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Riotinto-Nerva Mining Basin
The Riotinto-Nerva mining basin is a Spanish mining area located in the northeast of the province of Huelva (Andalusia), which has its main population centers in the municipalities of El Campillo, Huelva, El Campillo, Minas de Ríotinto, Minas de Riotinto and Nerva, Spain, Nerva, in the region of the Cuenca Minera (Huelva), Cuenca Minera. It is also part of the Iberian Pyrite Belt. Historically, this area has been exploited for mining purposes, and a major industrial complex was established in contemporary times. Although there is evidence of this type of activity in the area during Protohistory, protohistoric times, it was not until Hispania, Roman times when an organized exploitation of its deposits took place. After the activity of the mines was resumed in the Modern era, Modern Age, the Riotinto basin experienced its peak between the end of the 19th century and the middle of the 20th century under the management of the British Rio Tinto Company Limited. A significant industri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corta Atalaya
Corta Atalaya is the largest open-pit mine in EuropeEmed Mining gestiona reapertura al turismo de Corta Atalaya en mina Riotinto eleconomista.es, 2007-12-09. Retrieved 2010-01-06. and was at one time the largest in the world. It is located within the city limits of Minas de Riotinto in the of , [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyrite
The mineral pyrite (), or iron pyrite, also known as fool's gold, is an iron sulfide with the chemical formula Iron, FeSulfur, S2 (iron (II) disulfide). Pyrite is the most abundant sulfide mineral. Pyrite's metallic Luster (mineralogy), luster and pale brass-yellow hue give it a superficial resemblance to gold, hence the well-known nickname of ''fool's gold''. The color has also led to the nicknames ''brass'', ''brazzle'', and ''Brazil'', primarily used to refer to pyrite found in coal. The name ''pyrite'' is derived from the Greek language, Greek (), 'stone or mineral which strikes fire', in turn from (), 'fire'. In ancient Roman times, this name was applied to several types of stone that would create sparks when struck against steel; Pliny the Elder described one of them as being brassy, almost certainly a reference to what we now call pyrite. By Georgius Agricola's time, , the term had become a generic term for all of the pyrite group, sulfide minerals. Pyrite is usua ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rio Tinto (river)
The Río Tinto (, ''red river'' or Tinto River) is a river in southwestern Spain that rises in the Sierra Morena mountains of Andalusia. It flows generally south-southwest, reaching the Gulf of Cádiz at Huelva. The Rio Tinto river has a unique red and orange colour derived from its chemical makeup that is extremely acidic and with very high levels of iron and heavy metals. The river maintains its colour for an approximate length of 50 kilometres. After the 50 kilometre mark, the chemistry that makes the Rio Tinto river so unique appears to slowly decline, as does the odd colouring. The location where the chemistry of the river is altered is near a town called Niebla. The river's chemistry begins to significantly change following the town of Niebla owing to the fact that the Rio Tinto blends itself with other streams that are connected to the Atlantic Ocean. The river is approximately long and is located within the Iberian Pyrite Belt. This area has large amounts of ore and sul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guadalquivir
The Guadalquivir (, also , , ) is the fifth-longest river in the Iberian Peninsula and the second-longest river with its entire length in Spain. The Guadalquivir is the only major navigable river in Spain. Currently it is navigable from the Gulf of Cádiz to Seville, but in Roman times it was navigable to Córdoba. Geography The river is long and drains an area of about . It rises at Cañada de las Fuentes (village of Quesada) in the Cazorla mountain range ( Jaén), flows through Córdoba and Seville and reaches the sea at the fishing village of Bonanza, in Sanlúcar de Barrameda, flowing into the Gulf of Cádiz, in the Atlantic Ocean. The marshy lowlands at the river's mouth are known as " Las Marismas". The river borders the Doñana National Park reserve. Name The modern name of Guadalquivir comes from the Arabic ''al-wādī l-kabīr'' (), meaning "the big river". There was a variety of names for the Guadalquivir in Classical and pre-Classical times. According to Titus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isotope Analysis
Isotope analysis is the identification of isotopic signature, abundance of certain stable isotopes of chemical elements within organic and inorganic compounds. Isotopic analysis can be used to understand the flow of energy through a food web, to reconstruct past environmental and climatic conditions, to investigate human and animal diets, for food authentification, and a variety of other physical, geological, palaeontological and chemical processes. Stable isotope ratios are measured using mass spectrometry, which separates the different isotopes of an element on the basis of their mass-to-charge ratio. Tissues affected Isotopic oxygen is incorporated into the body primarily through ingestion at which point it is used in the formation of, for archaeological purposes, bones and teeth. The oxygen is incorporated into the hydroxylcarbonic apatite of bone and tooth enamel. Bone is continually remodelled throughout the lifetime of an individual. Although the rate of tur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bronze Age
