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Xitle
Xitle ( Nahuatl, "navel") is a monogenetic volcano in the Ajusco range in Cumbres del Ajusco National Park. It is located in the Tlalpan borough in the southwestern part of Mexico City. It is an ash cone volcano with a conical form, round base, altitude of approximately 300m, and a slope between 30° and 40°. Xitle erupted during the period AD 245-315, according to the results of radiocarbon dating. Among the consequences of this eruption were the formation of the Pedregal de San Ángel lava fields, to the south of the Mexican Federal District. Cuicuilco, one of the most refined cities of Mesoamerica, was destroyed and covered by lava. The subsequent diaspora of the Cuicuilcans, and the attendant diffusion of their culture across most of central Mexico, influenced important cultural changes in the nearby power center of Teotihuacan. According to some other sources, a series of big volcano eruptions, and the destruction of Cuicuilco took place in the 1st century BC.Susan Toby Eva ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cuicuilco
Cuicuilco is an important archaeological site located on the southern shore of Lake Texcoco in the southeastern Valley of Mexico, in what is today the borough of Tlalpan in Mexico City. Some historians believe this settlement goes back to 1400 BC.PASTRANA, Alejandro and Patricia Fournier''Cuicuilco. In The Oxford Encyclopedia of Mesoamerican Cultures''.The Civilizations of Mexico and Central America. Vol. 1. David Carrasco (ed.), pp. 290–292. New York: Oxford University Press. 2001 Other historians believe the pyramid could be the oldest building in the Americas circa 6,500 BC. Cuicuilco flourished during the Mesoamerican Middle and Late Formative (c. 700 BCE – 150 CE) periods. Today, it is a significant archaeological site that was occupied during the Early Formative until its destruction in the Late Formative. Based on its date of occupation, Cuicuilco may be the oldest city in the Valley of Mexico and was roughly contemporary with, and possibly interacting with, the Olm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tlalpan
Tlalpan ( nci, Tlālpan, , place on the earth, ) is a borough (''demarcación territorial'') in Mexico City. It is the largest borough, with over eighty percent under conservation as forest and other ecologically sensitive area. The rest, almost all of it on the northern edge, has been urban since the mid-20th century. When it was created in 1928, it was named after the most important settlement of the area, Tlalpan, which is referred to as “Tlalpan center” (Tlalpan centro) to distinguish it from the borough. This center, despite being in the urbanized zone, still retains much of its provincial atmosphere with colonial era mansions and cobblestone streets. Much of the borough's importance stems from its forested conservation areas, as it functions to provide oxygen to the Valley of Mexico and serves for aquifer recharge. Seventy percent of Mexico City's water comes from wells in this borough. However, the area is under pressure as its mountainous isolated location has attract ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xitle
Xitle ( Nahuatl, "navel") is a monogenetic volcano in the Ajusco range in Cumbres del Ajusco National Park. It is located in the Tlalpan borough in the southwestern part of Mexico City. It is an ash cone volcano with a conical form, round base, altitude of approximately 300m, and a slope between 30° and 40°. Xitle erupted during the period AD 245-315, according to the results of radiocarbon dating. Among the consequences of this eruption were the formation of the Pedregal de San Ángel lava fields, to the south of the Mexican Federal District. Cuicuilco, one of the most refined cities of Mesoamerica, was destroyed and covered by lava. The subsequent diaspora of the Cuicuilcans, and the attendant diffusion of their culture across most of central Mexico, influenced important cultural changes in the nearby power center of Teotihuacan. According to some other sources, a series of big volcano eruptions, and the destruction of Cuicuilco took place in the 1st century BC.Susan Toby Eva ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Teotihuacan
Teotihuacan (Spanish language, Spanish: ''Teotihuacán'') (; ) is an ancient Mesoamerican city located in a sub-valley of the Valley of Mexico, which is located in the State of Mexico, northeast of modern-day Mexico City. Teotihuacan is known today as the site of many of the most architecturally significant Mesoamerican pyramids built in the pre-Columbian Americas, namely Pyramid of the Sun and Pyramid of the Moon. At its zenith, perhaps in the first half of the first millennium (1 CE to 500 CE), Teotihuacan was the largest city in the Americas, with a population estimated at 125,000 or more, making it at least the sixth-largest city in the world during its epoch. The city covered eight square miles (21 km2), and 80 to 90 percent of the total population of the valley resided in Teotihuacan. Apart from the pyramids, Teotihuacan is also anthropologically significant for its complex, multi-family residential compounds, the Avenue of the Dead, and its vibrant, well-prese ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sierra De Ajusco-Chichinauhtzin
The Sierra del Ajusco-Chichinauhtzin, (Ajusco-Chichinautzin Mountain Range) also known as ''Serranía del Ajusco'' or ''Sierra de Chichinauhtzin'', is a Mexican mountain range located between Mexico City and the states of Morelos and Mexico. It makes up the southern part of the mountain necklace that surrounds Mexico City. It is made up of more than one hundred volcanic cones, among which are: Tláloc ( MAMSL), Chichinauhtzin (, Xitle (, Cerro Pelado ( and Cuauhtzin (. Its maximum height is at the Cruz del Marqués peak on the Ajusco volcano (). Background The range includes parts of the municipalities of Tlalpan, Xochimilco, Tláhuac, Milpa Alta and Magdalena Contreras on the south of Mexico City; the municipalities of Huitzilac, Tepoztlán and Tlalnepantla in Morelos; and the municipalities of Juchitepec and Tepetlixpa, in the State of Mexico. These mountains form the highest point as well as the southern limit of Mexico City, separating the Valley of Mexico from the Cuer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jardines Del Pedregal
