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La Sal Range
The La Sal Mountains or La Sal Range is 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 other ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arches National Park
Arches National Park is a List of national parks of the United States, national park of the United States in eastern Utah. The park is adjacent to the Colorado River, north of Moab, Utah. The park contains more than 2,000 natural arch, natural sandstone arches, including the well-known Delicate Arch, which constitute the highest density of natural arches in the world. It also contains a variety of other unique geological resources and formations. The national park lies above an underground evaporite layer or salt bed, which is the main cause of the formation of the arches, spires, balanced rocks, sandstone Fin (geology), fins, and eroded monoliths in the area. The park consists of of high desert located on the Colorado Plateau. The highest elevation in the park is at Elephant Butte (Arches National Park), Elephant Butte, and the lowest elevation is at the visitor center. The park receives an average of less than of rain annually. Administered by the National Park Service, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diorite
Diorite ( ) is an intrusive rock, intrusive igneous rock formed by the slow cooling underground of magma (molten rock) that has a moderate content of silica and a relatively low content of alkali metals. It is Intermediate composition, intermediate in composition between low-silica (mafic) gabbro and high-silica (felsic) granite. Diorite is found in mountain-building belts (''orogens'') on the margins of continents. It has the same composition as the fine-grained volcanic rock, andesite, which is also common in orogens. Diorite has been used since prehistoric times as decorative stone. It was used by the Akkadian Empire of Sargon of Akkad for funerary sculptures, and by many later civilizations for sculptures and building stone. Description Diorite is an intrusive rock, intrusive igneous rock composed principally of the silicate minerals plagioclase feldspar (typically andesine), biotite, hornblende, and sometimes pyroxene. The chemical composition of diorite is Intermedia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Tukuhnikivatz
Mount Tukuhnikivatz is a 12,482-foot (3,805 meter) elevation summit located in San Juan County of Utah, United States. Mount Tukuhnikivatz is the third-highest peak of the La Sal Mountains, and is the premier ski mountaineering destination in the La Sals.Jared Hargrave, ''Backcountry Ski & Snowboard Routes Utah'', The Mountaineers Books, 2015 It is situated in a dry, rugged, sparsely settled region, and set on land administered by Manti-La Sal National Forest. Precipitation runoff from this mountain drains into tributaries of the Colorado River. The nearest town is Moab, to the northwest, and the nearest higher neighbor is Mount Peale, to the east. The mountain's name is a Native American word that translates as "Where the sun sets last." Locals call it Mount Tuk for short. This mountain has a subsidiary peak unofficially called ''Little Tuk'' (12,048 feet), approximately one-half mile to the north-northwest. Climate Spring and fall are the most favorable seasons to visit M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Mellenthin
Mount Mellenthin is a 12,645-foot (3,854 meter) elevation summit located in San Juan County, Utah, San Juan County of Utah, United States. Mount Mellenthin is the second-highest peak of the La Sal Mountains, and second-highest in the county. It is situated in a dry, rugged, sparsely settled region, and set on land administered by Manti-La Sal National Forest. Precipitation Surface runoff, runoff from this mountain drains into tributaries of the Colorado River. The nearest town is Moab, Utah, Moab, to the northwest, and the nearest higher neighbor is Mount Peale, to the south. The mountain's name honors Rudolf E. Mellenthin (1884–1918), forest ranger of La Sal National Forest, who was shot to death near this peak on August 23, 1918, while attempting to apprehend two draft evaders. This geographical feature's toponym was officially adopted in 1932 by the U.S. Board on Geographic Names. Climate Spring and fall are the most favorable seasons to visit Mount Mellenthin. According t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ute Mountain
Ute Mountain, also known as Ute Peak or Sleeping Ute Mountain (; Ute: ''Wisuv Káruv'', Navajo: ''Dził Naajiní''), is a peak within the Ute Mountains, a small mountain range in the southwestern corner of Colorado. It is on the northern edge of the Ute Mountain Ute Tribe Reservation. The Reservation forms the southwestern corner of the state and of Montezuma County. Nomenclature for this peak and its range varies. The highest peak is sometimes known as Sleeping Ute Mountain; the entire range is also identified as one large mountain, called Sleeping Ute Mountain, on some maps; and the range is sometimes called the Sleeping Ute Mountains. All of these forms of the mountain's name and of the range's name can be found on various USGS maps, databases and reports. The Ute Mountains, with a collective profile commonly known as "The Sleeping Ute", are a dense cluster of peaks approximately in extent and stand in isolation from other mountains. Despite being much lower than C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carrizo Mountains
The Carrizo Mountains (36°50' N, 109°7'W) is a small, mostly circular mountain range 15 to 20 km (9 to 12 miles) in diameter located on the Colorado Plateau in northeastern Arizona. The range is about southwest of the Four Corners. The highest summit, Pastora Peak, is in elevation, whereas elevations on the surrounding plateau are near . The mountains are within the Navajo Nation. Teec Nos Pos, Arizona, the closest community, is adjacent at the northern foothills, on Teec Nos Pos Wash, from Pastora Peak, about 5-mi miles to the north from the mountain's perimeter; Teec Nos Pos had about 800 inhabitants in the 2000 census. Geology The Carrizo Mountains primarily consist of igneous rocks that intruded Permian through Cretaceous marine strata. The most common igneous rock type is porphyritic hornblende diorite. Intrusive forms include laccoliths, stocks, sills, and dikes. Ages of the igneous rocks range from 70 to 74 million years. Similar igneous-cored ranges of the C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henry Mountains
