|
William Niven
William Niven (2 October 1850 – 2 June 1937) was a mineralogist and archeologist noted for his discovery of the minerals yttrialite, thorogummite, aguilarite and nivenite (named after him), as well as a set of controversial tablets. Originally from Scotland, Niven came to the United States in 1879, where he became heavily involved in mineralogy and mining. Mineral discoveries Niven's first major contribution to mineralogy occurred in 1889 while he was on an expedition to Llano County, Texas, on behalf of Thomas Edison. Niven was looking for the mineral gadolinite, which was used as a street lamp filament. It was on this expedition that he discovered three new minerals, yttrialite, thorogummite, and nivenite. In the 1890s, Niven discovered the mineral aguilarite while on an exploration trip to Mexico. He also found new deposits of rare minerals in New York and New Jersey. In Mexico Niven eventually became interested in archaeology through his travels to Mexic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bellshill
Bellshill (pronounced "Bells hill") is a town in North Lanarkshire in Scotland, southeast of Glasgow city centre and west of Edinburgh. Other nearby localities are Motherwell to the south, Hamilton, South Lanarkshire, Hamilton to the southwest, Viewpark to the west, Holytown to the east and Coatbridge to the north. The town of Bellshill itself (including the villages of Orbiston and Mossend) has a population of about 20,650. From 1996 to 2016, it was considered to be part of the Greater Glasgow metropolitan area; since then it is counted as part of a continuous List of towns and cities in Scotland, suburban settlement anchored by Motherwell with a total population of around 125,000. History The earliest record of Bellshill's name is handwritten on a map by Timothy Pont dated 1596 although the letters are difficult to distinguish. It's possible it reads Belſsill with the first s being an old-fashioned long s. The site is recorded as being east of "Uddingston, Vdinſtoun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gadolinite
Gadolinite, sometimes known as ytterbite, is a silicate mineral consisting principally of the silicates of cerium, lanthanum, neodymium, yttrium, beryllium, and iron with the formula . It is called gadolinite-(Ce) or gadolinite-(Y), depending on the prominent composing element (Y if yttrium predominates, and Ce if cerium). It may contain 35.5% yttria sub-group rare earths, 2.2% ceria earths, as much as to 11.6% BeO, and traces of thorium. It is found in Sweden, Norway, and the US (Texas and Colorado). Characteristics Gadolinite is fairly rare and typically occurs as well-formed crystals. It is nearly black in color and has a vitreous luster. The hardness is between 6.5 and 7 on the Mohs scale, and the specific gravity is between 4.0 and 4.7. It fractures in a conchoidal pattern and streaks grayish-green. It was also thought to exhibit pyrognomic properties, as it can emit visible light when heated to relatively low temperatures, but the scientific consensus is that this is the p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ludovic Mann
Ludovic is a given name and has also been a surname. People with the given name A * Ludovic Albós Cavaliere (born 1979), Andorran ski mountaineer * Ludovic Ambruș (born 1946), Romanian wrestler who competed in the 1972 Summer Olympics * Ludovic Arrachart (1897–1933), French aviator * Ludovic Assemoassa (born 1980), French-born Togolese football defender * Ludovic Asuar (born 1976), French footballer * Ludovic Auger (born 1971), French road bicycle racer * Ludovic Augustin (born 1902), Haitian Olympic sport shooter B * Ludovic Baal (born 1986), French Guianese football left back * Ludovic Batelli (born 1963), French football goalkeeper * Ludovic Blas (born 1997), French football midfielder * Ludovic Boi (born 1989), Mauritian-Australian footballer * Ludovic Booz (1940–2015), Haitian painter and sculptor * Ludovic Bource (born 1970), French composer * Ludovic Boulesteix (fl. 1990s), French slalom canoer * Ludovic Bruckstein (1920–1988), Romanian writer * Ludovic Bruni ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petroglyphs
