1.
Shahnameh
The Shahnameh, transliterated as Shahnama, is a long epic poem written by the Persian poet Ferdowsi between c.977 and 1010 CE and is the national epic of Greater Iran. Consisting of some 50,000 distichs or couplets, the Shahnameh is the worlds longest epic poem written by a single poet. It tells mainly the mythical and to some extent the historical past of the Persian Empire from the creation of the world until the Islamic conquest of Persia in the 7th century. Modern Iran, Azerbaijan and the region influenced by the Persian culture celebrate this national epic. The work is of importance in Persian culture, regarded as a literary masterpiece. Ferdowsi started writing the Shahnameh in 977 A. D and completed it on 8 March 1010, the Shahnameh is a monument of poetry and historiography, being mainly the poetical recast of what Ferdowsi, his contemporaries, and his predecessors regarded as the account of Irans ancient history. Many such accounts already existed in prose, an example being the Abu-Mansuri Shahnameh, a small portion of Ferdowsis work, in passages scattered throughout the Shahnameh, is entirely of his own conception.
The Shahnameh is a poem of over 50,000 couplets. It is based mainly on a work of the same name compiled in Ferdowsis earlier life in his native Tus. The Xwadāynāmag contained historical information on the Sassanid period, Ferdowsi added material continuing the story to the overthrow of the Sassanids by the Arabs in the middle of the 7th century. These verses, which deal with the rise of the prophet Zoroaster, were incorporated by Ferdowsi, with acknowledgment. The style of the Shahnameh shows characteristics of written and oral literature. Some claim that Ferdowsi used Zoroastrian nasks, such as the now-lost Chihrdad, the text is written in the late Middle Persian, which was the immediate ancestor of Modern Persian. According to one account of the sources, a Persian named Dehqan in the court of King Anushehrawan Dadgar had composed a book in prose form. After the fall of the Iranian Empire, Khoday Nameh came into the possession of King Yaqub Lais and the Samani king Nuh ordered the poet Daqiqi to complete it, Ferdowsi obtained the book through a friend.
The work is not precisely chronological, but there is a movement through time. Some of the characters live for hundreds of years but most have normal life spans, there are many shāhs who come and go, as well as heroes and villains, who come and go. The only lasting images are those of Greater Persia itself, and of a succession of sunrises and sunsets, the work is divided into three successive parts, the mythical and historical ages
2.
Zoroastrianism
Ascribed to the teachings of the Iranian prophet Zoroaster, it exalts a deity of wisdom, Ahura Mazda, as its Supreme Being. Zoroastrianism was suppressed from the 7th century onwards following the Muslim conquest of Persia of 633-654, recent estimates place the current number of Zoroastrians at around 2.6 million, with most living in India and in Iran. Besides the Zoroastrian diaspora, the older Mithraic faith Yazdânism is still practised amongst Kurds, the religious philosophy of Zoroaster divided the early Iranian gods of Proto-Indo-Iranian tradition. The most important texts of the religion are those of the Avesta, in Zoroastrianism, the creator Ahura Mazda, through the Spenta Mainyu is an all-good father of Asha, in opposition to Druj and no evil originates from him. He and his works are evident to humanity through the six primary Amesha Spentas, Spenta Mainyu adjoined unto truth oppose the Spirits opposite, Angra Mainyu and its forces born of Akəm Manah. In Zoroastrianism, the purpose in life is to be among those who renew the world. to make the progress towards perfection.
Its basic maxims include, Hukhta, which mean, Good Thoughts, Good Words, there is only one path and that is the path of Truth. Do the right thing because it is the thing to do. The full name by which Zoroaster addressed the deity is, The Lord Creator and he proclaimed that there is only one God, the singularly creative and sustaining force of the Universe. He stated that human beings are given a right of choice, Zoroasters teachings focused on responsibility, and did not introduce a devil per se. The contesting force to Ahura Mazda was called Angra Mainyu, or angry spirit, post-Zoroastrian scripture introduced the concept of Ahriman, the Devil, which was effectively a personification of Angra Mainyu. The name Zoroaster is a Greek rendering of the name Zarathustra and he is known as Zartosht and Zardosht in Persian and Zaratosht in Gujarati. The Zoroastrian name of the religion is Mazdayasna, which combines Mazda- with the Avestan language word yasna, meaning worship, in English, an adherent of the faith is commonly called a Zoroastrian or a Zarathustrian.
