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1934 Hansel Valley Earthquake
The 1934 Hansel Valley earthquake occurred on March 12 at approximately 8:05 a.m. MST with a moment magnitude of 6.6 and a maximum Mercalli intensity of VIII (''Severe''). The shock originated in the Hansel Valley at the north end of the Great Salt Lake in Utah in the United States. Damage was mostly confined to vulnerable buildings, and two people died. The dip-slip (normal) fault that generated the shock ruptured the surface of the ground and other geologic features were documented. A large aftershock occurred three hours after the initial event and may have caused additional damage. Tectonic setting Situated in southern Nevada, Utah, Idaho, western Wyoming and western Montana, the Intermountain Seismic Belt (ISB) is a region of crustal stretching and intraplate deformation. This results in a zone of active tectonics, with uplift in the mountains and comparative subsidence in the valleys. This area follows California and Western Nevada in the lower 48 states in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountain Time Zone
The Mountain Time Zone of North America keeps time by subtracting seven hours from Coordinated Universal Time (UTC) when standard time ( UTC−07:00) is in effect, and by subtracting six hours during daylight saving time ( UTC−06:00). The clock time in this zone is based on the mean solar time at the 105th meridian west of the Greenwich Observatory. In the United States, the exact specification for the location of time zones and the dividing lines between zones is set forth in the Code of Federal Regulations at 49 CFR 71. In the United States and Canada, this time zone is generically called Mountain Time (MT). Specifically, it is Mountain Standard Time (MST) when observing standard time, and Mountain Daylight Time (MDT) when observing daylight saving time. The term refers to the Rocky Mountains, which range from British Columbia to New Mexico. In Mexico, this time zone is known as the or ("Pacific Zone"). In the US and Canada, the Mountain Time Zone is to the east of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cheyenne, Wyoming
Cheyenne ( or ) is the capital and most populous city of the U.S. state of Wyoming, as well as the county seat of Laramie County, with 65,132 residents, per the 2020 US Census. It is the principal city of the Cheyenne metropolitan statistical area which encompasses all of Laramie County and had 100,512 residents as of the 2020 census. Local residents named the town for the Cheyenne Native American people in 1867 when it was founded in the Dakota Territory. Cheyenne is the northern terminus of the extensive Southern Rocky Mountain Front, which extends southward to Albuquerque, New Mexico, and includes the fast-growing Front Range Urban Corridor. Cheyenne is situated on Crow Creek and Dry Creek. History At a celebration on July 4, 1867, Grenville M. Dodge of the Union Pacific Railroad announced the selection of a townsite for its mountain region headquarters adjacent to the bridge the railroad planned to build across Crow Creek in the Territory of Dakota. At the sa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Earthquake Engineering
Earthquake engineering is an interdisciplinary branch of engineering that designs and analyzes structures, such as buildings and bridges, with earthquakes in mind. Its overall goal is to make such structures more resistant to earthquakes. An earthquake (or seismic) engineer aims to construct structures that will not be damaged in minor shaking and will avoid serious damage or collapse in a major earthquake. Earthquake engineering is the scientific field concerned with protecting society, the natural environment, and the man-made environment from earthquakes by limiting the seismic risk to socio-economically acceptable levels. Traditionally, it has been narrowly defined as the study of the behavior of structures and geo-structures subject to seismic loading; it is considered as a subset of structural engineering, geotechnical engineering, mechanical engineering, chemical engineering, applied physics, etc. However, the tremendous costs experienced in recent earthquakes have led to an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salt Lake City And County Building
The Salt Lake City and County Building, usually called the "City-County Building", is the seat of government for Salt Lake City, Utah. The historic landmark formerly housed offices for Salt Lake County government as well, hence the name. History The building was originally constructed by free masons between 1891 and 1894 to house offices for the city and county of Salt Lake and replace the Salt Lake City Council Hall and Salt Lake County Courthouse, both erected in the 1860s. Construction of the building was riddled with controversy. During the late 19th and early 20th centuries the City and County Building was the symbol of non-Mormon citizens' open defiance of the Church of Jesus Christ of Latter-day Saints. It was designed to rival the Salt Lake Temple as the city's architectural centerpiece. It is even thought that the building's clock tower and statues were designed to mimic the temple's spires and statue of the angel Moroni. Ironically, the building was originally the 1880 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transtension
Transtension is the state in which a rock mass or area of the Earth's crust experiences both ''extensive'' and ''transtensive'' shear. As such, transtensional regions are characterised by both extensional structures ( normal faults, grabens) and wrench structures (strike-slip faults). In general, many tectonic regimes that were previously defined as simple strike-slip shear zones are actually transtensional. It is unlikely that a deforming body will experience 'pure' extension or 'pure' strike-slip. Transtensional shear zones are characterized by the co-existence of different structures, related to both strike-slip shear and extension. End member structures include pure strike-slip faults and purely extensional ("normal") dip-slip faults. Faults which have components of both (termed 'oblique' slip faults) are abundant. Releasing bend ''Releasing bends'' are transtensional structures that form where the orientation of a strike-slip fault becomes oblique to the regional slip vector ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seismic Source
