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Carrizozo Volcanic Field
The Carrizozo volcanic field is a monogenetic volcanic field located in New Mexico, US. The volcanic field consists of two lava flows, the Broken Back flow and the Carrizozo lava flow (Carrizozo Malpais), the second youngest in New Mexico. Both lava flows originated from groups of cinder cones. The Broken Back flow is approximately long and the Carrizozo, one of the largest in the world, is long, covering with a volume of . Carrizozo Malpais The Carrizozo Malpais is a large lava flow on the west side of Carrizozo, New Mexico, on the northern part of the Tularosa Basin between Sierra Blanca to the southeast and the Oscura Mountains to the west. The lava making up the flow came from Little Black Peak, about north-northwest of Carrizozo. It reached about south-southwest along the bottom of Tularosa Basin in two active flows. Initial age estimates ranged from 1,000 to 1,500 years ago, but recent cosmogenic dating techniques revealed the eruption date is 5200 ± 700 years ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lincoln County, New Mexico
Lincoln County is a county in the U.S. state of New Mexico. As of the 2020 census, the population was 20,269. Its county seat is Carrizozo, while its largest community is Ruidoso. History Prior to the creation of Lincoln County, the Mescalero Apache occupied this region. They were confined to a reservation near Fort Stanton in 1873 and to their present reservation, only partly in Lincoln County, in 1883. Much of the commerce of late-19th century Lincoln County consisted of government contracts to provide food and other commodities to the Mescalero and to the soldiers at Fort Stanton. Hispanics from northern New Mexico began moving into the region in the 1850s. Lincoln County was named in honor of President Abraham Lincoln. The country was created in 1869 when Soccoro County was divided into two with Lincoln county in the east. At the time, it was the largest county in area in the United States. The country boundaries were often modified and reduced until 1909 when the pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lava Tube
A lava tube, more rarely called a pyroduct, is a 'roofed conduit through which molten lava travels away from its vent'. If lava in the tube drains out, it will leave an empty cave. Lava tubes are common in low-viscosity volcanic systems. Lava tubes are important as they are able to transport molten lava much further away from the eruptive vent than lava channels. A tube-forming lava flow can emplace on longer distance due to the presence of a solid crust protecting the molten lava from atmospheric cooling. Lava tubes are often considered when preparing hazard maps or managing an eruptive crisis. Formation A lava tube is a type of lava cave formed when a low-viscosity lava flow develops a continuous and hard crust, which thickens and forms a roof above the still-flowing lava stream. Three main formation mechanisms have been described: (1) roofing over a lava channel, (2) pāhoehoe lobe extension or (3) lava flow inflation. # When it erupts from a vent, lava usually flow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jornada Del Muerto
Jornada del Muerto was the name given by the Spanish conquistadors to the Jornada del Muerto desert Endorheic basin, basin, and the almost waterless trail across the Jornada beginning north of Las Cruces, New Mexico, Las Cruces and ending south of Socorro, New Mexico. The name translates from Spanish language, Spanish as "Dead Man's Journey" or "Route of the Dead Man". The trail was part of the Camino Real de Tierra Adentro which led northward from central colonial New Spain, present-day Mexico, to the farthest reaches of the viceroyalty in northern Santa Fe de Nuevo México, Nuevo México Province (the area around the upper valley of the Rio Grande). Spaceport America is located in the middle portion of the Jornada del Muerto at an elevation of . The Trinity (nuclear test), Trinity nuclear test site, the location of the first test of an atomic bomb in 1945 is in the northern portion of the Jornada. Natural history The Jornada del Muerto basin is wide east to west and from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cambridge University Press
Cambridge University Press was the university press of the University of Cambridge. Granted a letters patent by King Henry VIII in 1534, it was the oldest university press in the world. Cambridge University Press merged with Cambridge Assessment to form Cambridge University Press and Assessment under Queen Elizabeth II's approval in August 2021. With a global sales presence, publishing hubs, and offices in more than 40 countries, it published over 50,000 titles by authors from over 100 countries. Its publications include more than 420 academic journals, monographs, reference works, school and university textbooks, and English language teaching and learning publications. It also published Bibles, runs a bookshop in Cambridge, sells through Amazon, and has a conference venues business in Cambridge at the Pitt Building and the Sir Geoffrey Cass Sports and Social Centre. It also served as the King's Printer. Cambridge University Press, as part of the University of Cambridge, was a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geographic Coordinates
A geographic coordinate system (GCS) is a spherical or geodetic coordinate system for measuring and communicating positions directly on Earth as latitude and longitude. It is the simplest, oldest, and most widely used type of the various spatial reference systems that are in use, and forms the basis for most others. Although latitude and longitude form a coordinate tuple like a cartesian coordinate system, the geographic coordinate system is not cartesian because the measurements are angles and are not on a planar surface. A full GCS specification, such as those listed in the EPSG and ISO 19111 standards, also includes a choice of geodetic datum (including an Earth ellipsoid), as different datums will yield different latitude and longitude values for the same location. History The invention of a geographic coordinate system is generally credited to Eratosthenes of Cyrene, who composed his now-lost ''Geography'' at the Library of Alexandria in the 3rd century ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hillsboro, New Mexico
