Petrological Journal

Geometric properties, petrography, geochemistry and tectonic setting of columnar andesites of Goorid quarry rubble mine, west of Sarbisheh city (South Khorasan)

Seyyed Saeid Mohammadi; Malihe Nakhaei

Volume 13, Issue 3 , December 2022, , Pages 33-62

https://doi.org/10.22108/ijp.2022.133573.1277

Abstract

IntroductionIn the Goorid quarry rubble mine 5km west of Sarbisheh city (Southern Khorasan) outcrops of andesitic lavas with columnar structures exist and from the view of geological ... Read More IntroductionIn the Goorid quarry rubble mine 5km west of Sarbisheh city (Southern Khorasan) outcrops of andesitic lavas with columnar structures exist and from the view of geological subdivisions, located in the eastern part of the Lut block. The magmatic activity in the Lut block began in the middle Jurassic (165-162 Ma) and reached its peak in the Tertiary. Volcanic and subvolcanic rocks of the Tertiary age cover over half of the Lut block with up to 2000 m thickness and formed due to subduction before the collision of the Arabian and Asian plates (Camp and Griffis, 1982). In the northern parts of the Lut block (eastern Iran), andesitic volcanic rocks along with dacite and rhyodacite have erupted in the interval of 50 million years from the late Cretaceous to the lower Neogene (Jung et al., 1983). In the northwestern and the western parts of Sarbisheh, the outcrops of Tertiary volcanic rocks (Eocene-Oligocene to Pliocene) with basic, intermediate, and acidic compositions along with pyroclastic deposits are observed that andesitic lavas are widespread displaying columnar structure around the village of the Goorid, shows. In this research, the geometrical characteristics, origin, and tectonic setting of the columnar lavas of the Goorid mine have been investigated.Regional GeologyThe studied area is located in the southern part of Sarbisheh 1:100000 geological map. The major rock units in the studied area include Tertiary volcanic and pyroclastic rocks. The oldest rock unit of the area under study consists of turbidite deposits consisting of alternating dark green to gray shales and brown sandstone belonging to the Paleocene-Eocene, which are observed in the west and the southwest of Goorid-e-Paein village. Dark-colored units with basaltic andesite and pyroxene andesite compositions cover a large part of the studied area. These rocks are exposed in the form of single and connected hills around the village of Goorid, which shows a unique columnar structure on the western margin of the village.Materials and MethodsThis research is based on field studies, sampling of rock units, measurement of geometric features of columns, the study of thin sections, and the results of chemical analyses of 11 rock samples. Some 11 samples of volcanic rocks from the Goorid quarry rubble mine were selected and analyzed in Zarazma company, Tehran, Iran by alkaline melting method for major elements (code AF-01) and ICP-MS (for rare and rare earth elements) (code MMS-01).Petrography and GeochemistryBased on petrographic studies, the volcanic rocks of Goorid area have andesitic (pyroxene andesite) composition. Lava-forming minerals including abundant plagioclase, pyroxene, and sometimes opaque minerals. The main texture of these rocks is porphyry with vitreous microlitic groundmass, glomeroporphyry and poikilitic. Zoning, sieve texture, and embayment in plagioclases are signs of disequilibrium conditions during magma crystallization. Investigation of geometric properties of columnar jointing in the Goorid mine shows that columns are a mixture of 4, 5, 6, and 7-side polygons and belong to the irregular group. Based on measurements in three separate blocks of Goorid mine andesitic columns (each block with an area of about one square meter), the average hexagonality index is 0.83. Geochemically, these rocks have an andesite composition with high-K calc-alkaline nature point to subduction zones. Total REE in the Goorid quarry rubble mine columnar lavas show a range from 185.36 to -204.23ppm and a uniform pattern with LREE enrichment relative to HREE similar to calc-alkaline rocks with (La/Yb)N=8.26-9.76, (Ce/Yb)N=6.76-7.85 and weak negative Eu anomalies (average: Eu/Eu*=0.89). Enrichment in LREE relative to HREE with enrichment in LILE (except Ba) and depletion in HFSE (Nb, Ti, P) in studied lavas suggests active continental margin volcanic arc magmatism.Discussion and ResultsA thorough understanding of the occurrence of volcanic rocks in continental orogenic belts, as well as of their origin and source material, is an important component of studies on continental dynamics. Such rocks provide a window into the mantle and aid our understanding of the formative mechanisms of heat–stress anomalies, crust-mantle interaction, material exchange, and geological processes in the deep earth (Liu et al., 2012). Based on the different tectonic environment discriminant diagrams, Goorid andesitic lavas are located in the active continental margin and mantle-enriched areas. Geochemical characteristics of Goorid volcanic rocks, such as LILE and LREE enrichment and depletion of HFSE (negative anomaly of Nb, Ti, and P) and HREE ((Tb/Yb)N=1.40-1.88), indicating the absence or the presence of a small amount of garnet at the origin. The low Dy/Yb ratio (1.78 to 2.32) in these rocks confirms the spinel lherzolitic source. Using the (La/Yb)N (LREE/HREE) and (Gd/Yb)N (MREE/HREE) ratios it was also found that the samples are plotted in the spinel stability field and adjacent to the spinel lherzolite melting curve with about 90% spinel (Açlan et al., 2020).

