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Monte Arci
The Monte Arci is an isolated massif in the Uras plain in Campidano, south-western Sardinia, Italy. It is composed by three volcanic basalt towers, the highest one reaching an elevation of 812 m. The inner part of the massif is composed of trachyte. Monte Arci is located just west of the Giara di Gesturi, a basaltic plateau. Monte Arci had a relevant historical role in Sardinia due to the abundant presence of obsidian, which was used since prehistoric times for weapons and tools, and was later traded outside the island. There are also quarries of pearlite. In the territory of Morgongiori there are breeds of Giara horse The Giara horse ( Sardinian: ''Cuaddeddu de sa Jara'', it, Cavallino della Giara) is a horse breed native to the island of Sardinia. It is one of the fifteen indigenous horse "breeds of limited distribution" recognised by the AIA, the It ...s. {{Authority control Arci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Province Of Oristano
The province of Oristano ( it, provincia di Oristano, sc, provìntzia de Aristanis) is a province in the autonomous island region of Sardinia in Italy. Its capital is the city of Oristano. It has an area of , a total population of 160,746 (2016), and a population density of 53.7 people per square kilometer. There are 87 municipalities (''comuni'') in the province). It is bordered with on the north by Province of Sassari, on east by the Province of Nuoro, on south by the Province of South Sardinia and it is bathed from the Sea of Sardinia to the west. History The province of Oristano is the smallest province in Sardinia and was formed from sections of the provinces of Cagliari and Nuoro. It occupies roughly the same area as the Giudicato of Arborea of the High Middle Ages. It borders Nuoro, Cagliari and the Sea of Sardinia. A large area of the province's coastline is part of the gulf of Oristano, and the land in the province is mainly flat and there is some marshland. The prov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sardinia
Sardinia ( ; it, Sardegna, label=Italian, Corsican and Tabarchino ; sc, Sardigna , sdc, Sardhigna; french: Sardaigne; sdn, Saldigna; ca, Sardenya, label=Algherese and Catalan) is the second-largest island in the Mediterranean Sea, after Sicily, and one of the 20 regions of Italy. It is located west of the Italian Peninsula, north of Tunisia and immediately south of the French island of Corsica. It is one of the five Italian regions with some degree of domestic autonomy being granted by a special statute. Its official name, Autonomous Region of Sardinia, is bilingual in Italian and Sardinian: / . It is divided into four provinces and a metropolitan city. The capital of the region of Sardinia — and its largest city — is Cagliari. Sardinia's indigenous language and Algherese Catalan are referred to by both the regional and national law as two of Italy's twelve officially recognized linguistic minorities, albeit gravely endangered, while the regional law provides ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uras, Sardinia
Uras is a ''comune'' (municipality) in the Province of Oristano in the Italian region Sardinia, located about northwest of Cagliari and about southeast of Oristano. As of 8 July 2022, it had a population of 2,714 and an area of .All demographics and other statistics: Italian statistical institute Istat The Italian National Institute of Statistics ( it, Istituto nazionale di statistica; Istat) is the main producer of official statistics in Italy. Its activities include the census of population, economic censuses and a number of social, economic .... Uras borders the following municipalities: Marrubiu, Masullas, Mogoro, Morgongiori, San Nicolò d'Arcidano, Terralba. Demographic evolution Colors= id:lightgrey value:gray(0.9) id:darkgrey value:gray(0.8) id:sfondo value:rgb(1,1,1) id:barra value:rgb(0.6,0.7,0.8) ImageSize = width:500 height:250 PlotArea = left:50 bottom:50 top:30 right:30 DateFormat = x.y Period = from:0 till:3500 TimeAxis = orient ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Campidano
Campidano ( sc, Campidànu) is a plain located in South-Western Sardinia (Italy), covering approximately 100 kilometres between Cagliari and Oristano. Geography Geologically, it is a graben, a tectonic structure formed in the mid-Pliocene/early Pleistocene (4 to 2 million years ago). Later it was subject to large sedimentary deposition phenomena, creating an overall thickness of 600 m of sediments. The plain is crossed by the Tirso River, the longest in Sardinia. History Agriculture has been successful in Campidano since the Neolithic, continuing on through the Punic and the Romans, who cultivated here grains and grape. Dams of the large Sardinian rivers nourish the artichoke and wheat cultures, also typical products of this zone. Paddy fields are present near Oristano. The Sardinians from this area, and by extension all the people inhabiting the lowlands of Southern Sardinia, are called Campidanese ( sc, Campidanesus, it, Campidanesi). See also *Province of South Sar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Italy
Italy ( it, Italia ), officially the Italian Republic, ) or the Republic of Italy, is a country in Southern Europe. It is located in the middle of the Mediterranean Sea, and its territory largely coincides with the homonymous geographical region. Italy is also considered part of Western Europe, and shares land borders with France, Switzerland, Austria, Slovenia and the enclaved microstates of Vatican City and San Marino. It has a territorial exclave in Switzerland, Campione. Italy covers an area of , with a population of over 60 million. It is the third-most populous member state of the European Union, the sixth-most populous country in Europe, and the tenth-largest country in the continent by land area. Italy's capital and largest city is Rome. Italy was the native place of many civilizations such as the Italic peoples and the Etruscans, while due to its central geographic location in Southern Europe and the Mediterranean, the country has also historicall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Basalt
