نتایج جستجو برای: Damavand Volcano

تعداد نتایج: 7585  

Journal: :geopersia 2014
jyoti sharma habib alimohammadian amavala bhattacharyya parminder ranhotra morteza djamali

palynological analyses from exposed palaeolacustrine deposits located at the flanks of damavand volcano, in the central alborzmountains in northern iran, provide a broad idea of the temporal variation of vegetation according to climate changes during a rangeof limited time intervals during the quaternary period. this research reveals that the regional vegetation of the study area had been asemi...

M. Mortazavi

Damavand is a fascinating dormant stratovolcano, 60 km to the ENE of Tehran located in the Alborz Mountains. Damavand volcanic products consist of lava flows and pyroclastic fall, flow and surge deposits from different eruption cycles. The volcanic rocks ranges from trachyandesite to trachyadacite and minor basalt. The mineral assemblage consists of potash feldspar (Or43/7), Plagioclase (An25 t...

M. Mortazavi R.S.J. Sparks

Damavand volcano is located 60 km to the East North- East of Tehran. It is a dormant stratovolcano outcrop in the Alborz Mountains of northern Iran and is the highest mountain (5670 m) in the Middle East and West Asia. Mazandaran Province, one of the most populous provinces by population density, Semnan and Gorgan provinces further east are neighbours of the Damavand. Volcanism in Damavand goes...

Journal: :journal of sciences, islamic republic of iran 2009
m. mortazavi

damavand is a large dormant stratovolcano in the alborz mountains of northern iran located in one of the most populous provinces, which could be adversely affected by tephra fall from damavand. the youngest known eruption is a lava flow on the western flanks with an age of 7.3 ka. the volcanic products are predominantly porphyritic trachyandesite. three major young pumice deposits, named here a...

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1-Introduction Damavand volcano was formed by explosive and non-explosive eruptions on the old eroded rock units (Mesozoic and older) of Central Alborz during the Quaternary period and formed two huge cone (Old and Young Damavand). Davidson et al. (2004) determined the time of Old-Damavand activity from 1800 to 800 thousand years ago by measuring Ar/Ar and U-Th/He methods. According to their ...

Journal: :Frontiers in Earth Science 2022

The seismic history of the Mosha fault, largest and most active fault Eastern Tehran metropolis, its relation to Damavand volcano, highest mountain in Middle East, is investigated. We deduce that central Mosha, near Damavand, has a higher seismicity than either western or eastern segments. On 7 May 2020, an Mw 5.1 earthquake occurred on about 40 km east 10 southwest crest, it was felt intensely...

M. Mortazavi

Damavand is a large dormant stratovolcano in the Alborz Mountains of northern Iran located in one of the most populous provinces, which could be adversely affected by tephra fall from Damavand. The youngest known eruption is a lava flow on the western flanks with an age of 7.3 ka. The volcanic products are predominantly porphyritic trachyandesite. Three major young pumice deposits, named here a...

The study subvolcanic intrusion, comprising syenodiorite, monzonite and quartz-monzonite, is cropped out in Talkh-rud valley located in the northeast of Damavand volcano flank. This sub-volcanic intrusion possesses porphyritic texture and consists of plagioclase, alkali feldspars, phelogopite, amphibole, clinopyroxene, apatite and titanomagnetite. Evidences of disequilibrium such as zoning and ...

Mohammad Mobasher germi, Monireh Kheirkhah,

Introduction Damavand volcano is a large composite cone (≥ 400 km3) with height elevation (5678m) above sea level, in Central Alborz. This volcano consists of two buildings including old lavas between 1.8 to 0.8 Ma in the northern and eastern part of the current cone and young lavas with about 0.4 to 7 ka years in the south and west part. Trachytic and trachy-andesitic lavas are the most abund...

Journal: :فیزیک زمین و فضا 0
محمد حامدپور دارابی استادیار، گروه فیزیک، دانشگاه هرمزگان، ایران علی اکبر بهمنی زاده دانشجوی کارشناسی ارشد، گروه فیزیک زمین، موسسه ژئوفیزیک دانشگاه تهران، ایران بهروز اسکوئی استادیار، گروه فیزیک زمین، موسسه ژئوفیزیک دانشگاه تهران، ایران

damavand volcano with 5671 m height from sea level which covers 400 square km of area is the highest peak in the middle east. it is located at 50 km to the east of capital city of tehran, iran. it is in the fumarolic stage and exemplifies ongoing quaternary volcanic activity. damavan volcano was influenced by regional tectonics during its history. allenbach (1966) believed that the volcano orig...

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