Thermobarometry of quartz diorite porphyry bodies and investigation of genesis of related skarn using mineral chemistry data in Tighanab area, southeast of Sarbisheh (east of Iran)

Seyyed Saeid Mohammadi; Sun-Lin Chung; Malihe Nakhaei

Volume 11, Issue 4 , January 2021, , Pages 1-28

https://doi.org/10.22108/ijp.2021.122961.1177

Abstract

In Tighanab area at southeast of Sarbisheh, the intrusion of quartzdioritic subvolcanic bodies into the Paleocene- Eocene limestone and sandstone led to the skarn formation. Plagioclase, ... Read More

Petrology and tectonic setting of volcanic and sub-volcanic rocks in the of Khousf (Southwest of Birjand)

Mohammad Hossein Yousefzadeh; Asiyeh Rahmani; Seyed Saeid Mohammadi

Volume 10, Issue 1 , June 2019, , Pages 1-22

https://doi.org/10.22108/ijp.2018.107138.1058

Abstract

Abstract Abstract The study area is located in 10 km east of Khousf (southwest of Birjand).This area is situated in the northwest margin of suture zone and it’s boundary with ... Read More

Petrography, Geochemistry and tectonomagmatic setting of Tertiary volcanic rocks in Ebrahim abad area(southwest of Gazik), Southern Khorasan

Neda Amirteymoori; Seyyed Saeid Mohammadi; Malihe Nakhaei

Volume 10, Issue 1 , June 2019, , Pages 53-74

https://doi.org/10.22108/ijp.2018.111454.1087

Abstract

Volcanic rocks are observed in Ebrahim abad area, southwest of Gazik and in southern Khorasan province that located in northern part of the Sistan suture zone. The studied lavas consist ... Read More

Petrography and Geochemistry of post-collisional adakites and Nb-enriched basalts association in the Sang-e-Rahuzg area (south of Birjand)

Hamid Reza Mohammadi; Seyyed Saeid Mohammadi; Malihe Nakhaei; Mohammad Hossein Zarrinkoub

Volume 8, Issue 30 , September 2017, , Pages 55-80

https://doi.org/10.22108/ijp.2017.81987

Abstract

The studied rocks consist of Paleogene units with andesite and dacite composition and basaltic lavas belong to the Neogene time. Acid and intermediate lavas have medium to high-K calc ... Read More

Geochemistry and tectonic setting of Tertiary volcanic rocks from Garejgan area (southwest of Birjand)

Ameneh Aboutalebi; Seyyed Saeid Mohammadi; Mohammad Hossein Zarrinkoub

Volume 7, Issue 25 , April 2016, , Pages 139-156

https://doi.org/10.22108/ijp.2016.20837

Abstract

The study area is located in 60 km to the southwest of Birjand, and northeastern margin of the Lut block. Tertiary volcanic domes of dacite, rhyodacite, trachyandesite along with tuff ... Read More

Geochemistry and Tectonic setting of Tertiary volcanic rocks in north of Khusf (East of Iran)