The Bronze Age is a historic period, lasting approximately from 3300 BC to 1200 BC, characterized by the use of bronze, the presence of writing in some areas, and other early features of urban civilization. The Bronze Age is the second principal period of the three-age system proposed in 1836 by Christian Jürgensen Thomsen for classifying and studying ancient societies and history. An ancient civilization is deemed to be part of the Bronze Age because it either produced bronze by smelting its own copper and alloying it with tin, arsenic, or other metals, or traded other items for bronze from production areas elsewhere. Bronze is harder and more durable than the other metals available at the time, allowing Bronze Age civilizations to gain a technological advantage. While terrestrial iron is naturally abundant, the higher temperature required for smelting, , in addition to the greater difficulty of working with the metal, placed it out of reach of common use until the end o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chalcolithic
The Copper Age, also called the Chalcolithic (; from grc-gre, χαλκός ''khalkós'', "copper" and ''líthos'', "stone") or (A)eneolithic (from Latin '' aeneus'' "of copper"), is an archaeological period characterized by regular human manipulation of copper, but prior to the discovery of bronze alloys. Modern researchers consider the period as a subset of the broader Neolithic, but earlier scholars defined it as a transitional period between the Neolithic and the Bronze Age. The archaeological site of Belovode, on Rudnik mountain in Serbia, has the world's oldest securely dated evidence of copper smelting at high temperature, from (7000 BP). The transition from Copper Age to Bronze Age in Europe occurred between the late 5th and the late In the Ancient Near East the Copper Age covered about the same period, beginning in the late and lasting for about a millennium before it gave rise to the Early Bronze Age. Terminology The multiple names result from m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mina De Peña Del Hierro
Mina may refer to: Places Iran * Minaq, East Azerbaijan * Mina, Fars * Mineh, Lorestan Province * Mina, Razavi Khorasan * Mehneh, Razavi Khorasan Province United States * Mina, California * Mina, Nevada * Mina, New York * Mina, Ohio * Mina, South Dakota Ports * Al-Mina, a modern name given to an ancient coast settlement in Syria * El Mina, Lebanon, the original site of the harbor of the Phoenician city of Tripoli Elsewhere * Elmina, Ghana, a modern town which grew around the first European settlement in sub-Saharan Africa * Mina 3, Santa Cruz Province, Argentina * Mina, Burkina Faso, village in Balé Province, Burkina Faso * Mina, Iloilo, a municipality in Iloilo, Philippines * Mina, Nuevo León, a municipality in Nuevo León, Mexico * Mina, Saudi Arabia * Mina River (Indonesia) * Abu Dhabi Vegetable Market or Al Mina Fruit & Vegetable Market, Abu Dhabi, United Arab Emirates Languages * Hina language, a language of Cameroon * Gen language or Mina, the language of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Masa San Antonio
''Masa'' (or ''masa de maíz'') (; ) is a maize dough that comes from ground nixtamalized corn. It is used for making corn tortillas, ''gorditas'', ''tamales'', '' pupusas'', and many other Latin American dishes. It is dried and powdered into a flour form called ''masa harina''. Masa is reconstituted from masa harina by mixing with water before use in cooking. In Spanish, ''masa harina'' translates to "dough flour", which can refer to many other types of dough. Preparation Field corn grain is dried and then treated by cooking the mature, hard grain in a diluted solution of slaked lime (calcium hydroxide) or wood ash, and then letting it soak for many hours. The soaked maize is then rinsed thoroughly to remove the unpalatable flavor of the alkali. This process is nixtamalization, and it produces hominy, which is ground into a relatively dry dough to create fresh masa. The fresh masa can be sold or used directly, or can be dehydrated and blended into a powder to create masa har ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Masa San Dionisio
''Masa'' (or ''masa de maíz'') (; ) is a maize dough that comes from ground nixtamalized corn. It is used for making corn tortillas, ''gorditas'', ''tamales'', '' pupusas'', and many other Latin American dishes. It is dried and powdered into a flour form called ''masa harina''. Masa is reconstituted from masa harina by mixing with water before use in cooking. In Spanish, ''masa harina'' translates to "dough flour", which can refer to many other types of dough. Preparation Field corn grain is dried and then treated by cooking the mature, hard grain in a diluted solution of slaked lime (calcium hydroxide) or wood ash, and then letting it soak for many hours. The soaked maize is then rinsed thoroughly to remove the unpalatable flavor of the alkali. This process is nixtamalization, and it produces hominy, which is ground into a relatively dry dough to create fresh masa. The fresh masa can be sold or used directly, or can be dehydrated and blended into a powder to create masa har ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Masa Planes
''Masa'' (or ''masa de maíz'') (; ) is a maize dough that comes from ground nixtamalized corn. It is used for making corn tortillas, ''gorditas'', ''tamales'', '' pupusas'', and many other Latin American dishes. It is dried and powdered into a flour form called ''masa harina''. Masa is reconstituted from masa harina by mixing with water before use in cooking. In Spanish, ''masa harina'' translates to "dough flour", which can refer to many other types of dough. Preparation Field corn grain is dried and then treated by cooking the mature, hard grain in a diluted solution of slaked lime (calcium hydroxide) or wood ash, and then letting it soak for many hours. The soaked maize is then rinsed thoroughly to remove the unpalatable flavor of the alkali. This process is nixtamalization, and it produces hominy, which is ground into a relatively dry dough to create fresh masa. The fresh masa can be sold or used directly, or can be dehydrated and blended into a powder to create masa har ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