The Henry Mountains is a mountain range located in the southeastern portion of the U.S. state of Utah that runs in a generally north-south direction, extending over a distance of about . They were named by Almon Thompson in honor of Joseph Henry, the first secretary of the Smithsonian Institution. The nearest towns are Bicknell, Torrey, and Hanksville, which is north of the mountains. The Henry Mountains were the last mountain range to be added to the map of the 48 contiguous U.S. states (1872), and before their official naming by Thompson were sometimes referred to as the "Unknown Mountains." In Navajo, the range is still referred to as ''Dził Bizhiʼ Ádiní'' ("mountain whose name is missing"). Most lands within the Henry Mountains are federally owned, public lands administered by the U.S. Bureau of Land Management. A herd of 350 American Bison roams freely in the Henrys. Geography and geology The range is clustered into two main groups, with Highway 276 dividing the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abajo Mountains
The Abajo Mountains, sometimes referred to as the Blue Mountains, are a small mountain range west of Monticello, Utah, south of Canyonlands National Park and north of Blanding, Utah. The mountain range is located within the Manti–La Sal National Forest. The highest point within the range is Abajo Peak at . This mountain range, like both the La Sal Range and Henry Mountains in the same part of the Colorado Plateau, is formed about igneous intrusions that are relatively resistant to erosion. Some of these intrusions form laccoliths emplaced at depths of a few kilometers. The predominant igneous rock is porphyritic hornblende diorite. Ages of intrusion in the Abajo Mountains fall in the interval from 22 to 29 million years. These mountain ranges are part of the Colorado Plateau province west of the greater ranges of the Rocky Mountains The Rocky Mountains, also known as the Rockies, are a major mountain range and the largest mountain system in North America. The Rocky M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colorado Plateau
The Colorado Plateau is a physiographic and desert region of the Intermontane Plateaus, roughly centered on the Four Corners region of the Southwestern United States. This plateau covers an area of 336,700 km2 (130,000 mi2) within western Colorado, northwestern New Mexico, southern and eastern Utah, northern Arizona, and a tiny fraction in the extreme southeast of Nevada. About 90% of the area is drained by the Colorado River and its main tributaries: the Green, San Juan, and Little Colorado. Most of the remainder of the plateau is drained by the Rio Grande and its tributaries. The Colorado Plateau is largely made up of high desert, with scattered areas of forests. In the south-west corner of the Colorado Plateau, nicknamed High Country, lies the Grand Canyon of the Colorado River. Much of the Plateau's landscape is related to the Grand Canyon in both appearance and geologic history. The nickname "Red Rock Country" suggests the brightly colored rock left bare to t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cretaceous
The Cretaceous ( ) is a geological period that lasted from about 143.1 to 66 mya (unit), million years ago (Mya). It is the third and final period of the Mesozoic Era (geology), Era, as well as the longest. At around 77.1 million years, it is the ninth and longest geological period of the entire Phanerozoic. The name is derived from the Latin , 'chalk', which is abundant in the latter half of the period. It is usually abbreviated K, for its German translation . The Cretaceous was a period with a relatively warm climate, resulting in high Sea level#Local and eustatic, eustatic sea levels that created numerous shallow Inland sea (geology), inland seas. These oceans and seas were populated with now-extinct marine reptiles, ammonites, and rudists, while dinosaurs continued to dominate on land. The world was largely ice-free, although there is some evidence of brief periods of glaciation during the cooler first half, and forests extended to the poles. Many of the dominant taxonomic gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Permian
The Permian ( ) is a geologic period and System (stratigraphy), stratigraphic system which spans 47 million years, from the end of the Carboniferous Period million years ago (Mya), to the beginning of the Triassic Period 251.902 Mya. It is the sixth and last period of the Paleozoic Era; the following Triassic Period belongs to the Mesozoic Era. The concept of the Permian was introduced in 1841 by geologist Sir Roderick Murchison, who named it after the Perm Governorate, region of Perm in Russia. The Permian witnessed the diversification of the two groups of amniotes, the synapsids and the Sauropsida, sauropsids (reptiles). The world at the time was dominated by the supercontinent Pangaea, which had formed due to the collision of Euramerica and Gondwana during the Carboniferous. Pangaea was surrounded by the superocean Panthalassa. The Carboniferous rainforest collapse left behind vast regions of desert within the continental interior. Amniotes, which could better cope with these ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laccolith
A laccolith is a body of intrusive rock with a dome-shaped upper surface and a level base, fed by a conduit from below. A laccolith forms when magma (molten rock) rising through the Earth's crust begins to spread out horizontally, prying apart the host rock strata. The pressure of the magma is high enough that the overlying strata are forced upward, giving the laccolith its dome-like form. Over time, erosion can expose the solidified laccolith, which is typically more resistant to weathering than the host rock. The exposed laccolith then forms a hill or mountain. The Henry Mountains of Utah, US, are an example of a mountain range composed of exposed laccoliths. It was here that geologist Grove Karl Gilbert carried out pioneering field work on this type of intrusion. Laccolith mountains have since been identified in many other parts of the world. Description A laccolith is a type of igneous intrusion, formed when magma forces its way upwards through the Earth's crust but cool ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