Seyyed Mohammad Pourmoafi; Afieh Khajeh; Seyyed Saeid Mohammadi

Volume 5, Issue 19 , December 2014, , Pages 107-122

Abstract

The study area is located in the northern part of Khusf in Southern Khorasan province which borders the Sistan suture zone and the Lut block. Tertiary volcanic lavas outcropped in this ... Read More

Trace elements and REE(s) behaviour in hydrothermal alteration zones Sungun Cu-porphyry deposit, NE Iran

Batoul Taghipour; Mohammad Ali Mackizadeh; Seyed Vahid Mohammadi; Farhad Ahmadnejad

Volume 5, Issue 18 , November 2014, , Pages 33-48

Abstract

The Sungun Cu-porphyry deposit is located in the East Azarbaiyjan province, 75 Km NE of Ahar city. The porphyry type mineralization is related to the Miocene monzonite-quartz monzonite ... Read More

Petrography, geochemistry and dating for the Takht-e baz granitoid, north-western of Birjand, east of Iran

Mohammad Mahdi Khatib; Seyyed Saeid Mohammadi; Sun-Lin Chung; Mohammad Hossein Zarrinkoub

Volume 5, Issue 18 , November 2014, , Pages 63-76

Abstract

The Takht- e baz granitoid in the northwest of Birjand is cropped out in the vicinity of pyroclastic units composing of tuff, marly tuff and breccia. Petrography and major elements ... Read More

The geochemistry and petrogenesis of Hossein abad Tertiary volcanic rocks (southwest of Birjand, East of Iran)

Seyed Saeid Mohammadi; Mohammad Hossein Zarrinkoub; Fatemeh Keramati

Volume 2, Issue 6 , November 2011, , Pages 83-96

Abstract

The study area is located 50 km southwest of Birjand, in the northwest margin of Sistan suture zone. In Hosseinabad area, the Tertiary volcanic rocks cross-cut the upper Cretaceous ... Read More

Geochemistry and petrogenesis of Givshad volcanic and subvolcanic rocks (southwest of Birjand, east of Iran)

Mohammad Hossein Zarrinkoub; Seyed Saeid Mohammadi; Fazilat Yousefi

Volume 2, Issue 7 , June 2011, , Pages 39-50

Abstract

The study area is located 41 Km Southwest of Birjand, in the northern part of Sistan suture zone. An Eocene dioritic subvolcanic body together with andesites and basaltic andesites ... Read More

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Author = Mohammadi, Seyyed Saeid

Geometric properties, petrography, geochemistry and tectonic setting of columnar andesites of Goorid quarry rubble mine, west of Sarbisheh city (South Khorasan)

Abstract

Thermobarometry of quartz diorite porphyry bodies and investigation of genesis of related skarn using mineral chemistry data in Tighanab area, southeast of Sarbisheh (east of Iran)

Abstract

Petrology and tectonic setting of volcanic and sub-volcanic rocks in the of Khousf (Southwest of Birjand)

Abstract

Petrography, Geochemistry and tectonomagmatic setting of Tertiary volcanic rocks in Ebrahim abad area(southwest of Gazik), Southern Khorasan

Abstract

Petrography and Geochemistry of post-collisional adakites and Nb-enriched basalts association in the Sang-e-Rahuzg area (south of Birjand)

Abstract

Geochemistry and tectonic setting of Tertiary volcanic rocks from Garejgan area (southwest of Birjand)

Abstract

Geochemistry and Tectonic setting of Tertiary volcanic rocks in north of Khusf (East of Iran)

Abstract

Trace elements and REE(s) behaviour in hydrothermal alteration zones Sungun Cu-porphyry deposit, NE Iran

Abstract

Petrography, geochemistry and dating for the Takht-e baz granitoid, north-western of Birjand, east of Iran

Abstract

The geochemistry and petrogenesis of Hossein abad Tertiary volcanic rocks (southwest of Birjand, East of Iran)

Abstract

Geochemistry and petrogenesis of Givshad volcanic and subvolcanic rocks (southwest of Birjand, east of Iran)

Abstract