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Thirtynine Mile Volcanic Field
The Thirtynine Mile volcanic area, part of the larger Central Colorado volcanic field, is an extinct volcano, extinct volcanic field, volcanic area located in Park County, Colorado, Park and Teller County, Colorado, Teller counties, Colorado, northwest of Cripple Creek, Colorado, Cripple Creek and southeast of South Park (Park County, Colorado), South Park. The area was the site of significant volcanism in the Paleogene Period about 35 million years ago. volcanic ash, Ashfall and lahars (mudflows) from the volcanoes created the conditions for fossilization at what is now Florissant Fossil Beds National Monument. The Thirtynine Mile volcanic area is the northern reach of an extensive Eocene to Oligocene volcanic belt. The volcanic fields in this belt include, from north to south, the Thirtynine Mile and San Juan volcanic field, San Juan in Colorado, the Mogollon-Datil volcanic field, Mogollon-Datil in New Mexico, the Boot Heel volcanic field, Boot Heel in the bootheel of southwes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Central Colorado Volcanic Field
The central Colorado volcanic field (CCVF) is a volcanic field in Park County, Colorado, Park County, Colorado. It is located in the southern Rocky Mountains and covered a roughly triangular area centered on the Thirtynine Mile volcanic area and extending from the Sawatch Range southeast to the northern Sangre de Christo Range and the Wet Mountains and northeast to the southern Front Range south of Denver. The area covered by the volcanic products of the eruptions included some produced by at least ten volcanic centers or calderas. The field overlaps the San Juan volcanic field to the west. The volcanic products date from the late Eocene to the early Oligocene (). Economic significance Rocks of the CCVF host base metal, base- and precious metal deposits, including the volcanic diatreme at Cripple Creek, Colorado, Cripple Creek, the site of a notable gold rush beginning in 1890. By 1900, more than 500 mines had been established in the Cripple Creek district, and the population e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Juan Volcanic Field
The San Juan volcanic field is part of the San Juan Mountains in southwestern Colorado. It consists mainly of volcanic rocks that form the largest remnant of a major composite volcanic field that covered most of the southern Rocky Mountains in the Middle Tertiary geologic time.Steven, Thomas A.; Lipman, Peter W. (1976)"Calderas of the San Juan Volcanic Field, Southwestern Colorado" ''U.S. Geological Survey Professional Papers''. Washington, DC: U.S. Government Printing Office. 958: 1–35. Retrieved 2012-05-16. There are approximately fifteen calderas known in the San Juan Volcanic Fields; however, it is possible that there are two or even three more in the region. The region began with many composite volcanoes that became active between 35 and 40 million years ago, with peak activity in the time period around 35-30 million years ago. Around this time the activity began to include explosive ash-flow eruptions. Many of these volcanoes experienced caldera collapse, resulting in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landforms Of Park County, Colorado
A landform is a natural or anthropogenic land feature on the solid surface of the Earth or other planetary body. Landforms together make up a given terrain, and their arrangement in the landscape is known as topography. Landforms include hills, mountains, canyons, and valleys, as well as shoreline features such as bays, peninsulas, and seas, including submerged features such as mid-ocean ridges, volcanoes, and the great ocean basins. Physical characteristics Landforms are categorized by characteristic physical attributes such as elevation, slope, orientation, stratification, rock exposure and soil type. Gross physical features or landforms include intuitive elements such as berms, mounds, hills, ridges, cliffs, valleys, rivers, peninsulas, volcanoes, and numerous other structural and size-scaled (e.g. ponds vs. lakes, hills vs. mountains) elements including various kinds of inland and oceanic waterbodies and sub-surface features. Mountains, hills, plateaux, and plains are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guffey, Colorado
Guffey is a census-designated place (CDP) and post office in and governed by Park County, Colorado, United States. The Guffey post office has the ZIP Code 80820. At the United States Census 2020, the population of the Guffey CDP was 111. The CDP is a part of the Denver–Aurora–Lakewood, CO Metropolitan Statistical Area. History The town was once called Freshwater, and was the center of activity for the Freshwater Mining District, a minor producer of copper, lead, zinc, mica, feldspar, and other minerals, including traces of gold and silver. Activity and population peaked between the years 1895 and 1902, with over 500 residents and 40 businesses in the town. Cattle ranching and lumber operations supplemented the mining activity. The town was also known for its dances and fiddlers. In January 2001, the bodies of three members of the Dutcher family were found near Guffey; all had been murdered. Three teenagers were convicted of the crime. The boys had formed a group that took ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thirtynine Mile Mountain
Thirtynine Mile Mountain, elevation , is a summit in the Front Range of the Pike National Forest in central Colorado. See also * List of Colorado mountain summits *List of Colorado county high points This is a list of all 64 counties of the U.S. State of Colorado by their points of highest elevation. Of the 50 highest county high points in the United States, 30 are located in Colorado. The highest point in Colorado is the summit of Mount ... References External links Mountains of Colorado Mountains of Park County, Colorado North American 3000 m summits {{Colorado-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North American Plate
The North American Plate is a tectonic plate covering most of North America, Cuba, the Bahamas, extreme northeastern Asia, and parts of Iceland and the Azores. With an area of , it is the Earth's second largest tectonic plate, behind the Pacific Plate (which borders the plate to the west). It extends eastward to the Mid-Atlantic Ridge and westward to the Chersky Range in eastern Siberia. The plate includes both continental and oceanic crust. The interior of the main continental landmass includes an extensive granitic core called a craton. Along most of the edges of this craton are fragments of crustal material called terranes, which are accreted to the craton by tectonic actions over a long span of time. It is thought that much of North America west of the Rocky Mountains is composed of such terranes. Boundaries The southern boundary with the Cocos Plate to the west and the Caribbean Plate to the east is a transform fault, represented by the Swan Islands Transform Fault unde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Farallon Plate
