AJES
Asian Journal of Experimental Sciences
 
 
AJES


VOLUME 33: ISSUE 2

CONTENTS YEAR 2019

Asian J. Exp. Sci., V 33, No. 2, July 2019, 1-10

 

Mineralogy and Geochemistry of Peridotites of Noorabad Ophiolite as Part of Kermanshah Ophiolite (Lorestan Province, West Iran)

 

Masoud Kiani *, Nima Nezafati,Mansour Vosoughi and Abediniand AliSolgi,

 

Department of Geology & Geophysics, Islamic Azad University, Science and Research Branch, Tehran- 1477893855, Iran*
Email:kianigemology@gmail.com
Received: April 11, 2018
Revised: March 15, 2019
Accepted: March 30, 2019

 

Abstract :  The Kermanshah ophiolite, a part of outer ophiolites of Zagrosbelt, located in the high Zagros zone (Zagros Thrust), trending NW - SE, stretching 230 km in length and 30-60 km in width, west of Iran is a part of the Neo-Tethys oceanic crust, that was obducted on the margin of the Iranian Plate. The peridotites of the ophiolite in Noorabad area include dunites, harzburgites and lherzolites, which are depleted in incompatible elements along with a negative slope of incompatible light elements to 'high field strength elements' (HFSE). These rocks in normalized chondrite show depletion in REE with a negative slope of HFSE to 'large ion lithophile elements' (LILE). The melting percentage in studied peridotites indicates a high fo 2 than MORB, which indicates that the peridotites of this region are related to the peridotites of the Supra Subduction Zone (SSZ) in the Neo-Tethys Ocean.

 

Key words :  Kermanshah ophiolite, Zagrosbelt, Peridotites,Supra Subduction Zone.

 

 

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Asian J. Exp. Sci., V 33, No. 2, July 2019, 11-18

 

Microfacies Analysis and Reconstruction of the Ancient Sedimentary Environment of Jahrom Formation in Kuhsokhteh, High Zagros (West of Iran)

 

Khadijeh Changaei1, Seyed Ahmad Babazadeh2*, Ali Arian3 and Borzou AsgariPirbaloti4.

 

1&3-Department of geology, Islamic Azad University, Science and Research branch, Tehran, Iran.
2Department of science, Payame Noor University, Po. Box 19395-3697, Tehran, I. R. Iran. 4Oil engineering group, Islamic Azad University, Masjedsoleiman, Iran. *Corresponding author, e-mail:paleontology1367s@gmail.com
Received: April 28, 2019
Revised: May 22, 2019
Accepted: July 04, 2019

 

Abstract : The Jahrom Formation has been studied in terms of facies analysis and reconstruction of the ancient environment in the stratigraphic section of Kuhsokhteh and located in south west of Shahrekord. This formation is 157 m in thick, and composed of the succession of limestones, marls and inter bedded of dolomites. Based on field studies and lithological characters, about 9 sedimentary rock units have been identified and introduced. On the other hand, based on microscopic studies, 8 facies including mudstone, dolostone/ dolomitic limestone, Interaclastic wackestone, Miliolid - pellet wackestone, orbitolites- Miliolid - pellet wackestone, bioclastic grainstone, hyaline- procellaneous foraminifera wake stone and hyaline foraminifera wakestone have been introduced. The diversity of variety of foraminiferal fauna and texture evidences suggests that these microfacies are expanded from coastal environment to shallow platforms (fore shoal) and deposited in a carbonate ramp from inner to middle carbonate ramp.

 

Key words : Microfacies, Ancient sedimentary environment, Kuhsokhteh, High Zagros, West Iran.

 

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Asian J. Exp. Sci., V 33, No. 2, July 2019, 19-25

 

Geochemistry and Petrogenesis of Corundum Pegmatites and Corundum Crystal Geochemistry in Alvand Batholith in the Southwest of Hamadan

 

Hadis Sadeghi1, Shahryar Mahmoudi*2, Mohammad Reza Jafari3, Mohammad Ali Arian4

 

1,3,4Islamic Azad University, North Tehran Branch, Tehran, Iran, 2Kharazmi University, Tehran, Iran
*corresponding author: Economicgeology1367s@gmail.com
Received: March 5, 2019
Revised: April 10, 2019
Accepted: May 17, 2019

 

Abstract : Corundum mineralization along with granitoid mass in pegmatitic rocks is located in south of Hamadan (west of Iran) and in the igneous and metamorphic zone of Sanandaj-Sirjan. Corundum crystals within these pegmatites are up to three centimeters long. Most of them are in the form of zinolite, and the margin of these crystals is surrounded by grained mica. These corundums have two types of irregular plates (parting). The results of chemical analysis using Scanning Electron Microscope (SEM) shows that O, C, Fe, Ti, Si, Ca, K, Cl and Alare the main elements forming the studied corundums and their blue color is due to the presence of iron and titanium. The presence of high amounts of silica in these samples could indicate the formation of these corundums from mineralized kyanite due to the increase in pressure and temperature during the Metamorphism.