Hillsboro is an Unincorporated area, unincorporated community in Sierra County, New Mexico, Sierra County, New Mexico, United States, located in the southwestern part of the state. It was founded in 1877, following the discovery of gold. The community was the county seat of Sierra County, New Mexico, Sierra County from 1884 until 1936, when Hot Springs (now called Truth or Consequences, New Mexico, Truth or Consequences) became the county seat. The town was named Hillsborough by prospectors in December 1877, but later shortened to Hillsboro. By 1880, the town had four companies of soldiers and 400 miners, but the population soon grew to 700. A county courthouse was built in 1892. By 1907, the population was 1200. A flood on 10 June 1914 caused considerable damage to many town buildings. New Mexico State Road 152 and New Mexico State Road 27, NM 27 intersect in and bisect the town. Geology The first house was built in August 1877 after two prospectors, Dan Dugan and Dave Stitzel, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jornada Del Muerto Volcano
The Jornada del Muerto Volcano is a small shield volcano and lava field in central New Mexico, about in size and reaching an elevation of . Jornada del Muerto means "Dead Man's Route" in Spanish language, Spanish, referring to the desolate colonial era trail from New Spain through this ''Malpaís (landform), Malpaís'' region. Geography The volcano and lava field is located at the northern end of the Jornada del Muerto, Jornada del Muerto Desert Depression (geology), basin in the Basin and Range Province. The Jornada del Muerto basin runs between the Oscura Mountains and San Andres Mountains on the east, with the Caballo Mountains and the Fra Cristobal Range, Fra Cristóbal Range on the west. Geology Volcano and cones The main volcano vent is located slightly to the east of the center of the lava flows, rising about in a broad but conspicuous cone about a mile (1.6 km) in diameter. Within the outer cone are a series of nested Splatter cone, spatter cones interspersed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alkaline Magma Series
The alkaline magma series is a chemically distinct range of magma compositions that describes the evolution of an Alkaline volcanic rock, alkaline mafic magma into a more evolved, silica-rich end member. Geochemical characterization Rocks in the alkaline magma series are distinguished from rocks in the subalkaline tholeiitic and calc-alkaline magma series by their high content of alkali metal oxides (K2O plus Na2O) relative to silica (SiO2). They are distinct from the rare peralkaline volcanic rock, peralkaline magmas, which have excess alkali oxides relative to alumina (Na2O + K2O > Al2O3). Alkaline magmas tend to show high titanium oxide (TiO2) content, typically in excess of 3% by weight. Other incompatible elements, such as phosphorus and LREE, light rare earth elements, are also elevated. This is attributed to a very low degree of partial melting of the source rock, with only 5% or less of the source rock going into the magma melt. Petrography All alkaline series magmas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Upper Mantle
The upper mantle of Earth is a very thick layer of rock inside the planet, which begins just beneath the crust (geology), crust (at about under the oceans and about under the continents) and ends at the top of the lower mantle (Earth), lower mantle the . Temperatures range from approximately at the upper boundary with the crust to approximately at the boundary with the lower mantle. Upper mantle material that has come up onto the surface comprises about 55% olivine, 35% pyroxene, and 5 to 10% of calcium oxide and aluminum oxide minerals such as plagioclase, spinel, or garnet, depending upon depth. Seismic structure The density profile through Earth is determined by the velocity of seismic waves. Density increases progressively in each layer, largely due to compression of the rock at increased depths. Abrupt changes in density occur where the material composition changes. The upper mantle begins just beneath the crust and ends at the top of the lower mantle. The upper mantl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magma
Magma () is the molten or semi-molten natural material from which all igneous rocks are formed. Magma (sometimes colloquially but incorrectly referred to as ''lava'') is found beneath the surface of the Earth, and evidence of magmatism has also been discovered on other terrestrial planets and some natural satellites. Besides molten rock, magma may also contain suspended crystals and volcanic gas, gas bubbles. Magma is produced by melting of the mantle (geology), mantle or the Crust (geology), crust in various tectonics, tectonic settings, which on Earth include subduction zones, continental rift (geology), rift zones, mid-ocean ridges and Hotspot (geology), hotspots. Mantle and crustal melts migrate upwards through the crust where they are thought to be stored in magma chambers or trans-crustal crystal mush, crystal-rich mush zones. During magma's storage in the crust, its composition may be modified by Fractional crystallization (geology), fractional crystallization, contaminati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Faulting
In geology, a fault is a planar fracture or discontinuity in a volume of rock across which there has been significant displacement as a result of rock-mass movements. Large faults within Earth's crust result from the action of plate tectonic forces, with the largest forming the boundaries between the plates, such as the megathrust faults of subduction zones or transform faults. Energy release associated with rapid movement on active faults is the cause of most earthquakes. Faults may also displace slowly, by aseismic creep. A ''fault plane'' is the plane that represents the fracture surface of a fault. A ''fault trace'' or ''fault line'' is a place where the fault can be seen or mapped on the surface. A fault trace is also the line commonly plotted on geological maps to represent a fault. A ''fault zone'' is a cluster of parallel faults. However, the term is also used for the zone of crushed rock along a single fault. Prolonged motion along closely spaced faults can blur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Earth's Crust
Earth's crust is its thick outer shell of rock, referring to less than one percent of the planet's radius and volume. It is the top component of the lithosphere, a solidified division of Earth's layers that includes the crust and the upper part of the mantle. The lithosphere is broken into tectonic plates whose motion allows heat to escape the interior of Earth into space. The crust lies on top of the mantle, a configuration that is stable because the upper mantle is made of peridotite and is therefore significantly denser than the crust. The boundary between the crust and mantle is conventionally placed at the Mohorovičić discontinuity, a boundary defined by a contrast in seismic velocity. The temperature of the crust increases with depth, reaching values typically in the range from about at the boundary with the underlying mantle. The temperature increases by as much as for every kilometer locally in the upper part of the crust. Composition File:Elementa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