An older expression still used today is Behdin, meaning The best Religion | Beh < Middle Persian Weh + Din < Middle Persian dēn < Avestan Daēnā. In Zoroastrian liturgy the term is used as a title for an individual who has formally inducted into the religion in a Navjote ceremony. The term Mazdaism /ˈmæzdə. ɪzəm/ is a typical 19th century construct, taking Mazda- from the name Ahura Mazda, the March 2001 draft edition of the Oxford English Dictionary records an alternate form, perhaps derived from the French Mazdéisme, which first appeared in 1871. In older English sources, the terms Gheber and Gueber were used to refer to Zoroastrians, Zoroastrian philosophy is identified as having been known to Italian Renaissance Europe through an image of Zoroaster in Raphaels School of Athens by Giorgio Vasari in 1550. The Oxford English Dictionary records use of the term Zoroastrianism in 1874 in Archibald Sayces Principles of Comparative Philology, Zoroastrians believe that there is one universal, supreme god, Ahura Mazda, or the Wise Lord
3.
Permian
The Permian is a geologic period and system which spans 46.7 million years from the end of the Carboniferous Period 298.9 million years ago, to the beginning of the Triassic Period 252.2 Mya. It is the last period of the Paleozoic Era, the following Triassic Period belongs to the Mesozoic Era, the concept of the Permian was introduced in 1841 by geologist Sir Roderick Murchison, who named it after the city of Perm. The Permian witnessed the diversification of the early amniotes into the groups of the mammals, lepidosaurs. The world at the time was dominated by two known as Pangaea and Siberia, surrounded by a global ocean called Panthalassa. The Carboniferous rainforest collapse left behind vast regions of desert within the continental interior, who could better cope with these drier conditions, rose to dominance in place of their amphibian ancestors. The Permian ended with the Permian–Triassic extinction event, the largest mass extinction in Earths history, in which nearly 90% of marine species and it would take well into the Triassic for life to recover from this catastrophe.
Recovery from the Permian-Triassic extinction event was protracted, on land, the term Permian was introduced into geology in 1841 by Sir R. I. Murchison, president of the Geological Society of London, who identified typical strata in extensive Russian explorations undertaken with Edouard de Verneuil, the region now lies in the Perm Krai of Russia. This could have in part caused the extinctions of marine species at the end of the period by severely reducing shallow coastal areas preferred by many marine organisms. During the Permian, all the Earths major landmasses were collected into a supercontinent known as Pangaea. The Cimmeria continent rifted away from Gondwana and drifted north to Laurasia, a new ocean was growing on its southern end, the Tethys Ocean, an ocean that would dominate much of the Mesozoic Era. Large continental landmass interiors experience climates with extreme variations of heat and cold, deserts seem to have been widespread on Pangaea. Such dry conditions favored gymnosperms, plants with seeds enclosed in a cover, over plants such as ferns that disperse spores in a wetter environment.
The first modern trees appeared in the Permian, the climate in the Permian was quite varied. At the start of the Permian, the Earth was still in an Ice Age, glaciers receded around the mid-Permian period as the climate gradually warmed, drying the continents interiors. In the late Permian period, the drying continued although the temperature cycled between warm and cool cycles, Permian marine deposits are rich in fossil mollusks and brachiopods. By the close of the Permian, trilobites and a host of other groups became extinct. Terrestrial life in the Permian included diverse plants, arthropods, the period saw a massive desert covering the interior of Pangaea
4.
Granite
Granite is a common type of felsic intrusive igneous rock that is granular and phaneritic in texture. Granites can be white, pink, or gray in color. The word granite comes from the Latin granum, a grain, in reference to the structure of such a holocrystalline rock. By definition, granite is a rock with at least 20% quartz. The term granitic means granite-like and is applied to granite and a group of igneous rocks with similar textures and slight variations in composition. Occasionally some individual crystals are larger than the groundmass, in case the texture is known as porphyritic. A granitic rock with a texture is known as a granite porphyry. Granitoid is a general, descriptive field term for lighter-colored, coarse-grained igneous rocks, petrographic examination is required for identification of specific types of granitoids. The extrusive igneous rock equivalent of granite is rhyolite, Granite is nearly always massive and tough, and therefore it has gained widespread use throughout human history, and more recently as a construction stone.