Jardines del Pedregal ( en, Rocky Gardens) or simply El Pedregal (full name: El Pedregal de San Angel) is an upscale residential '' colonia'' (neighborhood) in southern Mexico City hosting some of the richest families of Mexico. It is also known as the home to the biggest mansion in the city. Its borders are San Jerónimo Avenue and Ciudad Universitaria to the north, Insurgentes Avenue to the east and Periférico to the south and west. Its were a major real estate project undertaken by Mexican modernist architect Luis Barragán. When it was originally developed, in the mid-1940s in the lava fields of the Pedregal de San Ángel, it was probably the biggest urban development the city had seen. The first house to be built here was the studio and home of architect Max Cetto. The area has changed significantly since its original development. Although its modernist spirit and original elements of ecosystem protection are gone, critics have described its original houses and gardens as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ajusco
Ajusco is a lava dome volcano located just south of Mexico City, Mexico, in the Tlalpan borough of the city. It is the highest point in the city. Etymology Ajusco is a Náhuatl word variously translated as "source of waters" or "watered grove", and the Lerma River and Balsas River draw some of their source waters from this area. Also, the flow from all of the remaining strong springs in the area adjacent to the peak are captured to augment Mexico City's water supply. Geology Ajusco is a lava dome complex of Pliocene-Pleistocene age, surrounded by block and ash flow deposits. Ajusco is part of the mountain chain of volcanic origin known as Sierra de Ajusco-Chichinauhtzin, among which Xitle (), Tláloc (), Pelado (), Cuautzin () and Chichinautzin () stand out. This range is part of the Trans-Mexican Volcanic Belt which crosses central Mexico and contains the country's highest peaks. Ecology Parts of this range account for about half of the area of the Mexican Federal District, t ... [...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] |
Volcanic Cone
Volcanic cones are among the simplest volcanic landforms. They are built by ejecta from a volcanic vent, piling up around the vent in the shape of a cone with a central crater. Volcanic cones are of different types, depending upon the nature and size of the fragments ejected during the eruption. Types of volcanic cones include stratocones, spatter cones, tuff cones, and cinder cones. Stratocone Stratocones are large cone-shaped volcanoes made up of lava flows, explosively erupted pyroclastic rocks, and igneous intrusives that are typically centered around a cylindrical vent. Unlike shield volcanoes, they are characterized by a steep profile and periodic, often alternating, explosive eruptions and effusive eruptions. Some have collapsed craters called calderas. The central core of a stratocone is commonly dominated by a central core of intrusive rocks that range from around to over several kilometers in diameter. This central core is surrounded by multiple generations of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radiocarbon Dating
Radiocarbon dating (also referred to as carbon dating or carbon-14 dating) is a method for determining the age of an object containing organic material by using the properties of radiocarbon, a radioactive isotope of carbon. The method was developed in the late 1940s at the University of Chicago by Willard Libby. It is based on the fact that radiocarbon () is constantly being created in the Earth's atmosphere by the interaction of cosmic rays with atmospheric nitrogen. The resulting combines with atmospheric oxygen to form radioactive carbon dioxide, which is incorporated into plants by photosynthesis; animals then acquire by eating the plants. When the animal or plant dies, it stops exchanging carbon with its environment, and thereafter the amount of it contains begins to decrease as the undergoes radioactive decay. Measuring the amount of in a sample from a dead plant or animal, such as a piece of wood or a fragment of bone, provides information that can be used to calc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nahuatl Language
Nahuatl (; ), Aztec, or Mexicano is a language or, by some definitions, a group of languages of the Uto-Aztecan languages, Uto-Aztecan language family. Varieties of Nahuatl are spoken by about Nahuas, Nahua peoples, most of whom live mainly in Central Mexico and have smaller populations Nahuatl language in the United States, in the United States. Nahuatl has been spoken in central Mexico since at least the seventh century CE. It was the language of the Aztecs, Aztec/Mexica, who dominated what is now central Mexico during the Late Postclassic period of Mesoamerican chronology, Mesoamerican history. During the centuries preceding the Spanish conquest of the Aztec Empire, Spanish and Tlaxcalan conquest of the Aztec Empire, the Aztecs had expanded to incorporate a large part of central Mexico. Their influence caused the variety of Nahuatl spoken by the residents of Tenochtitlan to become a prestige dialect, prestige language in Mesoamerica. After the conquest, when Spanish colonist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mexican Federal District
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 it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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