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Lake Chalco
Lake Chalco was an endorheic lake formerly located in the Valley of Mexico, and was important for Mesoamerican cultural development in central Mexico. The lake was named after the ancient city of Chalco on its former eastern shore. Geography Lake Chalco and the other Mexican great lakes (the brackish lakes Texcoco, Zumpango and Xaltocan and the freshwater Xochimilco) formed the ancient Basin of Mexico lake system. These lakes were home to many Mesoamerican cultures including the Toltecs and the Aztecs. Lake Chalco itself had a fresh water hydrologic structure due in large part to the artesian springs lining its south shore. This allowed extensive beds to be cultivated through the Aztec era. After the Spanish conquest of the Aztec Empire, these beds fell into disuse and were largely abandoned. History Starting during the Aztec era and continuing into the 20th century, efforts were made to drain Lake Chalco and her sister lakes in order to avoid periodic flooding and to prov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Chalco 1847
A lake is an area filled with water, localized in a basin, surrounded by land, and distinct from any river or other outlet that serves to feed or drain the lake. Lakes lie on land and are not part of the ocean, although, like the much larger oceans, they do form part of the Earth's water cycle. Lakes are distinct from lagoons, which are generally coastal parts of the ocean. Lakes are typically larger and deeper than ponds, which also lie on land, though there are no official or scientific definitions. Lakes can be contrasted with rivers or streams, which usually flow in a channel on land. Most lakes are fed and drained by rivers and streams. Natural lakes are generally found in mountainous areas, rift zones, and areas with ongoing glaciation. Other lakes are found in endorheic basins or along the courses of mature rivers, where a river channel has widened into a basin. Some parts of the world have many lakes formed by the chaotic drainage patterns left over from the last ic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Artesian Spring
An artesian aquifer is a confined aquifer containing groundwater under positive pressure. An artesian aquifer has trapped water, surrounded by layers of impermeable rock or clay, which apply positive pressure to the water contained within the aquifer. If a well were to be sunk into an artesian aquifer, water in the well-pipe would rise to a height corresponding to the point where hydrostatic equilibrium is reached. A well drilled into such an aquifer is called an ''artesian well''. If water reaches the ground surface under the natural pressure of the aquifer, the well is termed a ''flowing artesian well''. Fossil water aquifers can also be artesian if they are under sufficient pressure from the surrounding rocks, similar to how many newly tapped oil wells are pressurized. From the previous statement, it can be inferred that not all aquifers are artesian (i.e., water table aquifers occur where the groundwater level at the top of the aquifer is at equilibrium with atmos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endorheic Lakes Of North America
An endorheic basin (; also spelled endoreic basin or endorreic basin) is a drainage basin that normally retains water and allows no outflow to other external bodies of water, such as rivers or oceans, but drainage converges instead into lakes or swamps, permanent or seasonal, that equilibrate through evaporation. They are also called closed or terminal basins, internal drainage systems, or simply basins. Endorheic regions contrast with exorheic regions. Endorheic water bodies include some of the largest lakes in the world, such as the Caspian Sea, the world's largest inland body of water. Basins with subsurface outflows which eventually lead to the ocean are generally not considered endorheic; they are cryptorheic. Endorheic basins constitute local base levels, defining a limit of erosion and deposition processes of nearby areas. Etymology The term was borrowed from French ''endor(rh)éisme'', coined from the combining form ''endo-'' (from grc, ἔνδον ''éndon'' 'withi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geography Of Mesoamerica
The geography of Mesoamerica describes the geographic features of Mesoamerica, a culture area in the Americas inhabited by complex indigenous pre-Columbian cultures exhibiting a suite of shared and common cultural characteristics. Several well-known Mesoamerican cultures include the Olmec, Teotihuacan, the Maya, the Aztec and the Purépecha. Mesoamerica is often subdivided in a number of ways. One common method, albeit a broad and general classification, is to distinguish between the highlands and lowlands. Another way is to subdivide the region into sub-areas that generally correlate to either culture areas or specific physiographic regions. Geographic location Mesoamerica – meaning "middle of America" – is located in the mid-latitudes (between 10° and 22° N) of the Americas in the southern portion of North America, encompassing much of the isthmus that joins it with South America. Situated within the wider region known as Middle America, Mesoamerica extends from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geography Of The State Of Mexico
Geography (from Greek: , ''geographia''. Combination of Greek words ‘Geo’ (The Earth) and ‘Graphien’ (to describe), literally "earth description") is a field of science devoted to the study of the lands, features, inhabitants, and phenomena of Earth. The first recorded use of the word γεωγραφία was as a title of a book by Greek scholar Eratosthenes (276–194 BC). Geography is an all-encompassing discipline that seeks an understanding of Earth and its human and natural complexities—not merely where objects are, but also how they have changed and come to be. While geography is specific to Earth, many concepts can be applied more broadly to other celestial bodies in the field of planetary science. One such concept, the first law of geography, proposed by Waldo Tobler, is "everything is related to everything else, but near things are more related than distant things." Geography has been called "the world discipline" and "the bridge between the human and t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Former Lakes Of North America