 

Key words : Hamadan, Pegmatites, Corundum, Metamorphism, SEM.

 

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Asian J. Exp. Sci., V 33, No. 2, July 2019; 27-33

 

Geodynamic Evolution of Noorabad Ophiolites in Supra Subduction Zone of the Neo-Tethys Ocean (west Iran)

 

Masoud Kiani*, NimaNezafati, Mansour Vosoughi Abedini and Ali Solgi

 

Department of Geology and Geophysics, Islamic Azad University, Science and Research Branch, Tehran, Iran
Corresponding author: * kiangemology@gmail.com
Received: February 19, 2019
Revised: March 02, 2019
Accepted: April 09, 2019

 

Abstract : Zagros ophiolite belt in Iran, is a part of the Eastern Mediterranean belt ophiolite. This belt is divided into two groups: outer and inner Zagros ophiolites that ophiolites around central Iran are inner belt ophiolites and outer ophiolites include the Kermanshah, Neyriz and Hajiabad ophiolites. The Noorabad ophiolite is part of Kermanshah ophiolites. The rocks of this ophiolite are including peridotite, serpentinite, pegmatite gabbro, layered gabbro, isotropic gabbro, sheeted dike complexes, pillow basalts, andesite lavas and sedimentary rocks (radiolarite and late Cretaceous pelagic limestone). Based on geochemical studies the rocks of this ophiolitic complex have tholeiite and calcalalkine magmas signatures and formation in Suprasubduction zone environment. The Noorabad ophiolite represents the Neo- Tethyan oceanic lithosphere which originally existed between the Arabian-Iranian bloks that in Miocene emplaced.

 

Key words: Zagros, Noorabad ophiolite, Suprasubductionzone, Neo- Tethyan ocean.

 

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Asian J. Exp. Sci., V 33, No. 2, July 2019, 35-43

 

Impact Assessment of the Traditional Fishing Festival (Maun Mela) of Jaunpuri Community, Uttarakhand (India): A Conservation Approach

 

Renu Kumari1, Ankita Rajpoot1* , Megha Bisht1, Ramesh Singh1, Manju Sundriyal2, Dhyanendra Kumar1 and Ved P. Kumar1*

 

1Maaty Biodiversity Conservation & Societal Research Organization, 218-Kaulagarh, Dehradun-248195, Uttarakhand (India)
2Uttarakhand Science Education & Research Center, 33, Phase-II, Vasant Vihar, Kanwali Rd, Vasant Vihar Phase 2, Raj Vihar, Balliwala, Dehradun-248006, Uttarakhand (India)
*Corresponding Author Email ID: *Ved P Kumar:tiwaryved@gmail.com
Renugusain24@gmail.com; bishtmegha1994@gmail.com; rksingh@gmail.com
profdkumar@gmail.com; ankita.maaty@gmail.com
Received: June 10, 2019
Revised: June 22, 2019
Accepted: July 02, 2019

 

Abstract : The traditional fishing festival (Maun Mela) is an annual community tradition of Gharwal region of Uttarakhand, was started around a century back by the ruler of Tehri, Raja Sudarshan Shah, during the pre- Independence era. In Maun mela, thousands of villagers from Jaunpur (Tehri) and Jaunpur-Bhabar (Dehradun) area, participate and gathering at Aglar River valley where they celebrate the fishing festival. Peoples prepare "Maun Powder" using the stem bark, leaves, and seed of the "Timru" plant (Zanthoxylum armatum) and pour into the river during the festival. The powder of this plant paralyses the fishes and has easy to its catching during the fishing.

However, utilization of plant powder as fish poison an easy mean of catching fish but they are unaware of these facts: How this powder affects other aquatic fauna such as amphibians and snakes etc? How they destroy the whole ecosystem of Aglar River? Therefore, we decided to assess the impact of the fishing festival on Aglar river fauna.

The present study, conducted at Aglar River basin, where this traditional festival was organized. During the study, we observed, on the day of celebration there was a mass killing of fish diversity within a short time, among them few species were listed under IUCN red list data book. Moreover, this fishing festival, not only affect fish diversity, a large number of little bugs, insects, butterflies, grasshoppers, spiders, snakes, and amphibians were also affected. The number of dead tadpoles was larger than any other groups. Therefore, to maintain the diversity of Aglar river valley, it is an urgent need to organize this folk festival sustainably without harming the sentiment of the community. The present study advocate to organize awareness and sensitization program among the peoples about the biodiversity conservation.

 

Key words: Maun mela, Timur powder, Biodiversity, Fish killing, and Conservation.

 

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AJES