The average density of granite is between 2.65 and 2.75 g/cm3, its compressive strength usually lies above 200 MPa, and its viscosity near STP is 3–6 •1019 Pa·s. The melting temperature of dry granite at ambient pressure is 1215–1260 °C, it is reduced in the presence of water. Granite has poor primary permeability, but strong secondary permeability, true granite according to modern petrologic convention contains both plagioclase and alkali feldspars. When a granitoid is devoid or nearly devoid of plagioclase, the rock is referred to as alkali feldspar granite, when a granitoid contains less than 10% orthoclase, it is called tonalite and amphibole are common in tonalite. A granite containing both muscovite and biotite micas is called a binary or two-mica granite, two-mica granites are typically high in potassium and low in plagioclase, and are usually S-type granites or A-type granites. A worldwide average of the composition of granite, by weight percent, based on 2485 analyses. Much of it was intruded during the Precambrian age, it is the most abundant basement rock that underlies the relatively thin veneer of the continents.
Outcrops of granite tend to form tors and rounded massifs, granites sometimes occur in circular depressions surrounded by a range of hills, formed by the metamorphic aureole or hornfels. Granite often occurs as small, less than 100 km² stock masses
5.
Iran
Iran, known as Persia, officially the Islamic Republic of Iran, is a sovereign state in Western Asia. Comprising a land area of 1,648,195 km2, it is the second-largest country in the Middle East, with 82.8 million inhabitants, Iran is the worlds 17th-most-populous country. It is the country with both a Caspian Sea and an Indian Ocean coastline. The countrys central location in Eurasia and Western Asia, and its proximity to the Strait of Hormuz, Tehran is the countrys capital and largest city, as well as its leading economic and cultural center. Iran is the site of to one of the worlds oldest civilizations, the area was first unified by the Iranian Medes in 625 BC, who became the dominant cultural and political power in the region. The empire collapsed in 330 BC following the conquests of Alexander the Great, under the Sassanid Dynasty, Iran again became one of the leading powers in the world for the next four centuries. Beginning in 633 AD, Arabs conquered Iran and largely displaced the indigenous faiths of Manichaeism and Zoroastrianism by Islam, Iran became a major contributor to the Islamic Golden Age that followed, producing many influential scientists, scholars and thinkers.
During the 18th century, Iran reached its greatest territorial extent since the Sassanid Empire, through the late 18th and 19th centuries, a series of conflicts with Russia led to significant territorial losses and the erosion of sovereignty. Popular unrest culminated in the Persian Constitutional Revolution of 1906, which established a monarchy and the countrys first legislative body. Following a coup instigated by the U. K. Growing dissent against foreign influence and political repression led to the 1979 Revolution, Irans rich cultural legacy is reflected in part by its 21 UNESCO World Heritage Sites, the third-largest number in Asia and 11th-largest in the world. Iran is a member of the UN, ECO, NAM, OIC. Its political system is based on the 1979 Constitution which combines elements of a democracy with a theocracy governed by Islamic jurists under the concept of a Supreme Leadership. A multicultural country comprising numerous ethnic and linguistic groups, most inhabitants are Shia Muslims, the largest ethnic groups in Iran are the Persians, Azeris and Lurs.
Historically, Iran has been referred to as Persia by the West, due mainly to the writings of Greek historians who called Iran Persis, meaning land of the Persians. As the most extensive interactions the Ancient Greeks had with any outsider was with the Persians, Persis was originally referred to a region settled by Persians in the west shore of Lake Urmia, in the 9th century BC. The settlement was shifted to the end of the Zagros Mountains. In 1935, Reza Shah requested the international community to refer to the country by its native name, opposition to the name change led to the reversal of the decision, and Professor Ehsan Yarshater, editor of Encyclopædia Iranica, propagated a move to use Persia and Iran interchangeably
6.