Basalt (; ) is an aphanitic (fine-grained) extrusive igneous rock formed from the rapid cooling of low-viscosity lava rich in magnesium and iron (mafic lava) exposed at or very near the surface of a rocky planet or moon. More than 90% of all volcanic rock on Earth is basalt. Rapid-cooling, fine-grained basalt is chemically equivalent to slow-cooling, coarse-grained gabbro. The eruption of basalt lava is observed by geologists at about 20 volcanoes per year. Basalt is also an important rock type on other planetary bodies in the Solar System. For example, the bulk of the plains of Venus, which cover ~80% of the surface, are basaltic; the lunar maria are plains of flood-basaltic lava flows; and basalt is a common rock on the surface of Mars. Molten basalt lava has a low viscosity due to its relatively low silica content (between 45% and 52%), resulting in rapidly moving lava flows that can spread over great areas before cooling and solidifying. Flood basalts are t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trachyte
Trachyte () is an extrusive igneous rock composed mostly of alkali feldspar. It is usually light-colored and aphanitic (fine-grained), with minor amounts of mafic minerals, and is formed by the rapid cooling of lava enriched with silica and alkali metals. It is the volcanic equivalent of syenite. Trachyte is common wherever alkali magma is erupted, including in late stages of ocean island volcanismMacDonald 1983, pp. 51-52 and in continental rift valleys, above mantle plumes,Philpotts and Ague 2009, pp. 390-394 and in areas of back-arc extension. Trachyte has also been found in Gale crater on Mars. Trachyte has been used as decorative building stone and was extensively used as dimension stone in the Roman Empire and the Republic of Venice. Chemical composition Trachyte has a silica content of 60 to 65% and an alkali oxide content of over 7%. This gives it less SiO2 than rhyolite and more (Na2O plus K2O) than dacite. These chemical differences are consistent with the posi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Giara Di Gesturi
The Giara di Gesturi, sc, Sa Jara Manna, is a high, steep-sided basaltic plateau which extends for about in the districts (comuni) of Gesturi, Tuili and Setzu in the province of Medio Campidano, and Genoni in the province of Oristano, in the southern central part of the island of Sardinia, Italy. The plateau was formed some 2.7 million years ago when lava from the cones of Zepparedda () and Zeppara Manna () covered older sedimentary rock. The average height of the plateau is approximately ; it is accessible in only a few places, known as ''scalas'' ("stairs, ladders"). Along the perimeter of the plateau are the remains of 23 Nuraghi; the Nuraghic complex of Su Nuraxi di Barumini is a few kilometres to the south. Monte Arci, another basaltic geological formation, is located to the west of the Giara di Gesturi. The surface of the Giara di Gesturi has a number of shallow depressions, sc, paulis, some of which are deep enough to hold water year round; the largest of these ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Obsidian
Obsidian () is a naturally occurring volcanic glass formed when lava extruded from a volcano cools rapidly with minimal crystal growth. It is an igneous rock. Obsidian is produced from felsic lava, rich in the lighter elements such as silicon, oxygen, aluminium, sodium, and potassium. It is commonly found within the margins of rhyolitic lava flows known as obsidian flows. These flows have a high content of silica, granting them a high viscosity. The high viscosity inhibits diffusion of atoms through the lava, which inhibits the first step ( nucleation) in the formation of mineral crystals. Together with rapid cooling, this results in a natural glass forming from the lava. Obsidian is hard, brittle, and amorphous; it therefore fractures with sharp edges. In the past, it was used to manufacture cutting and piercing tools, and it has been used experimentally as surgical scalpel blades. Origin and properties The '' Natural History'' by the Roman writer Pliny the Elder inc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pearlite
Pearlite is a two-phased, lamellar (or layered) structure composed of alternating layers of ferrite (87.5 wt%) and cementite (12.5 wt%) that occurs in some steels and cast irons. During slow cooling of an iron-carbon alloy, pearlite forms by a eutectoid reaction as austenite cools below (the eutectoid temperature). Pearlite is a microstructure occurring in many common grades of steels. The eutectoid composition of austenite is approximately 0.8% carbon; steel with less carbon content ( hypoeutectoid steel) will contain a corresponding proportion of relatively pure ferrite crystallites that do not participate in the eutectoid reaction and cannot transform into pearlite. Likewise steels with higher carbon content ( hypereutectoid steels) will form cementite before reaching the eutectoid point. The proportion of ferrite and cementite forming above the eutectoid point can be calculated from the iron/iron—carbide equilibrium phase diagram using the lever rule. Steels wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morgongiori
Morgongiori ( sc, Mragaxòri) is a ''comune'' (municipality) in the Province of Oristano in the Italian region Sardinia, located about northwest of Cagliari and about southeast of Oristano on the southern slopes of Monte Arci. Morgongiori borders the following municipalities: Ales, Curcuris, Marrubiu, Masullas, Pompu, Santa Giusta, Siris Siris may refer to: Geography *Siris (Magna Graecia), an ancient city in southern Italy *Serres, a city in Macedonia called Siris by the Ancient Greek historian Herodotus * Siris, Sardinia, an Italian commune *Sinni (river) (Siris in Latin), Italy ..., Uras. References Cities and towns in Sardinia {{Sardinia-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Giara Horse
The Giara horse ( Sardinian: ''Cuaddeddu de sa Jara'', it, Cavallino della Giara) is a horse breed native to the island of Sardinia. It is one of the fifteen indigenous horse "breeds of limited distribution" recognised by the AIA, the Italian breeders' association. While of small size due to the hostile environment in which it lives, and sometimes called a "pony," it is considered a true horse."Cavallino della Giara" Sardegna Agricoltura. IL SISTEMA AGRICOLO DELLA SARDEGNA. (official Sardinian Regional Administration page)(Italian) Accessed web page 12 March 2011 ...
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