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Bisbee Group
The Bisbee Group is a geologic group in Arizona, Mexico, and New Mexico. It preserves fossils dating back to the early Cretaceous period. Description The group consists of sandstone, claystone, limestone, and conglomerate, with a maximum thickness of in the Chiricahua Mountains. In the Tombstone, Arizona, area, it overlies the Naco Formation. In the Bisbee area, the group is divided into four formations, which in ascending stratigraphic order are the Glance Conglomerate, the Morita Formation, the Mural Limestone, and the Cintura Formation. These extend into northern Sonora. The group is overlain by the Bronco Volcanics, the Nipper Formation, or the Faraway Ranch Formation. In the Chiricahua Mountains, where the thickest section is found, the Crystal Cave Formation and Onion Saddle Formation are found between the Glance Conglomerate and the Morita Formation. A thrust fault has placed the lower Jurassic beds over the Cretaceous beds. In southwestern New Mexico, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Group (stratigraphy)
In geology, a group is a lithostratigraphic unit consisting of a series of related formations that have been classified together to form a group. Formations are the fundamental unit of stratigraphy. Groups may sometimes be combined into supergroups. Groups are useful for showing relationships between formations, and they are also useful for small-scale mapping or for studying the stratigraphy of large regions. Geologists exploring a new area have sometimes defined groups when they believe the strata within the groups can be divided into formations during subsequent investigations of the area. It is possible for only some of the strata making up a group to be divided into formations. An example of a group is the Glen Canyon Group, which includes (in ascending order) the Wingate Sandstone, the Moenave Formation, the Kayenta Formation, and the Navajo Sandstone. Each of the formations can be distinguished from its neighbor by its lithology, but all were deposited in the same vast ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fossils
A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in amber, hair, petrified wood and DNA remnants. The totality of fossils is known as the ''fossil record''. Paleontology is the study of fossils: their age, method of formation, and evolutionary significance. Specimens are usually considered to be fossils if they are over 10,000 years old. The oldest fossils are around 3.48 billion years old to 4.1 billion years old. Early edition, published online before print. The observation in the 19th century that certain fossils were associated with certain rock strata led to the recognition of a geological timescale and the relative ages of different fossils. The development of radiometric dating techniques in the early 20th century allowed scientists to quantitatively measure the absolute ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hell-to-Finish Formation
The Hell-to-Finish Formation is a geologic formation in southwestern New Mexico. It preserves fossils dating back to the early Cretaceous period. Description The formation consists mostly of red to red-brown to gray or green shale, mudstone, and arkosic siltstone. The base of the formation is a well indurated conglomerate derived from the underlying Paleozoic beds. Minor arkose and limestone are present in the uppermost beds. The total thickness is up to but varies considerably over the region. The formation rests on a profound unconformity with underlying Paleozoic formations in most locations, but overlies the Broken Jug Formation in the Little Hatchet Mountains. The Hell-to-Finish Formation is transitional to the overlying U-Bar Formation. The transitional contact with the Aptian U-Bar Formation suggests that the Hell-to-Finish Formation cannot be much older than Aptian. The formation is interpreted as being deposited in an arid client, based on the nature of pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thrust Fault
A thrust fault is a break in the Earth's crust, across which older rocks are pushed above younger rocks. Thrust geometry and nomenclature Reverse faults A thrust fault is a type of reverse fault that has a dip of 45 degrees or less. If the angle of the fault plane is lower (often less than 15 degrees from the horizontal) and the displacement of the overlying block is large (often in the kilometer range) the fault is called an ''overthrust'' or ''overthrust fault''. Erosion can remove part of the overlying block, creating a ''fenster'' (or ''window'') – when the underlying block is exposed only in a relatively small area. When erosion removes most of the overlying block, leaving island-like remnants resting on the lower block, the remnants are called ''klippen'' (singular ''klippe''). Blind thrust faults If the fault plane terminates before it reaches the Earth's surface, it is referred to as a ''blind thrust'' fault. Because of the lack of surface evidence, blind thr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Onion Saddle Formation
An onion (''Allium cepa'' L., from Latin ''cepa'' meaning "onion"), also known as the bulb onion or common onion, is a vegetable that is the most widely cultivated species of the genus '' Allium''. The shallot is a botanical variety of the onion which was classified as a separate species until 2010. Its close relatives include garlic, scallion, leek, and chive. This genus also contains several other species variously referred to as onions and cultivated for food, such as the Japanese bunching onion (''Allium fistulosum''), the tree onion (''A.'' × ''proliferum''), and the Canada onion (''Allium canadense''). The name '' wild onion'' is applied to a number of ''Allium'' species, but ''A. cepa'' is exclusively known from cultivation. Its ancestral wild original form is not known, although escapes from cultivation have become established in some regions. The onion is most frequently a biennial or a perennial plant, but is usually treated as an annual and harvested ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crystal Cave Formation
A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions. In addition, macroscopic single crystals are usually identifiable by their geometrical shape, consisting of flat faces with specific, characteristic orientations. The scientific study of crystals and crystal formation is known as crystallography. The process of crystal formation via mechanisms of crystal growth is called crystallization or solidification. The word ''crystal'' derives from the Ancient Greek word (), meaning both " ice" and " rock crystal", from (), "icy cold, frost". Examples of large crystals include snowflakes, diamonds, and table salt. Most inorganic solids are not crystals but polycrystals, i.e. many microscopic crystals fused together into a single solid. Polycrystals include most metals, rocks, ceramics, and ice. A thi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Faraway Ranch Formation