Summit
A summit is a point on a surface that is higher in elevation than all points immediately adjacent to it. Mathematically, a summit is a maximum in elevation. The topographic terms acme, apex and zenith are synonymous, the UIAA definition is that a summit is independent if it has a prominence of 30 metres or more, it is a mountain if it has a prominence of at least 300 metres. This can be summarised as follows, A pyramidal peak is an exaggerated form produced by ice erosion of a mountain top, Summit may refer to the highest point along a line, trail, or route. In many parts of the western United States, the term refers to the highest point along a road, highway. For example, the highest point along Interstate 80 in California is referred to as Donner Summit while the highest point on Interstate 5 is Siskiyou Mountain Summit, geoid Hill List of highest mountains Maxima and minima Nadir Summit accordance Peak finder
7.
Greater Khorasan
Khorasan is a historical region lying in the northeast of Persia. Khorasan in its proper sense comprised principally the cities of Balkh and Herat and Nishapur, Merv and Nisa, and Bukhara and Samarkand. Some believe that at certain times Khorasan covered an area, which included parts of Transoxiana, Sistan. Sources from the 14th to the 16th century report that areas in the south of the Hindu Kush mountain range formed a frontier between Khorasan and Hindustan, in the Islamic period, Persian Iraq and Khorasan were the two important territories. The boundary between these two was the surrounding the cities of Gurgan and Qumis. In particular, the Ghaznavids and Timurids divided their empires into Iraqi, the adjective Greater is added these days to distinguish the historical region from the Khorasan Province of Iran, which roughly encompassed the western half of the historical Greater Khorasan. The name Khorāsān is derived from Middle Persian Khwarāsān, a compound of khwar, thus the name Khorasan means land where the sun rises or east.
The Persian word Khāvar-zamīn, meaning the land, has been used as an equivalent term. First established as an entity by the Sassanids, the borders of the region have varied considerably during its 1. Initially the Khorasan province of Sassanid empire included the cities of Nishapur, Merv, Taloqan, Bukhara, Abiward, Tus or Susia and Gurgan. It acquired its greatest extent under the Caliphs, for whom Khorasan was the name of one of the three political zones under their dominion. Under the Umayyad and Abbasid caliphates, Khorasan was divided into four sections or quarters, each section based on a single major city, Merv, Herat. In the Middle Ages, the term was applied in Persia to all its territories that lay east and north east of Dasht-e Kavir. Ghobar uses the terms Proper Khorasan and Improper Khorasan in his book to distinguish between the usage of Khorasan in its sense and its usage in a loose sense. Improper Khorasans boundaries extended to as far as Hazarajat and Kabul in the east and Baluchistan in the south and Khwarezm in the north, and Damghan and Gorgan in the west.
It is mentioned in the Memoirs of Babur that, The people of Hindustān call every country beyond their own Khorasān, in the manner as the Arabs term all except Arabia. On the road between Hindustān and Khorasān, there are two great marts, the one Kābul, the other Kandahār. Caravans, from Ferghāna, Tūrkestān, Balkh, Bokhāra, Hissār and this country lies between Hindustān and Khorasān
8.
Eocene
The Eocene Epoch, lasting from 56 to 33.9 million years ago, is a major division of the geologic timescale and the second epoch of the Paleogene Period in the Cenozoic Era. 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 period in which the concentration of the carbon isotope 13C in the atmosphere was exceptionally low in comparison with the more common isotope 12C. As with other periods, the strata that define the start and end of the epoch are well identified. The name Eocene comes from the Ancient Greek ἠώς and καινός, the Eocene epoch is conventionally divided into early and late subdivisions. The corresponding rocks are referred to as lower, the Ypresian stage constitutes the lower, the Priabonian stage the upper, and the Lutetian and Bartonian stages are united as the middle Eocene. The Eocene Epoch contained a variety of different climate conditions that includes the warmest climate in the Cenozoic Era.
