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Mount Marshenan
Mount Marshenan or Mount Mareshnan (‘Kuh-e Marshenan’ or ‘Kuh-e Mareshnan’) is a mountain that is located approximately 60 kilometres north-east of the city of Isfahan and 30 kilometres north of Kuhpayeh. With an elevation of 3330 metres, this mountain is about 15 kilometres south-east of Zefreh and 3 kilometres south of the village of Marshenan in Isfahan Province, almost in central Iran. Made chiefly of Eocene andesite and pyroclastic rocks, Mount Marshenan is situated in a central Iranian range, Sahand-Bazman volcanic range or belt, a mountain range which was formed mainly during Eocene volcanism and that stretches approximately from Sahand volcano in the north-west of Iran to Bazman volcano in the south-east of Iran.Geological Map of Iran, National Geoscience Database of Iran The National Geoscience Database of Iran or in brief NGDIR is a scientific and research government agency in Iran which works in the field of Geology of Iran and centrally manages Geoscience d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isfahan
Isfahan ( fa, اصفهان, Esfahân ), from its ancient designation ''Aspadana'' and, later, ''Spahan'' in middle Persian, rendered in English as ''Ispahan'', is a major city in the Greater Isfahan Region, Isfahan Province, Iran. It is located south of Tehran and is the capital of Isfahan Province. The city has a population of approximately 2,220,000, making it the third-largest city in Iran, after Tehran and Mashhad, and the second-largest metropolitan area. Isfahan is located at the intersection of the two principal routes that traverse Iran, north–south and east–west. Isfahan flourished between the 9th and 18th centuries. Under the Safavid dynasty, Isfahan became the capital of Persia, for the second time in its history, under Shah Abbas the Great. The city retains much of its history. It is famous for its Perso–Islamic architecture, grand boulevards, covered bridges, palaces, tiled mosques, and minarets. Isfahan also has many historical buildings, monuments, pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kuhpayeh
Kuhpayeh ( fa, كوهپايه, also Romanized as Kūhpāyeh, Kūhpāye and Koohpayeh; also known as Kūhpā and Qohpayeh) is a city and capital of Kuhpayeh District, in Isfahan County, Isfahan Province, Iran. At the 2011 census, its population was 4,587, in 1,335 families. Kuhpayeh is a historic city that located in east of Isfahan. The word "kuhpayeh" means "the foot of mountain" or " the base of mountain" and there are several cities and villages across Iran named "Kuhpayeh". The stoning of Soraya Manutchehri, a 35-year-old woman falsely accused of adultery on August 15, 1986, Kuhpayeh has a distinct language/dialect, known as "Velayati" or " Kuhpaye'i" and very similar "Gazi language Gazi is one of the Central Iranian varieties of Iran Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan an ...", which belongs to the north-western Ira ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zefreh, Isfahan
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Iran
Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan and Armenia to the northwest, by the Caspian Sea and Turkmenistan to the north, by Afghanistan and Pakistan to the east, and by the Gulf of Oman and the Persian Gulf to the south. It covers an area of , making it the 17th-largest country. Iran has a population of 86 million, making it the 17th-most populous country in the world, and the second-largest in the Middle East. Its largest cities, in descending order, are the capital Tehran, Mashhad, Isfahan, Karaj, Shiraz, and Tabriz. The country is home to one of the world's oldest civilizations, beginning with the formation of the Elamite kingdoms in the fourth millennium BC. It was first unified by the Medes, an ancient Iranian people, in the seventh century BC, and reached its territorial height in the sixth century BC, when Cyrus the Gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eocene
The Eocene ( ) Epoch is a geological epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period in the modern Cenozoic Era. The name ''Eocene'' comes from the Ancient Greek (''ēṓs'', " dawn") and (''kainós'', "new") and refers to the "dawn" of modern ('new') fauna that appeared during the epoch. The Eocene spans the time from the end of the Paleocene Epoch to the beginning of the Oligocene Epoch. The start of the Eocene is marked by a brief period in which the concentration of the carbon isotope 13C in the atmosphere was exceptionally low in comparison with the more common isotope 12C. The end is set at a major extinction event called the ''Grande Coupure'' (the "Great Break" in continuity) or the Eocene–Oligocene extinction event, which may be related to the impact of one or more large bolides in Siberia and in what is now Chesapeake Bay. As with other geologic periods, the strata that define the start and e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andesite
Andesite () is a volcanic rock of intermediate composition. In a general sense, it is the intermediate type between silica-poor basalt and silica-rich rhyolite. It is fine-grained (aphanitic) to porphyritic in texture, and is composed predominantly of sodium-rich plagioclase plus pyroxene or hornblende. Andesite is the extrusive equivalent of plutonic diorite. Characteristic of subduction zones, andesite represents the dominant rock type in island arcs. The average composition of the continental crust is andesitic. Along with basalts, andesites are a component of the Geology of Mars, Martian crust. The name ''andesite'' is derived from the Andes mountain range, where this rock type is found in abundance. It was first applied by Christian Leopold von Buch in 1826. Description Andesite is an aphanitic (fine-grained) igneous rock that is intermediate in its content of silica and low in alkali metals. It has less than 20% quartz and 10% feldspathoid by volume, with at least 6 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyroclastic Rock
