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Hermosa Group
The Hermosa Group is a group of geologic formations in Utah and Colorado. It preserves fossils dating back to the Carboniferous period. See also * List of fossiliferous stratigraphic units in Utah * Paleontology in Utah The location of the state of Utah Paleontology in Utah refers to paleontological research occurring within or conducted by people from the U.S. state of Utah. Utah has a rich fossil record spanning almost all of the geologic column. During the ... References * Carboniferous geology of Utah {{Carboniferous-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hermosa, Colorado
Hermosa is an unincorporated community in La Plata County, Colorado, United States. It is located north of Durango along U.S. Highway 550. History The community was established around 1874 and had a post office from 1876 to 1900. Residents are now served by post offices in Durango. In 2018, the 416 Fire burned northwest of Hermosa, prompting evacuations. Attractions The Durango and Silverton Narrow Gauge Railroad has a water stop in Hermosa, and the railroad maintains a maintenance yard and a siding there, which is sometimes called the Hermosa Depot. The yard has a prominent railroad water tank that is easily seen by motorists passing through Hermosa on Highway 550. Hermosa Creek passes through the community from west to east and has its confluence with the Animas River nearby. The Hermosa Cliffs, formed of red sandstone, line the river valley in Hermosa. See also * Durango Micropolitan Statistical Area The Durango Micropolitan Statistical Area is a United States Census ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinkerton Trail Formation
The Pinkerton Trail Formation is a geologic formation that is found in the Four Corners region of the United States. It contains fossils characteristic of the Atokan and Desmoinesian Ages of the Pennsylvanian. Description The Pinkerton Trail Formation is the lowest member of the Hermosa Group, a group of geological formations deposited in the interior and margins of the Paradox basin during the Pennsylvanian. The Pinkerton Trail Formation consists of gray limestone with occasional beds of black shale. North of Durango, it contains significant clastic sediments. It rests on the Molas Formation and is overlain by the Paradox Formation. Its thickness is up to in the subsurface. The formation is exposed in the Durango, Colorado area and is present in the subsurface in the San Juan basin and the Paradox basin. It was deposited by the advance of the sea (a '' transgression'') over the region, which deposited limestone atop the continental sediments of the Molas Formation. F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Fossiliferous Stratigraphic Units In Utah
This article contains a list of fossil-bearing stratigraphic units in the state of Utah, U.S. Sites See also * Paleontology in Utah References * {{DEFAULTSORT:Fossiliferous stratigraphic units in Utah Utah Stratigraphic units A stratigraphic unit is a volume of Rock (geology), rock of identifiable origin and relative age range that is defined by the distinctive and dominant, easily mapped and recognizable petrology, petrographic, lithology, lithologic or paleontology, p ... Stratigraphy of Utah Utah geography-related lists United States geology-related lists ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Period (geology)
The geologic time scale, or geological time scale, (GTS) is a representation of time based on the rock record of Earth. It is a system of chronological dating that uses chronostratigraphy (the process of relating strata to time) and geochronology (scientific branch of geology that aims to determine the age of rocks). It is used primarily by Earth scientists (including geologists, paleontologists, geophysicists, geochemists, and paleoclimatologists) to describe the timing and relationships of events in geologic history. The time scale has been developed through the study of rock layers and the observation of their relationships and identifying features such as lithologies, paleomagnetic properties, and fossils. The definition of standardized international units of geologic time is the responsibility of the International Commission on Stratigraphy (ICS), a constituent body of the International Union of Geological Sciences (IUGS), whose primary objective is to precisely define ... [...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] |
Formation (geology)
A geological formation, or simply formation, is a body of rock having a consistent set of physical characteristics ( lithology) that distinguishes it from adjacent bodies of rock, and which occupies a particular position in the layers of rock exposed in a geographical region (the stratigraphic column). It is the fundamental unit of lithostratigraphy, the study of strata or rock layers. A formation must be large enough that it can be mapped at the surface or traced in the subsurface. Formations are otherwise not defined by the thickness of their rock strata, which can vary widely. They are usually, but not universally, tabular in form. They may consist of a single lithology (rock type), or of alternating beds of two or more lithologies, or even a heterogeneous mixture of lithologies, so long as this distinguishes them from adjacent bodies of rock. The concept of a geologic formation goes back to the beginnings of modern scientific geology. The term was used by Abraham Gottlob Wer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hermosa N Of Rico