A seismic source is a device that generates controlled seismic energy used to perform both reflection and refraction seismic surveys. A seismic source can be simple, such as dynamite, or it can use more sophisticated technology, such as a specialized air gun. Seismic sources can provide single pulses or continuous sweeps of energy, generating seismic waves, which travel through a medium such as water or layers of rocks. Some of the waves then reflect and refract and are recorded by receivers, such as geophones or hydrophones. Seismic sources may be used to investigate shallow subsoil structure, for engineering site characterization, or to study deeper structures, either in the search for petroleum and mineral deposits, or to map subsurface faults or for other scientific investigations. The returning signals from the sources are detected by seismic sensors (geophones or hydrophones) in known locations relative to the position of the source. The recorded signals are then subjected ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Borehole
A borehole is a narrow shaft bored in the ground, either vertically or horizontally. A borehole may be constructed for many different purposes, including the extraction of water ( drilled water well and tube well), other liquids (such as petroleum), or gases (such as natural gas). It may also be part of a geotechnical investigation, environmental site assessment, mineral exploration, temperature measurement, as a pilot hole for installing piers or underground utilities, for geothermal installations, or for underground storage of unwanted substances, e.g. in carbon capture and storage. Importance Engineers and environmental consultants use the term ''borehole'' to collectively describe all of the various types of holes drilled as part of a geotechnical investigation or environmental site assessment (a so-called Phase II ESA). This includes holes advanced to collect soil samples, water samples or rock cores, to advance ''in situ'' sampling equipment, or to install monitoring ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vertical Seismic Profile
In geophysics, vertical seismic profile (VSP) is a technique of seismic measurements used for correlation with surface seismic data. The defining characteristic of a VSP (of which there are many types) is that either the energy source, or the detectors (or sometimes both) are in a borehole. In the most common type of VSP, hydrophones, or more often geophones or accelerometers, in the borehole record reflected seismic energy originating from a seismic source at the surface. There are numerous methods for acquiring a vertical seismic profile (VSP). Zero-offset VSPs (A) have sources close to the wellbore directly above receivers. Offset VSPs (B) have sources some distance from the receivers in the wellbore. Walkaway VSPs (C) feature a source that is moved to progressively farther offset and receivers held in a fixed location. Walk-above VSPs (D) accommodate the recording geometry of a deviated well, having each receiver in a different lateral position and the source directly above the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snowville, Utah
Snowville is a town in Box Elder County, Utah, United States. The population was 167 at the 2010 census. Geography Snowville is located at an elevation of . According to the United States Census Bureau, the town has a total area of , all land. Climate According to the Köppen Climate Classification system, Snowville has a warm-summer continental climate (''Dfb''). Demographics As of the census of 2000, there were 177 people, 59 households, and 46 families residing in the town. The population density was 115.4 people per square mile (44.7/km2). There were 71 housing units at an average density of 46.3 per square mile (17.9/km2). The racial makeup of the town was 88.70% White, 0.56% Asian, 9.60% from other races, and 1.13% from two or more races. Hispanic or Latino of any race were 19.21% of the population. There were 59 households, out of which 47.5% had children under the age of 18 living with them, 62.7% were married couples living together, 10.2% had a female householde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Locomotive Springs Wildlife Management Area
Locomotive Springs Wildlife Management Area is a protected area in Utah, 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 states, a federal district, five major unincorporated territorie .... References Protected areas of Utah {{Utah-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kosmo, Utah
Kosmo (also spelled Kosmos or Cosmo) is a ghost town in Box Elder County, Utah, United States. The town was built in two sections, with the east end built in 1901 to serve as a rail spur of the First transcontinental railroad North America's first transcontinental railroad (known originally as the "Pacific Railroad" and later as the " Overland Route") was a continuous railroad line constructed between 1863 and 1869 that connected the existing eastern U.S. rail netwo ... for the ranchers in the area. Background The western part of the town was constructed in 1912, about one-half mile from the east part, as a spur for potash mining. Potash had become difficult to acquire during World War I, as its major producer was Germany. The Salt Lake Potash Company was established to combat the shortages and built ponds, canals, a rail spur and processing station in West Kosmo. In addition, three bunkhouses, a cookhouse, garage, stock corral, general store, blacksmith and coal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kelton, Utah
Kelton is a ghost town, just north of the Great Salt Lake, in the Park Valley area of Box Elder County, Utah, United States. The town was inhabited during the period of 1869–1942. Once an important section station on the First transcontinental railroad, Kelton was dependent on the railroad throughout its history. The town suffered serious setbacks in the 1880s when its busy stagecoach route to Boise, Idaho was discontinued, and in the 1900s when the Lucin Cutoff left it off the main rail line. The strongest earthquake in Utah history caused severe damage in 1934, but Kelton ceased to exist only when the rails were completely removed during World War II. History The site was first settled under the name of Indian Creek, when the mostly-Chinese work crew of the Central Pacific Railroad arrived on April 12, 1869, less than a month before the driving of the golden spike. When the post office was established here on December 16, 1869, it was named Kelton, after an early stockman ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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