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Douglas Pass
Douglas Pass, elevation , is a mountain pass in the Book Cliffs of western Colorado. It is located in Garfield County and is traversed by State Highway 139. The pass divides the watersheds of West Douglas Creek to the north and East Salt Creek to the south. It is named for the Northern Ute, Chief Douglas. The pass is not an especially high summit relative to other Colorado passes, and the road, though reasonably steep on the south side (7%), has no tight spots and only a few switchbacks. The summit gives an unusual view of the northeast face of the La Sal Mountains (twelve peaks over 12,000 feet), away in Utah. The remainder of the drive is basically in valleys following creeks. The Utes had established a trail over the pass, which was subsequently used by European explorers and settlers. The Domínguez–Escalante expedition crossed the pass in 1776. Following the Ute trail, a road over the pass was constructed in the 1920s. The mountain consists of shale strata belonging ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colorado State Highway 139
State Highway 139 (SH 139) is a state highway in western Colorado, United States. SH 139's southern terminus is at Interstate 70 (I-70) in Loma, and the northern terminus is at SH 64 in Rangely. Route description SH 139 begins in the south at exit 15 of I-70 at Loma roughly fifteen miles west of Grand Junction. Just north of I-70 the road intersects U.S. Route 6/ US 50. From there the road proceeds northward through very remote, very sparsely populated land to its northern end at SH 64 at Rangely. There are no significant settlements for the road's entire length. Near its midpoint, the road crosses the Book Cliffs at Douglas Pass at an elevation of . History The route was established in the 1920s, when it began at US 6 in Loma and went north to SH 64. The route was completely deleted in 1954 and reestablished by 1964, where it ended at Douglas Pass. The route was paved from Loma to Douglas Pass in 1972, when the southern terminus was extended to I-7 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Garfield County, Colorado
Garfield County is a county located in the U.S. state of Colorado. As of the 2020 census, the population was 61,685. The county seat is Glenwood Springs. The county is named in honor of United States President James A. Garfield. Garfield County is included in the Glenwood Springs, CO Micropolitan Statistical Area, which is also included in the Edwards-Glenwood Springs, CO Combined Statistical Area. Geography According to the U.S. Census Bureau, the county has a total area of , of which is land and (0.3%) is water. Adjacent counties *Rio Blanco County - north * Routt County - northeast * Eagle County - east * Pitkin County - southeast *Mesa County - south *Grand County, Utah - southwest *Uintah County, Utah - northwest Major highways * Interstate 70 * * * U.S. Highway 6 * State Highway 13 * State Highway 82 * State Highway 133 * State Highway 139 * State Highway 325 Protected areas * Flat Tops Wilderness *Grand Mesa National Forest * Harvey Gap State Park * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., federal district, five major unincorporated territories, nine United States Minor Outlying Islands, Minor Outlying Islands, and 326 Indian reservations. The United States is also in Compact of Free Association, free association with three Oceania, Pacific Island Sovereign state, sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Palau, Republic of Palau. It is the world's List of countries and dependencies by area, third-largest country by both land and total area. It shares land borders Canada–United States border, with Canada to its north and Mexico–United States border, with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 million, it is the List of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Book Cliffs
The Book Cliffs are a series of desert mountains and cliffs in western Colorado and eastern Utah in the western United States. They are so named because the cliffs of Cretaceous sandstone that cap many of the south-facing buttes appear similar to a shelf of books. Stratigraphy The Book Cliffs are one of the world's best places to study sequence stratigraphy. In the 1980s, Exxon scientists used the Cretaceous strata of the Book Cliffs to develop the science of sequence stratigraphy. The Book Cliffs have preserved excellent strata of the foreland basin of the ancient Western Interior Seaway that stretched north from the Gulf of Mexico to the Yukon in the Cretaceous Period. Components of deltaic and shallow marine reservoirs are very well preserved in the Book Cliffs. Wildlife Large mammals found in the Book Cliffs include coyotes, mountain lions, bobcats, mule deer, elk, black bears, pronghorn, American bison as an extension of the Henry Mountains bison herd and bighorn sheep. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Geological Survey
The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The organization's work spans the disciplines of biology, geography, geology, and hydrology. The USGS is a fact-finding research organization with no regulatory responsibility. The agency was founded on March 3, 1879. The USGS is a bureau of the United States Department of the Interior; it is that department's sole scientific agency. The USGS employs approximately 8,670 people and is headquartered in Reston, Virginia. The USGS also has major offices near Lakewood, Colorado, at the Denver Federal Center, and Menlo Park, California. The current motto of the USGS, in use since August 1997, is "science for a changing world". The agency's previous slogan, adopted on the occasion of its hundredth an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colorado
Colorado (, other variants) is a state in the Mountain states, Mountain West subregion of the Western United States. It encompasses most of the Southern Rocky Mountains, as well as the northeastern portion of the Colorado Plateau and the western edge of the Great Plains. Colorado is the List of U.S. states and territories by area, eighth most extensive and List of U.S. states and territories by population, 21st most populous U.S. state. The 2020 United States Census, 2020 United States census enumerated the population of Colorado at 5,773,714, an increase of 14.80% since the 2010 United States Census, 2010 United States census. The region has been inhabited by Indigenous peoples of the Americas, Native Americans and their Paleo-Indians, ancestors for at least 13,500 years and possibly much longer. The eastern edge of the Rocky Mountains was a major migration route for early peoples who spread throughout the Americas. "''Colorado''" is the Spanish adjective meaning "ruddy", th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ute People