Hermosa (Spanish for "beautiful" or "gorgeous") may refer to: __NOTOC__ Places Philippines * Hermosa, Bataan United States * Hermosa Beach, California * Hermosa, Colorado * Hermosa Creek, a stream in Colorado * Hermosa Creek Wilderness, a wilderness area in Colorado * Hermosa, Chicago, Illinois * Hermosa, New Mexico * Hermosa, South Dakota Other uses * Hermosa (horse) Hermosa (foaled 6 May 2016) is an Irish Thoroughbred racehorse. She showed very good form as a juvenile in 2018 when she won two of her seven races including the Weld Park Stakes as well as finishing second in both the Fillies' Mile and the Cr ... (born 2016), winner of the 2019 1000 Guineas Stakes * ''Hermosa'' (slave ship), a schooner in the coastwise slave trade * ''Hermosa'' (spider), an Indonesian genus of spiders * Hermosa station, a former commuter rail station in Chicago {{disambiguation, geo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Molas Formation
The Molas Formation is a geologic formation that is found in the Four Corners region of the United States. Its age is poorly constrained but is thought to be Namurian (late Mississippian to middle Pennsylvanian). Description The Molas Formation is a sequence of continental red beds. It is divided into three members. The lowermost Coalbank Hill Member is up to of purplish-red to reddish-brown siltstone and conglomerate. This is overlain by an informal middle member, consisting of mudrock, sandstone, and conglomerate, that is typically around . The upper member is typically around that includes maroon to light gray sandstone. The upper member grades into the overlying Pinkerton Trail Formation. The Coalbank Hill Member may be a terra rossa (a residual soil formed by weathering of the underlying Leadville Limestone) and may correlate with the Log Springs Formation in the Jemez Mountains of New Mexico. It has also been interpreted as a loess trapped on the karst surface ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cutler Group
The Cutler Formation or Cutler Group is a rock unit that is exposed across the U.S. states of Arizona, northwest New Mexico, southeast Utah and southwest Colorado. It was laid down in the Early Permian during the Wolfcampian epoch. Description At its type area north of Ouray, Colorado, the Cutler Formation consists of over of bright red sandstone, siltstone, and conglomerate beds alternating with reddish mudstone or clay-rich limestone. Further west, the unit shows great lithological diversity, and can be divided into easily recognizable mappable subunits. Here the Cutler is raised from formation to group rank and its subunits are themselves designated as formations. The unit in its type area remains at formation rank and is often described as the "undifferentiated Cutler". The formation overlies the Hermosa Group and is in turn overlain by either the Dolores Formation (near its type area) or the Moenkopi Formation (further west). It is laterally equivalent to the A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paradox Formation
In geology, the Paradox Formation Is a Pennsylvanian age formation which consists of abundant evaporites with lesser interbedded shale, sandstone, and limestone. The evaporites are largely composed of gypsum, anhydrite, and halite. The formation is found mostly in the subsurface, but there are scattered exposures in anticlines in eastern Utah and western Colorado. These surface exposures occur in the Black Mesa, San Juan and Paradox Basins and the formation is found in the subsurface in southwestern Colorado, southeastern Utah, northeastern Arizona and northeastern New Mexico. The formation is notable both for its petroleum resources and for its salt tectonics, which are responsible for many distinctive geologic features of the eastern Colorado Plateau. In addition to the anticline valleys, these include the grabens of the Needles District of Canyonlands National Park and the fins and arches of Arches National Park. Description The Paradox Formation was deposited in the Para ... [...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] |
Honaker Trail Formation
The Honaker Trail Formation is a geologic formation in Utah. It preserves fossils dating back to the Carboniferous period. It is a member of the 3-member Hermosa Group and is located above the Paradox Formation in the dramatic site of Goosenecks State Park, Utah, notably Cataract Canyon. It is gray-colored above the multi-layered Paradox deep in Cataract Canyon, riverside. ---- Goosenecks panorama ---- See also * Honaker Trail * List of fossiliferous stratigraphic units in Utah * Paleontology in Utah The location of the state of Utah Paleontology in Utah refers to paleontological research occurring within or conducted by people from the U.S. state of Utah. Utah has a rich fossil record spanning almost all of the geologic column. During the ... References * Carboniferous geology of Utah Limestone formations of the United States {{Carboniferous-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