A former is an object, such as a template, gauge or cutting die, which is used to form something such as a boat's hull. Typically, a former gives shape to a structure that may have complex curvature. A former may become an integral part of the finished structure, as in an aircraft fuselage, or it may be removable, being using in the construction process and then discarded or re-used. Aircraft formers Formers are used in the construction of aircraft fuselage, of which a typical fuselage has a series from the nose to the empennage, typically perpendicular to the longitudinal axis of the aircraft. The primary purpose of formers is to establish the shape of the fuselage and reduce the column length of stringers to prevent instability. Formers are typically attached to longerons, which support the skin of the aircraft. The "former-and-longeron" technique (also called stations and stringers) was adopted from boat construction, and was typical of light aircraft built until the adv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lakes Of Mexico
The following is a list of lakes of Mexico. Chihuahua * Lakes las chivas Durango * Lake Palmito * Lake Santiaguillo Jalisco *Lake Chapala (also in Michoacán) * Lake Sayula * Lake Cajititlán * Lake San Marcos * Lake Atotonilco Mexico City *Lake Xochimilco * Lake Cico *Lake Cacho * Lake Ceko Michoacán *Lake Cuitzeo *Lake Pátzcuaro *Lake Zirahuén Nayarit *Lake Agua Milpa Nuevo León *Lake Cerro Prieto *Lake Cuchillo *Lake marychivas Puebla *Lake Alchichica *Lake Aljojuca * Lake Atexcac * Lake La Preciosa * Lake Quechulac * Lake Tecuitlapa * Lake Tepeyahualco * Lake Totolcinco Quintana Roo * Lake Bacalar *Lake Chichancanab Sinaloa *Lake Baccarac * Lake Comedero * Lake Dominguez * Lake Hidalgo * Lake Huites * Lake Mateos *Lake Salto Tamaulipas *Lake Guerrero Veracruz *Lake Catemaco Uncategorized * Lake Espanolia * Lake Lavaderosa * Lake Méndezi * Lake Mimbresa * Lake Mocuzaria * Laguna Tortugaio See also *List of lakes {{Mexico topics * Mexico Lakes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Julio López Chávez
Julio López Chávez led a peasant rebellion in the late 1860s. He was a follower of Greek proto-anarchist Plotino Rhodakanaty, who moved to Mexico to organize peasants. When a land speculator drained Lake Chalco, López Chávez led up to 1,500 affected tenant farmers (''campesinos'') in an attempted overthrow of the oligarchic Mexican landowners. The 1867–1869 revolt spread through four Mexican states before Benito Juárez Benito Pablo Juárez García (; 21 March 1806 – 18 July 1872) was a Mexican liberal politician and lawyer who served as the 26th president of Mexico from 1858 until his death in office in 1872. As a Zapotec, he was the first indigenous pre ... ordered federal intervention. López Chávez was killed before a firing squad. His translated last words were, "Long live socialism!" References Further reading * * Mexican anarchists Peasant revolts Mexican socialists People executed by Mexico by firing squad {{Mexico-bio-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tenant Farmer
A tenant farmer is a person (farmer or farmworker) who resides on land owned by a landlord. Tenant farming is an agricultural production system in which landowners contribute their land and often a measure of operating capital and management, while tenant farmers contribute their labor along with at times varying amounts of capital and management. Depending on the contract, tenants can make payments to the owner either of a fixed portion of the product, in cash or in a combination. The rights the tenant has over the land, the form, and measures of payment vary across systems (geographically and chronologically). In some systems, the tenant could be evicted at whim ( tenancy at will); in others, the landowner and tenant sign a contract for a fixed number of years (tenancy for years or indenture). In most developed countries today, at least some restrictions are placed on the rights of landlords to evict tenants under normal circumstances. England and Wales Historically, rural ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibian
Amphibians are four-limbed and ectothermic vertebrates of the class Amphibia. All living amphibians belong to the group Lissamphibia. They inhabit a wide variety of habitats, with most species living within terrestrial, fossorial, arboreal or freshwater aquatic ecosystems. Thus amphibians typically start out as larvae living in water, but some species have developed behavioural adaptations to bypass this. The young generally undergo metamorphosis from larva with gills to an adult air-breathing form with lungs. Amphibians use their skin as a secondary respiratory surface and some small terrestrial salamanders and frogs lack lungs and rely entirely on their skin. They are superficially similar to reptiles like lizards but, along with mammals and birds, reptiles are amniotes and do not require water bodies in which to breed. With their complex reproductive needs and permeable skins, amphibians are often ecological indicators; in recent decades there has been a dramatic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Axolotl
The axolotl (; from nci, āxōlōtl ), ''Ambystoma mexicanum'', is a paedomorphic salamander closely related to the tiger salamander. Axolotls are unusual among amphibians in that they reach adulthood without undergoing metamorphosis. Instead of taking to the land, adults remain aquatic and gilled. The species was originally found in several lakes underlying what is now Mexico City, such as Lake Xochimilco and Lake Chalco. These lakes were drained by Spanish settlers after the conquest of the Aztec Empire, leading to the destruction of much of the axolotl’s natural habitat. Axolotls should not be confused with the larval stage of the closely related tiger salamander (''A. tigrinum''), which are widespread in much of North America and occasionally become paedomorphic. Neither should they be confused with mudpuppies (''Necturus'' spp.), fully aquatic salamanders from a different family that are not closely related to the axolotl but bear a superficial resemblance. , ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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