Ute () are the Indigenous people of the Ute tribe and culture among the Indigenous peoples of the Great Basin. They had lived in sovereignty in the regions of present-day Utah and Colorado in the Southwestern United States for many centuries until European settlers conquered their lands. The state of Utah is named after the Ute tribe. In addition to their ancestral lands within Colorado and Utah, their historic hunting grounds extended into current-day Wyoming, Oklahoma, Arizona, and New Mexico. The tribe also had sacred grounds outside their home domain that were visited seasonally. There were 12 historic Tribe, bands of Utes. Although they generally operated in family groups for hunting and gathering, the communities came together for ceremonies and trading. Many Ute bands were culturally influenced by neighboring Native Americans in the United States, Native American tribes and Puebloans, whom they traded with regularly. After contact with early Colonial history of the Unit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
La Sal Mountains
The La Sal Mountains or La Sal Range are a mountain range located in Grand and San Juan counties in the U.S. state of Utah, along the border with Colorado. The range rises above and southeast of Moab and north of the town of La Sal. This range is part of the Manti-La Sal National Forest and the southern Rocky Mountains. The maximum elevation is at Mount Peale, reaching above sea level. The range contains three clusters of peaks separated by passes. The peaks span a distance of about . The name of the range dates to Spanish times, when the Sierra La Sal (meaning the "Salt Mountains") was a prominent landmark on the Old Spanish Trail between Santa Fe and Los Angeles. Geology The range formed due to intrusion of igneous rocks and subsequent erosion of the surrounding less-resistant sedimentary rocks. The most abundant igneous rocks are porphyritic, with phenocrysts of hornblende and plagioclase: these rocks are called diorite in some accounts but trachyte in at least one othe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Domínguez–Escalante Expedition
The Domínguez–Escalante Expedition was a Spanish journey of exploration conducted in 1776 by two Franciscan priests, Atanasio Domínguez and Silvestre Vélez de Escalante, to find an overland route from Santa Fe, New Mexico, to their Roman Catholic mission in Monterey, on the coast of modern day central California. Domínguez, Vélez de Escalante, and Bernardo de Miera y Pacheco, acting as the expedition's cartographer, traveled with ten men from Santa Fe through many unexplored portions of the American West, including present-day western Colorado, Utah, and northern Arizona. Along part of the journey, they were aided by three indigenous guides of the Timpanogos tribe (Ute people). The land was harsh and unforgiving, and hardships encountered during travel forced the group to return to Santa Fe before reaching Las Californias. Maps and documentation produced by the expedition aided future travelers. The Domínguez–Escalante route eventually became an early template for the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shale
Shale is a fine-grained, clastic sedimentary rock formed from mud that is a mix of flakes of clay minerals (hydrous aluminium phyllosilicates, e.g. kaolin, Al2 Si2 O5( OH)4) and tiny fragments (silt-sized particles) of other minerals, especially quartz and calcite.Blatt, Harvey and Robert J. Tracy (1996) ''Petrology: Igneous, Sedimentary and Metamorphic'', 2nd ed., Freeman, pp. 281–292 Shale is characterized by its tendency to split into thin layers ( laminae) less than one centimeter in thickness. This property is called '' fissility''. Shale is the most common sedimentary rock. The term ''shale'' is sometimes applied more broadly, as essentially a synonym for mudrock, rather than in the more narrow sense of clay-rich fissile mudrock. Texture Shale typically exhibits varying degrees of fissility. Because of the parallel orientation of clay mineral flakes in shale, it breaks into thin layers, often splintery and usually parallel to the otherwise indistinguishable bed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Green River Formation
The Green River Formation is an Eocene geologic formation that records the sedimentation in a group of intermountain lakes in three basins along the present-day Green River in Colorado, Wyoming, and Utah. The sediments are deposited in very fine layers, a dark layer during the growing season and a light-hue inorganic layer in the dry season. Each pair of layers is called a varve and represents one year. The sediments of the Green River Formation present a continuous record of six million years. The mean thickness of a varve here is 0.18 mm, with a minimum thickness of 0.014 mm and maximum of 9.8 mm.Bradley, W. H. The varves and climate of the Green River epoch: U.S. Geol. Survey Prof. Paper 158, pp 87–110, 1929. The sedimentary layers were formed in a large area named for the Green River, a tributary of the Colorado River. The three separate basins lie around the Uinta Mountains (north, east, and south) of northeastern Utah: * an area in northwestern Colorado ea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountain Passes Of Colorado
This is a list of some important mountain passes in the Rocky Mountains of the U.S. State of Colorado. __TOC__ Mountain passes and highway summits traversed by improved roads Mountain summit highways Mountain passes traversed by unimproved roads Mountain passes traversed by foot trails See also *Colorado ** Bibliography of Colorado **Index of Colorado-related articles This is an alphabetical list of articles related to the U.S. State of Colorado. 0–9 * .co.us – Internet second-level domain for the State of Colorado * 4 Corners ** 4 Corners Monument * 6th Principal Meridian * 10-mile Range * 10t ... ** Outline of Colorado *Colorado statistical areas *Geography of Colorado *History of Colorado *List of counties in Colorado *List of places in Colorado **List of mountain peaks of Colorado **List of mountain ranges of Colorado **List of populated places in Colorado ***List of census-designated places in Colorado ***List of county seats in Colorado ***Lis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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