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Application of WDXRF in the provenance studies of Persian haft rang tiles: a statistical approach

et al. 2013

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An outstanding style of Persian tilework, which emerged from the north‐eastern Iran in the 15th century, was extensively used for decorating architectural facades during the Safavid period (from the 16th through the 18th century). This type of tilework, the so‐called haft rang, technically comprises of forming a clay body and firing two glazed layers on top of the body. In the present paper, the first analytical data concerning haft rang tiles is provided. To do so, forty three samples of Safavid haft rang bodies were analysed by wavelength dispersive x‐ray fluorescence (WDXRF) and the obtained data were handled by principal component analysis (PCA). The results showed that the 17th century haft rang tiles wherever found are local products; that is, Safavid tile‐makers have used local clay sources to make the bodies of haft rang tiles. The analytical data also showed that old tileworks, in general sense, can be simply replaced by newly manufactured tiles or, at least, all tilework revetments in an individual edifice might not have been produced in an identical workshop. Moreover, WDXRF was used as an accurate and precise method to determine the chemical composition and to support compositional classification in provenance studies and can be considered as a reliable alternative for studying the provenance of archaeological ceramics. Copyright © 2013 John Wiley & Sons, Ltd.

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Paleogene continental-arc type volcanism in North Qazvin, North Iran: facies analysis and geochemistry

Cited by 17 publications

References 15 publications

Petrochemistry and tectonic setting of the Davarzan-Abbasabad Eocene Volcanic (DAEV) rocks, NE Iran

Petrochemistry and tectonic setting of the Davarzan-Abbasabad Eocene Volcanic (DAEV) rocks, NE Iran

Post-Eocene volcanics of the Abazar district, Qazvin, Iran: Mineralogical and geochemical evidence for a complex magmatic evolution

Application of WDXRF in the provenance studies of Persian haft rang tiles: a statistical approach

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