During this period of time, little to no ice was present on Earth with a difference in temperature from the equator to the poles. Following the maximum was a descent into an icehouse climate from the Eocene Optimum to the Eocene-Oligocene transition at 34 million years ago. During this decrease ice began to reappear at the poles, greenhouse gases, in particular carbon dioxide and methane, played a significant role during the Eocene in controlling the surface temperature. For the early Eocene there is discussion on how much carbon dioxide was in the atmosphere. This is due to numerous proxies representing different atmospheric carbon dioxide content, for contrast, today the carbon dioxide levels are at 400 ppm or 0. 04%. At about the beginning of the Eocene Epoch the amount of oxygen in the atmosphere more or less doubled. During the early Eocene, methane was another gas that had a drastic effect on the climate. In comparison to carbon dioxide, methane has much effect on temperature as methane is ~34 times more effective per molecule than carbon dioxide on a 100-year scale.
Most of the methane released to the atmosphere during this period of time would have been from wetlands, the atmospheric methane concentration today is 0. 000179% or 1.79 ppmv. Due to the climate and sea level rise associated with the early Eocene, more wetlands, more forests. Comparing the early Eocene production of methane to current levels of atmospheric methane, biogenic production of methane produces carbon dioxide and water vapor along with the methane, as well as yielding infrared radiation
9.
Caspian Sea
The Caspian Sea is the largest enclosed inland body of water on Earth by area, variously classed as the worlds largest lake or a full-fledged sea. It is in a basin located between Europe and Asia. It is bounded by Kazakhstan to the northeast, Russia to the northwest, Azerbaijan to the west, Iran to the south, the Caspian Sea lies to the east of the Caucasus Mountains and to the west of the vast steppe of Central Asia. In its northern part, the Caspian Depression lies 28 to 130 m below sea level, the sea bed in the southern part reaches as low as 1023 m below sea level, which is the second lowest natural depression on earth after Lake Baikal. The ancient inhabitants of its coast perceived the Caspian Sea as an ocean, probably because of its saltiness, the sea has a surface area of 371,000 km2 and a volume of 78,200 km3. It has a salinity of approximately 1. 2%, about a third of the salinity of most seawater, the word Caspian is derived from the name of the Caspi, an ancient people who lived to the southwest of the sea in Transcaucasia.
Strabo wrote that to the country of the Albanians belongs the territory called Caspiane, which was named after the Caspian tribe, as was the sea, but the tribe has now disappeared. Moreover, the Caspian Gates, which is the name of a region in Irans Tehran province, the Iranian city of Qazvin shares the root of its name with that of the sea. In fact, the traditional Arabic name for the sea itself is Bahr al-Qazwin, in classical antiquity among Greeks and Persians it was called the Hyrcanian Ocean. In Persian antiquity, as well as in modern Iran, it is known as the دریای خزر, Daryā-e Khazar, ancient Arabic sources refer to it as Baḥr Gīlān meaning the Gilan Sea. Turkic languages refer to the lake as Khazar Sea, in Turkmen, the name is Hazar deňizi, in Azeri, it is Xəzər dənizi, and in modern Turkish, it is Hazar denizi. An exception is Kazakh, where it is called Каспий теңізі, old Russian sources call it the Khvalyn or Khvalis Sea after the name of Khwarezmia. In modern Russian, it is called Каспи́йское мо́ре, Kaspiyskoye more, the Caspian Sea, like the Black Sea, Namak Lake, and Lake Urmia, is a remnant of the ancient Paratethys Sea.
It became landlocked about 5.5 million years ago due to tectonic uplift and a fall in sea level. Due to the current inflow of water, the Caspian Sea is a freshwater lake in its northern portions, and is most saline on the Iranian shore. Currently, the salinity of the Caspian is one third that of Earths oceans. The Caspian Sea is the largest inland body of water in the world, the coastlines of the Caspian are shared by Azerbaijan, Kazakhstan and Turkmenistan. The Caspian is divided into three distinct regions, the Northern and Southern Caspian
10.
Mesozoic
The Mesozoic Era is an interval of geological time from about 252 to 66 million years ago. This Era is called from a paleobotanist view the Age of Conifers, Mesozoic means middle life, deriving from the Greek prefix meso-/μεσο- for between and zōon/ζῷον meaning animal or living being. It is one of three eras of the Phanerozoic Eon, preceded by the Paleozoic and succeeded by the Cenozoic. The era is subdivided into three periods, the Triassic and Cretaceous, which are further subdivided into a number of epochs. The Mesozoic was a time of significant tectonic and evolutionary activity, the era witnessed the gradual rifting of the supercontinent Pangaea into separate landmasses that would eventually move into their current positions. The climate of the Mesozoic was varied, alternating between warming and cooling periods, however, the Earth was hotter than it is today. Birds first appeared in the Jurassic, having evolved from a branch of theropod dinosaurs, the first mammals appeared during the Mesozoic, but would remain small—less than 15 kg —until the Cenozoic.