A petroglyph is an image created by removing part of a rock surface by incising, picking, carving, or abrading, as a form of rock art. Outside North America, scholars often use terms such as "carving", "engraving", or other descriptions of the technique to refer to such images. Petroglyphs are found worldwide, and are often associated with prehistoric peoples. The word comes from the Greek prefix , from meaning "stone", and meaning "carve", and was originally coined in French as . Another form of petroglyph, normally found in literate cultures, a rock relief or rock-cut relief is a relief sculpture carved on "living rock" such as a cliff, rather than a detached piece of stone. While these relief carvings are a category of rock art, sometimes found in conjunction with rock-cut architecture, they tend to be omitted in most works on rock art, which concentrate on engravings and paintings by prehistoric or nonliterate cultures. Some of these reliefs exploit the rock's na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scandinavia
Scandinavia; Sámi languages: /. ( ) is a subregion#Europe, subregion in Northern Europe, with strong historical, cultural, and linguistic ties between its constituent peoples. In English usage, ''Scandinavia'' most commonly refers to Denmark, Norway, and Sweden. It can sometimes also refer more narrowly to the Scandinavian Peninsula (which excludes Denmark but includes part of Finland), or more broadly to include all of Finland, Iceland, and the Faroe Islands. The geography of the region is varied, from the Norwegian fjords in the west and Scandinavian mountains covering parts of Norway and Sweden, to the low and flat areas of Denmark in the south, as well as archipelagos and lakes in the east. Most of the population in the region live in the more temperate southern regions, with the northern parts having long, cold, winters. The region became notable during the Viking Age, when Scandinavian peoples participated in large scale raiding, conquest, colonization and trading mostl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mexico City
Mexico City ( es, link=no, Ciudad de México, ; abbr.: CDMX; Nahuatl: ''Altepetl Mexico'') is the capital and largest city of Mexico, and the most populous city in North America. One of the world's alpha cities, it is located in the Valley of Mexico within the high Mexican central plateau, at an altitude of . The city has 16 boroughs or ''demarcaciones territoriales'', which are in turn divided into neighborhoods or ''colonias''. The 2020 population for the city proper was 9,209,944, with a land area of . According to the most recent definition agreed upon by the federal and state governments, the population of Greater Mexico City is 21,804,515, which makes it the sixth-largest metropolitan area in the world, the second-largest urban agglomeration in the Western Hemisphere (behind São Paulo, Brazil), and the largest Spanish language, Spanish-speaking city (city proper) in the world. Greater Mexico City has a gross domestic product, GDP of $411 billion in 2011, which makes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aztec Triple Alliance
The Aztec Empire or the Triple Alliance ( nci, Ēxcān Tlahtōlōyān, jéːʃkaːn̥ t͡ɬaʔtoːˈlóːjaːn̥ was an alliance of three Nahua city-states: , , and . These three city-states ruled that area in and around the Valley of Mexico from 1428 until the combined forces of the Spanish and their native allies who ruled under defeated them in 1521. The alliance was formed from the victorious factions of a civil war fought between the city of and its former tributary provinces. Despite the initial conception of the empire as an alliance of three self-governed city-states, the capital became dominant militarily. By the time the Spanish arrived in 1519, the lands of the alliance were effectively ruled from , while other partners of the alliance had taken subsidiary roles. The alliance waged wars of conquest and expanded after its formation. The alliance controlled most of central Mexico at its height, as well as some more distant territories within Mesoamerica, such as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Azcapotzalco (altepetl)
Azcapotzalco was a pre-Columbian Nahua ''altepetl'' (state), capital of the Tepanec empire, in the Valley of Mexico, on the western shore of Lake Texcoco. The name ''Azcapotzalco'' means "at the anthill" in Nahuatl. Its inhabitants were called ''Azcapotzalca''. According to the 17th century annalist Chimalpahin, Azcapotzalco was founded by Chichimecs in the year 995 AD. The most famous ruler (''tlatoani'') of Azcapotzalco was Tezozomoctli. History According to chronicler Fernando Alva Ixtlilxóchitl, the Tepanecs were a Chichimec group that settled in 1012 in the region west of Lake Texcoco. Their lineage began when their Acolhua leader (or Acolnahuacatl) married Xolotl's daughter Cuetlaxochitzin. But this information is apocryphal, since Acolnahuacatl's life is considered to have occurred much later. Chimalpahin places their settlement before, in 995. In fact, archaeological investigations have revealed that Azcapotzalco was inhabited since the Classical period — around ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Azcapotzalco