Pyroclastic rocks (derived from the el, πῦρ, links=no, meaning fire; and , meaning broken) are clastic rocks composed of rock fragments produced and ejected by explosive volcanic eruptions. The individual rock fragments are known as pyroclasts. Pyroclastic rocks are a type of volcaniclastic deposit, which are deposits made predominantly of volcanic particles. 'Phreatic' pyroclastic deposits are a variety of pyroclastic rock that forms from volcanic steam explosions and they are entirely made of accidental clasts. 'Phreatomagmatic' pyroclastic deposits are formed from explosive interaction of magma with groundwater. Unconsolidated accumulations of pyroclasts are described as tephra. Tephra may become lithified to a pyroclastic rock by cementation or chemical reactions as the result of the passage of hot gases ( fumarolic alteration) or groundwater (e.g. hydrothermal alteration and diagenesis) and burial, or, if it is emplaced at temperatures so hot that the soft glassy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sahand
Sahand ( fa, سهند), is a massive, heavily eroded stratovolcano in East Azerbaijan Province, northwestern Iran. At , it is the highest mountain in the province of East Azarbaijan. Sahand is one of the highest mountains in Azerbaijan (Iran), Iranian Azerbaijan, in addition to being an important dormant volcano in the country. The Sahand mountains are directly south of Tabriz, the highest peak of which is Kamal at an elevation of . Approximately 17 peaks can be accounted for as being over in height. Due to the presence of a variety of flora and fauna, the Sahand mountains are known as the bride of mountains in Iran. The absolute dating of Sahand rocks indicates that this volcano has been sporadically active from 12 million years ago up to almost 0.14 million years ago. Sahand is made chiefly of dacite and associated felsic rocks. Winter sports Sahand Ski Resort is on the northern foothills of the mountain and near the city of Tabriz. In the complex the Sahand Skiing Stadium ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bazman
Bazman ( fa, بزمان, also known as Kuh-e Bazman) is a dormant stratovolcano in a remote desert region of Sistan and Baluchestan Province in south-eastern Iran. A 500-m-wide crater caps the summit of the dominantly andesitic- dacitic volcano, the flanks of which are covered by monogenetic centres especially to the northwest. Bazman is a geologically young volcano which formed mainly in the Quaternary, with the oldest dated rocks being 11.7 million years old and the youngest 0.6 million years. Although no historic eruptions have been reported from Bazman, it does contain fumaroles. Thus Bazman may be regarded as dormant, rather than extinct. Its satellite cones have been the source of basaltic lava flows. Bazman volcano is part of a volcanic arc in southeastern Iran, the Makran volcanic arc. At this arc, shallow subduction has generated an arc of volcanic activity which includes Bazman, Taftan and Koh-i-Sultan volcanoes. Bazman has been affected by heavy erosion. The fla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanism
Volcanism, vulcanism or volcanicity is the phenomenon of eruption of molten rock (magma) onto the Earth#Surface, surface of the Earth or a solid-surface planet or moon, where lava, pyroclastics, and volcanic gases erupt through a break in the surface called a vent. It includes all phenomena resulting from and causing magma within the crust (geology), crust or Mantle (geology), mantle of the body, to rise through the crust and form volcanic rocks on the surface. Magmas, that reach the surface and solidify, form extrusive landforms. Volcanic processes Magma from the mantle or lower crust rises through the crust towards the surface. If magma reaches the surface, its behavior depends on the viscosity of the molten constituent rock (geology), rock. Viscous (thick) magma produces volcanoes characterised by explosive eruptions, while non-viscous (runny) magma produce volcanoes characterised by effusive eruptions pouring large amounts of lava onto the surface. In some cases, rising mag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Geoscience Database Of Iran
The National Geoscience Database of Iran or in brief NGDIR is a scientific and research government agency in Iran which works in the field of Geology of Iran and centrally manages Geoscience data. This center was established in 1999 in the field of data collection authority with the aim of managing, preserving and sharing Geoscience data. History The core of the National Geoscience Database of Iran (NGDIR) was established in 1999 at the Geological Survey and Mineral Exploration of Iran and its main activities until 2000 is limited to collecting mineral information in the library of the organization and creating the first mineral database and collection and unification of map information in the Geological Survey and Mineral Exploration of Iran. In the same year, the creating of Geoscience Database task was assigned to the Ministry of Industries and Mines (Iran). Since then, the National Geoscience Database of Iran's structure became more independent and thematic development ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