Faraway may refer to: Music * " Faraway (Hoshi ni Negai o)", a song by Gackt, 2009 * "Faraway", a song by Jay Chou from ''Still Fantasy ''Still Fantasy'' () is the seventh studio album by Taiwanese singer Jay Chou, released on 5 September 2006 by Sony Music Taiwan & Alfa Music. The album was nominated for three Golden Melody Awards. The album also won an IFPI Hong Kong Top Sales ...'' * "Faraway", a song by Miz * "Faraway", a song from ''Little Busters!'' * "Faraway Vol.2", a song by Apocalyptica from '' Reflections'' Places * Faraway How, a nunatak in Greenland * Faraway, two homesteads in Western Australia Other uses * '' Faraway: Puzzle Escape'', a 2017 video game * Faraway Farm, a historic home near Martinsburg, West Virginia, US * '' Empire Faraway'', a UK Empire ship See also * * Far Away (other) * Far Far Away (other) {{Disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nipper Formation
Nipper (1884 – September 1895) was a dog from Bristol, England, who served as the model for an 1898 painting by Francis Barraud titled '' His Master's Voice''. This image became one of the world's best known trademarks, the famous dog-and-gramophone that was used by several record companies and their associated company brands, including Berliner Gramophone and its various affiliates and successors, including Berliner's German subsidiary Deutsche Grammophon; Berliner's American successor the Victor Talking Machine Co. (later known as RCA Victor and then RCA Records); Zonophone; Berliner's (and later Victor's) British affiliate the Gramophone Co. Ltd. (informally known as His Master's Voice) and its successors EMI and HMV Retail Ltd.; the Gramophone Co.'s German subsidiary Electrola; and onetime Victor subsidiary the Japan Victor Company (JVC). Biography Nipper was born in 1884 in Bristol, England, and died in September 1895. He was likely a mixed-breed dog, alt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sonora
Sonora (), officially Estado Libre y Soberano de Sonora ( en, Free and Sovereign State of Sonora), is one of the 31 states which, along with Mexico City, comprise the Administrative divisions of Mexico, Federal Entities of Mexico. The state is divided into Municipalities of Sonora, 72 municipalities; the capital (and largest) city of which being Hermosillo, located in the center of the state. Other large cities include Ciudad Obregón, Nogales, Sonora, Nogales (on the Mexico–United States border, Mexico-United States border), San Luis Río Colorado, and Navojoa. Sonora is bordered by the states of Chihuahua (state), Chihuahua to the east, Baja California to the northwest and Sinaloa to the south. To the north, it shares the Mexico–United States border, U.S.–Mexico border primarily with the state of Arizona with a small length with New Mexico, and on the west has a significant share of the coastline of the Gulf of California. Sonora's natural geography is divided into three ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tombstone, Arizona
Tombstone is a historic city in Cochise County, Arizona, United States, founded in 1877 by prospector Ed Schieffelin in what was then Pima County, Arizona Territory. It became one of the last boomtowns in the American frontier. The town grew significantly into the mid-1880s as the local mines produced $40 to $85 million in silver bullion, the largest productive silver district in Arizona. Its population grew from 100 to around 14,000 in less than seven years. It is best known as the site of the Gunfight at the O.K. Corral and presently draws most of its revenue from tourism. It also houses the highest-rated brewery in the state of Arizona. The town was established on Goose Flats, a mesa above the Goodenough Mine. Within two years of its founding, although far distant from any other metropolitan area, Tombstone had a bowling alley, four churches, an ice house, a school, two banks, three newspapers, and an ice cream parlor, alongside 110 saloons, 14 gambling halls, and numerous ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chiricahua Mountains
The Chiricahua Mountains massif is a large mountain range in southeastern Arizona which is part of the Basin and Range province of the west and southwestern United States and northwest Mexico; the range is part of the Coronado National Forest. The highest point, Chiricahua Peak, rises above sea level, approximately above the surrounding valleys. The range takes its name from the Chiricahua Apaches native to the region. The Chiricahua Mountains and other associated ranges, along with Sulphur Springs Valley on the west and the San Simon Valley on the east, form the eastern half of Cochise County in southeast Arizona. The Pedregosa Mountains are found at the southern end of the Chiricahua Mountains, while the Swisshelm Mountains are located to the southwest. The northwest end of the Chiricahua mountains continue as the Dos Cabezas Mountains beyond Apache Pass and the Fort Bowie National Historic Site. Access to the Chiricahua Mountains and Coronado National Forest is through W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conglomerate (geology)
Conglomerate () is a clastic sedimentary rock that is composed of a substantial fraction of rounded to subangular gravel-size clasts. A conglomerate typically contains a matrix of finer-grained sediments, such as sand, silt, or clay, which fills the interstices between the clasts. The clasts and matrix are typically cemented by calcium carbonate, iron oxide, silica, or hardened clay. Conglomerates form by the consolidation and lithification of gravel. They can be found in sedimentary rock sequences of all ages but probably make up less than 1 percent by weight of all sedimentary rocks. In terms of origin and depositional mechanisms, they are closely related to sandstones and exhibit many of the same types of sedimentary structures, e.g., tabular and trough cross-bedding and graded bedding.Boggs, S. (2006) ''Principles of Sedimentology and Stratigraphy.'', 2nd ed. Prentice Hall, New York. 662 pp. Friedman, G.M. (2003) ''Classification of sediments and sedimentary rocks.'' In G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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