Azcapotzalco ( nci, Āzcapōtzalco , , from ''wikt:azcapotzalli, āzcapōtzalli'' “anthill” + ''wikt:-co, -co'' “place”; literally, “In the place of the anthills”) is a Boroughs of Mexico City, borough (''demarcación territorial'') in Mexico City. Azcapotzalco is in the northwestern part of Mexico City. The town began in the pre-Hispanic era and was the seat of the Tepanec dominion until the Aztec Triple Alliance overthrew it. After that it was a rural farming area becoming part of the Federal District of Mexico City in the mid-19th century. In the 20th century the area was engulfed by the urban sprawl of Mexico City. Today it is 100% urbanized and is a center of industry. Geography and environment The municipality of Azcapotzalco is in the Valley of Mexico with its eastern half on the lakebed of the former Lake Texcoco and the west on more solid ground. The historic center is on the former shoreline of this lake. The average altitude is 2240 meters above sea level. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Valley Of Mexico
The Valley of Mexico ( es, Valle de México) is a highlands plateau in central Mexico roughly coterminous with present-day Mexico City and the eastern half of the State of Mexico. Surrounded by mountains and volcanoes, the Valley of Mexico was a centre for several pre-Columbian civilizations, including Teotihuacan, the Toltec, and the Aztec. The ancient Aztec term ('Land Between the Waters') and the phrase Basin of Mexico are both used at times to refer to the Valley of Mexico. The Basin of Mexico became a well known site that epitomized the scene of early Classic Mesoamerican cultural development as well. The Valley of Mexico is located in the Trans-Mexican Volcanic Belt. The valley contains most of the Greater Mexico City, Mexico City Metropolitan Area, as well as parts of the State of Mexico, Hidalgo (state), Hidalgo, Tlaxcala, and Puebla. The Basin of Mexico covers approximately in the NNE-SSW direction with length to width dimensions of approximately to The Valley of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mexican Revolution
The Mexican Revolution ( es, Revolución Mexicana) was an extended sequence of armed regional conflicts in Mexico from approximately 1910 to 1920. It has been called "the defining event of modern Mexican history". It resulted in the destruction of the Federal Army and its replacement by a revolutionary army, and the transformation of Mexican culture and Federal government of Mexico, government. The northern Constitutionalists in the Mexican Revolution, Constitutionalist faction prevailed on the battlefield and drafted the present-day Constitution of Mexico, which aimed to create a strong central government. Revolutionary generals held power from 1920 to 1940. The revolutionary conflict was primarily a civil war, but foreign powers, having important economic and strategic interests in Mexico, figured in the outcome of Mexico's power struggles. The United States involvement in the Mexican Revolution, United States played an especially significant role. Although the decades-long r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xochipala
Xochipala is a minor archaeological site in the Mexican state of Guerrero, whose name has become attached, somewhat erroneously, to a style of Formative Period figurines and pottery from 1500 to 200 BCE. The archaeological site belongs to the Classic and Postclassic eras, approximately 200–1400 CE. Archaeological site The Organera Xochipala archaeological zone takes its name from the nearby village of Xoxhipala and the local organ pipe cactus. The archaeological site belongs to the Classic and, most importantly, the Postclassic eras, from 200 to 1400 CE. In the mid-20th century this site, representative of the Mezcala culture, was extensively looted of an estimated 20,000 pieces. Most of the sculptural artifacts have been studied as looted pieces appearing in art collections. The area is known for its Xochipala-style figurines and stone bowls, which have been dated to the Formative (or Preclassic) Period 1500 to 200 BCE. The site is particularly notable for the d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.svg "Click for more on -> Mexico City"){kind=logo}
