Mahmoud Sadeghian

Shahrood University of Technology · School of Earth Sciences

Investigation of variations in the micro-texture and chemical composition of plagioclases (core to rim) allows the sequencing of the magma chamber processes and helps interprete and associate textures to specific processes. In this contribution, the micro-textures and chemical zoning of the plagioclases, significant recorder of magma chamber proces...

Cenozoic adakitic rocks of the northern part of the Central Iran Structural Zone (CISZ) are among the notable geological features of the terrains in northeast Iran, so a comprehensive comparison of several of these adakitic sequences is presented. This lithogeochemical analysis is constrained to examining adakitic magmatism of the three magmatic be...

This study investigates for the first time melt inclusions (MI) that are found within fundamental minerals of subvolcanic rocks in Torud-Ahmad Abad magmatic belt. The Torud-Ahmad Abad magmatic belt is situated in south-southeast of Shahrood and belongs to the northern part of central Iran structural zone. Melt inclusions represent liquids that were...

In this study, we investigated the melt inclusions (MI) that are hosted in constituent minerals of the hypabyssal rocks in in Torud-Ahmad Abad magmatic rocks in south-southeast of Shahrood (Northern part of central Iran structural zone) for the first time (Figure 1). Based on previous studies, the composition of hypabyssal rocks in Torud-ahmad Abad...

Numerous post-ophiolite intrusions exposed into the late Cretaceous-Paleocene Sabzevar ophiolite belt, northeast Iran. The intrusions consist of calc-alkaline intermediate to felsic rocks with metaluminous to peraluminous in nature and adakitic affinities. Based on UTh- Pb dating on separated zircons by SHRIMP □,the emplacement age of these rocks i...

Tarik Darreh gabbroic intrusion cropped out in the southwest of Ahmad Abad Khartooran (220 Km southeast of Shahrood). This gabbroic intrusion emplaced in Paleocene to middle Eocene volcanic and volcanosedimentary sequence of northern part of the Central Iran Structural Zone. In more differentiated parts, gabbroic rocks cut by a few small and narrow...

In the northern part of the central Iran structural zone, a thick sequence of Paleocene to middle Eocene volcanic and volcanosedimentary rocks crop out. This sequence was intruded by numerous dikes and domes, with a compositional range including trachybasaltic andesite, trachyandesite, trachydacite and dacite. According to the results of geochemica...

In the northern part of the central Iran structural zone, a thick sequence of Paleocene to middle Eocene volcanic and volcanosedimentary rocks crop out. This sequence was intruded by numerous dikes and domes, with a compositional range including trachybasaltic andesite, trachyandesite, trachydacite and dacite. According to the results of geochemica...

The Torud–Ahmad Abad magmatic belt is located in the south-southeast of Shahrood (East of Semnan Province, NE Iran) and lies in the northern part of the Central Iran Structural Zone (CISZ), where a thick sequence of Paleocene to middle Eocene volcanic and volcanosedimentary rocks cropped out. This sequence was intruded by numerous dikes, hypabyssal...

Sahl area, in the south of Shahrood, is a part of the northern portion of the Central Iran Structural Zone. The area is dominated by a thick sequence of the Paleocene to the middle Eocene volcanic and volcano-sedimentary rocks. Hypabyssal igneous rocks as dome, dike and sill with trachybasaltic andesite and trachyandesite composition intruded the s...

In Ahmadabad Khartouran region located in 175 Km southeast of Shahrood, A significant number of adakitic domes crop out, which intruded into the Paleocene- Eocene volcanosedimentary rocks. Lithological compositions of these domes include andesite, trachyandesite, trachyandesite and dacite. Pyroxene (augite), green hornblende and plagioclase are typ...

Delbar metamorphic complex is located in 130 Km south of Shahrood (Biarjmand area) in Northern margin of the central Iran zone. The varied metamorphic rocks including meta-psammite, meta-greywacke, meta-pelite, marble and amphibolite and mylonitized granites and leucogranites intrusions are exposed in this complex. The field and petrography evidenc...

Subduction-related adakite-type intrusive rocks emplaced into the late Cretaceous–Paleocene Sabzevar ophiolite zone, northeast Iran, range from Mg-andesite to rhyodacite in composition. Here we investigate the magma supply system to these subvolcanic intrusive rocks by applying thermobarometric mineral and mineral–melt equilibrium models, including...

The Delbar Metamorphic-Igneous Complex (DMIC) consists of the medium to high-grade metamorphic rocks and granites – leucogranites is located in the Biarjmand region, in Central Iran. U–Pb dating of the gneisses yielded the ages of 546 ± 3.7–547 ± 6.8 Ma similar to the crystallization ages of leucogranites (541 ± 4.7–547 ± 11 Ma) are consistent to t...

Subduction-related adakite-type intrusive rocks emplaced into the late Cretaceous-Paleocene Sabzevar ophiolite zone, NE Iran, range from Mg-andesite to rhyodacite in composition. Here we investigate the magma supply system to these subvolcanic intrusive rocks by applying thermobarometric mineral and mineral-melt equilibrium models, including amphib...

Bouin-Miandasht Granitoid Pluton (BMGP), which outcropped to the north of Bouin-Miandasht-Aligoudarz road, was emplaced into low to medium grade of Triassic to early Jurassic metapelitic rocks of Sanandaj-Sirjan Structural Zone. In this study we do provide the first investigations of BMGP by means of anisotropy of magnetic susceptibility (AMS). Mos...

Ellipsoidal huge granitoidic batholiths of Zahedan, with NW-SE trending, located in south of this city which is intruded in low metamorphosed Eocene flysches (eastern Iran flysch zone). This batholith has two compositional terms: an extensive intermediate-acid term includes diorite-granodiorite with igneous source (I-type origin) and a low extent c...

The ∼32 Ma, NW-SE elongate, 75 km-long granite pluton of Zahedan is one of the most conspicuous geological features of southeast Iran. It is composed of metaluminous to weakly peraluminous rocks, corresponding to magnetite- and ilmenite-bearing I-type granitoids, ranging from diorites to granites. All rocks, including the late andesitic to dacitic...