The Farallon Plate was an ancient oceanic plate. It formed one of the three main plates of Panthalassa, alongside the Phoenix Plate and Izanagi Plate, which were connected by a triple junction. The Farallon Plate began subducting under the west coast of the North American Plate—then located in modern Utah—as Pangaea broke apart and after the formation of the Pacific Plate at the centre of the triple junction during the Early Jurassic. It is named for the Farallon Islands, which are located just west of San Francisco, California. Over time, the central part of the Farallon Plate was completely subducted under the southwestern part of the North American Plate. The remains of the Farallon Plate are the Juan de Fuca, Explorer and Gorda Plates, subducting under the northern part of the North American Plate; the Cocos Plate subducting under Central America; and the Nazca Plate subducting under the South American Plate. The Farallon Plate is also responsible for transporting old i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subduction
Subduction is a geological process in which the oceanic lithosphere is recycled into the Earth's mantle at convergent boundaries. Where the oceanic lithosphere of a tectonic plate converges with the less dense lithosphere of a second plate, the heavier plate dives beneath the second plate and sinks into the mantle. A region where this process occurs is known as a subduction zone, and its surface expression is known as an arc-trench complex. The process of subduction has created most of the Earth's continental crust. Rates of subduction are typically measured in centimeters per year, with the average rate of convergence being approximately two to eight centimeters per year along most plate boundaries. Subduction is possible because the cold oceanic lithosphere is slightly denser than the underlying asthenosphere, the hot, ductile layer in the upper mantle underlying the cold, rigid lithosphere. Once initiated, stable subduction is driven mostly by the negative buoyancy of the de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sierra Madre Occidental
The Sierra Madre Occidental is a major mountain range system of the North American Cordillera, that runs northwest–southeast through northwestern and western Mexico, and along the Gulf of California. The Sierra Madre is part of the American Cordillera, a chain of mountain ranges (cordillera) that consists of an almost continuous sequence of mountain ranges that form the western 'sounds' of North America, Central America, South America and West Antarctica. Etymology The Spanish name ''sierra madre'' means "mother mountain range" in English, and ''occidental'' means "western", these thus being the "Western mother mountain range". To the east, from the Spanish ''oriental'' meaning "eastern" in English, the Sierra Madre Oriental range or "Eastern Mother Mountains" runs generally parallel to the Sierra Madre Occidental along eastern Mexico and the Gulf of Mexico. The range extends from northern Sonora, a state near the Mexico–U.S. border at Arizona, southeastwards to the Trans ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eastern Chihuahua Volcanic Field
Eastern may refer to: Transportation * China Eastern Airlines, a current Chinese airline based in Shanghai *Eastern Air, former name of Zambia Skyways *Eastern Air Lines, a defunct American airline that operated from 1926 to 1991 *Eastern Air Lines (2015), an American airline that began operations in 2015 *Eastern Airlines, LLC, previously Dynamic International Airways, a U.S. airline founded in 2010 * Eastern Airways, an English/British regional airline * Eastern Provincial Airways, a defunct Canadian airline that operated from 1949 to 1986 * Eastern Railway (other), various railroads *Eastern Avenue (other), various roads * Eastern Parkway (other), various parkways * Eastern Freeway, Melbourne, Australia *Eastern Freeway Mumbai, Mumbai, India *, a cargo liner in service 1946-65 Education * Eastern University (other) *Eastern College (other) Other uses * Eastern Broadcasting Limited, former name of Maritime Broadcasting System, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Texas
Texas (, ; Spanish language, Spanish: ''Texas'', ''Tejas'') is a state in the South Central United States, South Central region of the United States. At 268,596 square miles (695,662 km2), and with more than 29.1 million residents in 2020, it is the second-largest U.S. state by both List of U.S. states and territories by area, area (after Alaska) and List of U.S. states and territories by population, population (after California). Texas shares borders with the states of Louisiana to the east, Arkansas to the northeast, Oklahoma to the north, New Mexico to the west, and the Mexico, Mexican States of Mexico, states of Chihuahua (state), Chihuahua, Coahuila, Nuevo León, and Tamaulipas to the south and southwest; and has a coastline with the Gulf of Mexico to the southeast. Houston is the List of cities in Texas by population, most populous city in Texas and the List of United States cities by population, fourth-largest in the U.S., while San Antonio is the second most pop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trans-Pecos Volcanic Field
The Trans-Pecos Volcanic Field is a volcanic field located in western Texas in the counties of Brewster, Jeff Davis, Presidio, and extends into northern Mexican states of Chihuahua and Coahuila. It is the southernmost volcanic field to be documented and recorded in the continental United States. The field started volcanic activity around 48 million years ago in the middle Eocene epoch, and ended around 17 million years later in the Miocene epoch. The Volcanic field is the result of Ancient Subduction off the western portion of the continent at the time. Most of the volcanoes in the field are calderas. Some of the volcanoes are: *In Big Bend National Park, the Christmas Mountains caldera complex and Pine Canyon caldera complex *In Big Bend Ranch State Park, the Bofecitos mountains center and the Solitario *Near Alpine, the Paisano Volcano *In northern Jeff Davis County, the Davis Mountains Caldera Complex *In central Presidio County, the Chinati Mountain Caldera Complex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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