Following the Paleozoic, the Mesozoic extended roughly 186 million years and this time frame is separated into three geologic periods. It is known as the Great Dying because it is considered the largest mass extinction in the Earths history, the upper boundary of the Mesozoic is set at the Cretaceous–Paleogene extinction event, which may have been caused by the impactor that created Chicxulub Crater on the Yucatán Peninsula. Towards the Late Cretaceous large volcanic eruptions are believed to have contributed to the Cretaceous–Paleogene extinction event. Approximately 50% of all genera became extinct, including all of the non-avian dinosaurs, the Triassic ranges roughly from 252 million to 201 million years ago. The Triassic is a time in Earths history bracketed between the Permian Extinction and the Triassic–Jurassic extinction event, two of the big five, and precedes the Jurassic Period and it has three major epochs, the Early Triassic, the Middle Triassic and the Late Triassic. The Early Triassic was between about 252 million to 247 million years ago and was dominated by deserts as Pangaea had not yet broken up, thus the interior was nothing, the Earth had just witnessed a massive die-off in which 95% of all life became extinct.
The most common life on earth were Lystrosaurus, labyrinthodonts. Temnospondyls evolved during this time and would be the dominant predator for much of the Triassic, the Middle Triassic spans roughly from 247 million to 237 million years ago. The Middle Triassic featured the beginnings of the breakup of Pangaea, the ecosystem had recovered from the devastation that was the Great Dying. Algae, sponge and crustaceans all had recovered, new aquatic reptiles evolved, such as ichthyosaurs and nothosaurs. Meanwhile, on land, pine forests flourished, as did groups of insects like mosquitoes, the first ancient crocodilians evolved, which sparked competition with the large amphibians that had since ruled the freshwater world
11.
Jurassic
The Jurassic is a geologic period and system that spans 56.3 million years from the end of the Triassic Period 201.3 million years ago to the beginning of the Cretaceous Period 145 Mya. The Jurassic constitutes the middle period of the Mesozoic Era, known as the Age of Reptiles, the start of the period is marked by the major Triassic–Jurassic extinction event. The Jurassic is named after the Jura Mountains within the European Alps, by the beginning of the Jurassic, the supercontinent Pangaea had begun rifting into two landmasses, Laurasia to the north and Gondwana to the south. This created more coastlines and shifted the continental climate from dry to humid, on land, the fauna transitioned from the Triassic fauna, dominated by both dinosauromorph and crocodylomorph archosaurs, to one dominated by dinosaurs alone. The first birds appeared during the Jurassic, having evolved from a branch of theropod dinosaurs, other major events include the appearance of the earliest lizards, and the evolution of therian mammals, including primitive placentals.
Crocodilians made the transition from a terrestrial to a mode of life. The oceans were inhabited by marine reptiles such as ichthyosaurs and plesiosaurs, the chronostratigraphic term Jurassic is directly linked to the Jura Mountains. The name Jura is derived from the Celtic root jor, which was Latinised into juria, the Jurassic period is divided into the Early Jurassic and Late Jurassic epochs. The Jurassic System, in stratigraphy, is divided into the Lower Jurassic, the separation of the term Jurassic into three sections goes back to Leopold von Buch. The Jurassic North Atlantic Ocean was relatively narrow, while the South Atlantic did not open until the following Cretaceous period, the Tethys Sea closed, and the Neotethys basin appeared. Climates were warm, with no evidence of glaciation, as in the Triassic, there was apparently no land over either pole, and no extensive ice caps existed. In contrast, the North American Jurassic record is the poorest of the Mesozoic, the Jurassic was a time of calcite sea geochemistry in which low-magnesium calcite was the primary inorganic marine precipitate of calcium carbonate.
