World Library  
Flag as Inappropriate
Email this Article

Mexican Plateau

Article Id: WHEBN0012631416
Reproduction Date:

Title: Mexican Plateau  
Author: World Heritage Encyclopedia
Language: English
Subject: Mexican Plateau, Thermal low, North American Cordillera, List of Ultras of Mexico, Trans-Mexican Volcanic Belt
Collection:
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Mexican Plateau

Mexican Plateau
Altiplanicie Mexicana
Region
A view of Mexican Plateau near San Miguel de Allende, Guanajuato
Country Mexico
States Chihuahua, Coahuila, Durango, Zacatecas, San Luis Potosí, Aguascalientes, Jalisco, Michoacán, Guanajuato, Querétaro, México, Hidalgo, Federal District
Coordinates
Highest point 9,000 ft (2,745 m) [1]
Lowest point 3,300 ft (1,005 m) [2]
Length 1,532 km (952 mi)
Width 352 km (219 mi)
Area 601,882 km2 (232,388 sq mi)
Population 74,900,000 (2000 [3])
Density 124.58 / km2 (323 / sq mi)
Geographic map of the highest Mountain Ranges of Mexico.

The Central Mexican Plateau, also known as the Mexican Altiplano (Spanish: Altiplanicie Mexicana), is a large arid-to-semiarid plateau that occupies much of northern and central Mexico. Averaging 1,825 m (5,988 ft) above sea level, it extends from the United States border in the north to the Trans-Mexican Volcanic Belt in the south, and is bounded by the Sierra Madre Occidental and Sierra Madre Oriental to the west and east, respectively.

A low east-west mountain range in the state of Zacatecas divides the plateau into northern and southern sections. These two sections, called the Northern Plateau (Spanish: Mesa del Norte) and Central Plateau (Spanish: Mesa Central), are now generally regarded by geographers as sections of one plateau.

The Mexican Plateau is mostly covered by deserts and xeric shrublands, with pine-oak forests covering the surrounding mountain ranges and forming sky islands on some of the interior ranges. The Mexican Altiplano is one of six distinct physiographic sections of the Basin and Range Province, which in turn is part of the Intermontane Plateaus physiographic division.

In phytogeography, the Sonoran Desert is within the Sonoran Floristic Province of the Madrean Region in southwestern North America, part of the Holarctic Kingdom of the northern Western Hemisphere.

Geography

Mesa del Norte is part of the extreme northern part of the Mexican Plateau.
Valley of Mexico is the extreme southern part of the Mexican Plateau.

The Mesa del Norte or northern plateau averages 1,100 metres (3,600 ft) in elevation above mean sea level and extends south from the Rio Grande (Río Bravo del Norte) through the states of Chihuahua, Coahuila, Durango, Zacatecas and San Luis Potosí. Various narrow, isolated ridges cross the Mesa del Norte and numerous depressions also dot the region, the largest of which is the Bolsón de Mapimí. The Río Bravo del Norte and its tributary, the Río Conchos, drain portions of the northern plateau, and the Río Pánuco and its tributaries drain the southeastern corner. Both drain to the Gulf of Mexico. Much of the northern plateau comprises internal drainage basins that do not drain to the sea. The Chihuahuan Desert extends across the northern portion of the northern plateau, while the Meseta Central matorral covers the central portion, and the Central Mexican matorral extends from the southern portion of the northern plateau across the southern plateau.

The Mesa Central or southern plateau is higher than its northern counterpart, averaging 2,000 m (6,600 ft) in elevation. The southern plateau contains numerous valleys originally formed by ancient lakes. It extends across the states of Aguascalientes, Jalisco, Zacatecas, Guanajuato, Querétaro, Michoacán, México (state), and Hidalgo plus the Federal District. Several of Mexico's most prominent cities, including Mexico City and Guadalajara, are located in the valleys of the southern plateau. Much of the southern plateau is drained by the Río Grande de Santiago and its tributaries, including the Río Lerma, which drain west into the Pacific Ocean. Tributaries of the Río Pánuco drain the eastern portion of the southern plateau. The Central Mexican matorral covers much of the southern plateau, with the subtropical Bajío dry forests occupying the lower portions of the Lerma–Río Grande de Santiago basin. Higher altitudes are covered by Mixed Forests, then Temperate Coniferous Forests, up to the snow line in the top of the volcanoes that surround the southern and western edges.

References

  1. ^ Earth from Space - Image Information
  2. ^ República de México - Monografias.com
  3. ^ Regiones mexicanas
  •  This article incorporates public domain material from websites or documents of the Library of Congress Country Studies.
  • Ricketts, Taylor H., Eric Dinerstein, David M. Olson, Colby J. Loucks, et al. (1999). Terrestrial Ecoregions of North America: a Conservation Assessment. Island Press, Washington DC.

External links

  • Mexican Plateau, Mexico City Region. Image Science and Analysis Laboratory, NASA-Johnson Space Center. 18 Mar. 2005. Earth from Space - Image Information.


This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 


Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.