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Encyclopedia > Valle Grande

Valle Grande (Va-lye Gra-n-de), known to geologists as the Valles Caldera and the Jemez Caldera, is a pristine area in the Jemez Mountains of northern New Mexico in the United States. It is all that remains of a very large volcano, or Supervolcano, which erupted in ancient times and helped shape the Jemez Mountains. File links The following pages link to this file: Valle Grande ... File links The following pages link to this file: Valle Grande ... The Jemez Mountains (pronounced HEY-mez) are a group of volcanic mountains in New Mexico, United States. ... State nickname: Land of Enchantment Other U.S. States Capital Santa Fe Largest city Albuquerque Governor Bill Richardson Official languages English and Spanish Area 315,194 km² (5th)  - Land 314,590 km²  - Water 607 km² (0. ... A volcano is a geological landform (usually a mountain) where magma (rock of the earths interior made molten or liquid by high pressure and temperature) erupts through the surface of the planet. ... A supervolcano refers to a volcano that produces the largest and most voluminous kinds of eruptions on earth. ...

Contents

History

Until recently, it was part of the Baca Ranch, property of the Dunigan family; however, the owners sold the surface estate of 95,000 acres (38,000 hectares) and seven-eighths of the geothermal mineral estate to the federal government, which is trying to find a way to let the public enjoy the land without spoiling it. Geothermal power is electricity generated by utilizing naturally occurring geological heat sources. ... A federal government is the common government of a federation. ...


Valles Caldera National Preserve

On 25 July 2000, President Bill Clinton enacted the Valles Caldera Preservation Act, 16 U.S.C. Sections 698v-698v-10, that created the Valles Caldera National Preserve. Noting that the careful husbandry of the Baca Ranch by its private owners, including selective timbering, limited grazing and hunting, and the use of prescribed fire, had preserved a mix of healthy range and timber land with significant species diversity, including New Mexico's largest herd of elk, thereby serving as a model for self-sustaining land development and use. 16 U.S.C. Section 698v(a)(5). Funds for the purchase came from the Land and Water Conservation Fund derived from royalties the US government receives from offshore oil and gas drilling [1] (http://archives.cnn.com/2000/NATURE/07/17/baca.ranch.enn/). The Preserve will have to produce sustaining income, under the Act; environmentalists had lobbied for the more inclusive protections of National Park status instead. July 25 is the 206th day (207th in leap years) of the year in the Gregorian Calendar, with 159 days remaining. ... 2000 is a leap year starting on Saturday of the Gregorian calendar. ... Order: 42nd President Vice President: Al Gore Term of office: January 20, 1993 – January 20, 2001 Preceded by: George H. W. Bush Succeeded by: George W. Bush Date of birth: August 19, 1946 Place of birth: Hope, Arkansas First Lady: Hillary Rodham Clinton Political party: Democratic William Jefferson Clinton (born... The word Elk has several possible meanings: In Europe, Elk is the animal known in North America as the Moose (Alces alces). ... Yosemite National Park in the United States. ...


Geology & Science

Scientists are studying this area to learn about the fundamental processes in magmatism, hydrothermal systems, and ore deposition. With nearly 40 deep cores examined, resulting in extensive subsurface data, the Valles Caldera is the best explored caldera complex in the United States. Additionally, the volcanic properties of the Valles Caldera make it a likely source for renewable and nonpolluting geothermal energy. It is the younger of two calderas in the region, having collapsed over and buried the Toledo Caldera (which might have collapsed over yet older calderas). These two large eruptions took place 1.4 million and 1 million years ago. The circular topographic expression of the Valles caldera measures 22 kilometers (14 miles) in diameter. The Jemez Volcanic Field, including the calderas, lies above the intersection of the Rio Grande Rift, which runs north-south through New Mexico, and the Jemez Lineament, which extends from southeastern Arizona northeast to the westernmost part of Oklahoma. The volcanic activity is related to the tectonic movements along this intersection. This article is about the type of molten rock. ... Hydrothermal circulation in the oceans is the passage of the water through mid-ocean Ridge (MOR) systems. ... An ore is a mineral deposit containing a metal or other valuable resource in economically viable concentrations. ... Crater Lake, Oregon A caldera is a volcanic feature formed by the collapse of a volcano into itself. ... Geothermal power is electricity generated by utilizing naturally occurring geological heat sources. ... The Rio Grande Rift is a rift valley extending north from Mexico, near El Paso, Texas through New Mexico into central Colorado. ... State nickname: The Grand Canyon State, The Copper State Other U.S. States Capital Phoenix Largest city Phoenix Governor Janet Napolitano Official languages English Only State Area 295,254 km² (6th)  - Land 294,312 km²  - Water 942 km² (0. ... Oklahoma is a southwestern state of the United States and its U.S. postal abbreviation is OK; others abbreviate the states name Okla. ...


The lower Bandelier tuff which can be seen along canyon walls west of the Valles Caldera, including San Diego Canyon, is related to the eruption and collapse of the Toledo Caldera. The upper Bandalier tuff is believed to have been deposited during eruption and collapse of the Valles Caldera. The now eroded and exposed orange-tan, light colored Bandelier tuff from these events create the stunning mesas of the Pajarito Plateau. Houses at Bandalier Bandelier National Monument The Bandelier National Monument is a U.S. National Monument consisting of 32,737 acres (132. ...


External links

  • Maps and aerial photos (http://kvaleberg.com/extensions/mapsources/index.php?params=36.78784_N_-106.18343_E_type:landmark_region:US)
    • Street map from MapQuest  (http://mapquest.com/maps/map.adp?latlongtype=decimal&latitude=36.78784&longitude=-106.18343&zoom=7) or Google Maps (http://maps.google.com/maps?ll=36.78784,-106.18343&spn=0.03,0.045)
    • Topographic map from TopoZone (http://topozone.com/map.asp?lat=36.78784&lon=-106.18343&s=50&size=m&datum=nad83)
    • Aerial image or topographic map from TerraServer-USA (http://terraserver-usa.com/image.aspx?s=13&lon=-106.18343&lat=36.78784&w=2)
    • Satellite image from Google Maps (http://maps.google.com/maps?ll=36.78784,-106.18343&spn=0.03,0.045&t=k)

  Results from FactBites:
 
IUP Geoscience Virtual Field Trip 1999 -- Valle Grande Caldera (1034 words)
Valle Grande Caldera is located on Route 4 West in New Mexico.
This is the Valle Grande Caldera which is a collapsed magma chamber of a once active volcano.
Ok - The springs are the remnants of the heat from the volcano that formed the Valle Grande.
  More results at FactBites »

 
 

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