Carbonate hardgrounds were thus very common, along with calcitic ooids, calcitic cements, the first of several massive batholiths were emplaced in the northern American cordillera beginning in the mid-Jurassic, marking the Nevadan orogeny. Important Jurassic exposures are found in Russia, South America, Australasia. As the Jurassic proceeded and more groups of dinosaurs like sauropods and ornithopods proliferated in Africa. Middle Jurassic strata are well represented nor well studied in Africa. Late Jurassic strata are poorly represented apart from the spectacular Tendaguru fauna in Tanzania, the Late Jurassic life of Tendaguru is very similar to that found in western North Americas Morrison Formation. During the Jurassic period, the primary living in the sea were fish
12.
Mount Damavand
Mount Damāvand, a potentially active volcano, is a stratovolcano which is the highest peak in Iran and the Middle East as well as the highest volcano in Asia. It has a place in Persian mythology and folklore. This peak is located in the middle of the Alborz range, adjacent to Varārū, Gol-e Zard, the mountain is located near the southern coast of the Caspian Sea, in Amol County, Mazandaran Province,66 kilometres northeast of the city of Tehran. Mount Damāvand is the 12th most prominent peak in the world, and it is the highest volcanic mountain in Asia, and part of the Volcanic Seven Summits mountaineering challenge. Damavand is a significant mountain in Persian mythology and it is the symbol of Iranian resistance against despotism and foreign rule in Persian poetry and literature. In Zoroastrian texts and mythology, the three-headed dragon Aži Dahāka was chained within Mount Damāvand, in a version of the same legend, the tyrant Zahhāk was chained in a cave somewhere in Mount Damāvand after being defeated by Kāveh and Fereydūn.
The mountain is said to hold magical powers in the Shahnameh, Damāvand has been named in the Iranian legend of Arash as the location from which the hero shot his magical arrow to mark the border of Iran, during the border dispute between Iran and Turan. The poem Damāvand by Mohammad Taqī Bahār is one example of the mountains significance in Persian literature. Mount Damavand first erupted in the Pleistocene almost 1.78 million years ago, after several known eruptions around 600,000 and 280,000 years ago, it finally erupted about 7300 years ago in the Holocene. Its steep cone is formed of ash and lava flows that are made of trachyte, andesite. The Quaternary lavas are located on the Jurassic sediments. The volcano is crowned by a crater with sulfuric deposits. There are fumaroles, hot springs, and mineral deposits of travertine, Mount Damavand could be considered as a potentially active volcano, because there are fumaroles near the summit crater emitting sulfur, which were known to be active on July 6,2007.
Mineral hot springs are located on the volcanos flanks and at the base. The most important of these hot springs are located in Abe Garm Larijan in a village by the name Larijan in the district of Larijan in Lar Valley, the water from this spring is useful in the treatment of chronic wounds and skin diseases. Near these springs there are public baths with small pools for public use, the best major settlement for mountain climbers is the new Iranian Mountain Federation Camp in the village of Polour, located on the south of the mountain. There are at least 16 known routes to the summit, with varying levels of difficulty, some of them are very dangerous and require rock climbing. The most popular route is the Southern Route which has step stamps, the longest route is the Northeastern and it takes two whole days to reach the summit starting from downhill village of Nāndal and a night stay at Takht-e Fereydoun, a two-story shelter
listen (help·info) Persian: البرز), also spelled as Alburz, Elburz or Elborz, is a mountain range in northern Iran that stretches from the border of Azerbaijan along the western and entire southern coast of the Caspian Sea and finally runs northeast and merges into the Aladagh Mountains in the northern parts of Khorasan. This mountain range is divided into Western, Central, and Eastern Alborz Mountains. The Western Alborz Range (usually called the Talysh) runs south-southeastward almost along the western coast of the Caspian Sea. The Central Alborz (the Alborz Mountains in the strictest sense) runs from west to east along the entire southern coast of the Caspian Sea, while the Eastern Alborz runs in a northeasterly direction towards the northern parts of the Khorasan region southeast of the Caspian Sea. Mount Damavand, the highest mountain in Iran measuring 5,610.0 m (18,405.5 ft), is located in the Central Alborz Mountains.
Media related to Alborz at Wikimedia Commons
