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Swabia Creek
Swabia Creek is a tributary of Little Lehigh Creek in Berks and Lehigh Counties in the eastern Pennsylvania region of the Lehigh Valley. Sources The primary (west) branch of Swabia Creek begins in the Bear Creek Mountain Resort, near Rittenhouse Gap in Longswamp Township, Berks County. Two other tributary streams, unnamed, also begin in Berks County. The east branch begins with numerous seeps and rivulets feeding into Hensingersville Dam in Lower Macungie Township. Two tributaries, Mountain Creek and an unnamed stream, begin in Upper Milford Township. All streams begin on the South Mountain ridge, although surface and ground waters enter from Lock Ridge. Course Swabian valleys A tributary of the west branch flows past the village of Red Lion and joins the primary branch and another tributary in the village of Maple Grove. The west branch of Swabia Creek then runs along the Lock Ridge south face. The east branch passes through Hensingersville Dam. The east and we ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 territories, nine Minor Outlying Islands, and 326 Indian reservations. The United States is also in free association with three Pacific Island sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Republic of Palau. It is the world's third-largest country by both land and total area. It shares land borders with Canada to its north and with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 million, it is the most populous country in the Americas and the third most populous in the world. The national capital of the United States is Washington, D.C. and its most populous city and principal financial center is New York City. Paleo-Americ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maple Grove, Berks County, Pennsylvania
Maple Grove is an unincorporated community in Longswamp Township in Berks County, Pennsylvania Berks County ( Pennsylvania German: ''Barricks Kaundi'') is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 428,849. The county seat is Reading. The Schuylkill River, a tributary of the Delaware Ri ..., United States. Maple Grove is located near the intersection of State Street and Mountain Road. References {{authority control Unincorporated communities in Berks County, Pennsylvania Unincorporated communities in Pennsylvania ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hardyston Quartzite
The Cambrian Hardyston Formation or Hardyston Quartzite is a mapped bedrock unit in Pennsylvania and New Jersey. It was originally described by Wolff and Brooks in 1898,Wolff, J.E., and Brooks, A.H., 1898, The age of the Franklin white limestone of Sussex County, New Jersey, IN Charles Doolittle Walcott, Walcott, C.D., Eighteenth annual report of the United States Geological Survey to the Secretary of the Interior, 1896–1897; Part II, Papers chiefly of a theoretical nature: U.S. Geological Survey Annual Report, 18, pt. 2, p. 425-457. where two outcrops in Hardyston Township, New Jersey, Hardyston Township, Sussex County, New Jersey, were described. They originally named it the Hardistonville quartzite, but the name was later changed by and Weller in 1901 to Hardiston quartzite,Kummel, H.B., and Weller, Stuart, 1901, Paleozoic limestones of the Kittatinny Valley, New Jersey: Geological Society of America Bulletin, v. 12, p. 147-164. and changed again by the same authors a year ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hornblende
Hornblende is a complex inosilicate series of minerals. It is not a recognized mineral in its own right, but the name is used as a general or field term, to refer to a dark amphibole. Hornblende minerals are common in igneous and metamorphic rocks. The general formula is . Physical properties Hornblende has a hardness of 5–6, a specific gravity of 3.0 to 3.6, and is typically an opaque green, dark green, brown, or black color. It tends to form slender prismatic to bladed crystals, diamond-shaped in cross-section, or is present as irregular grains or fibrous masses. Its planes of cleavage intersect at 56° and 124° angles. Hornblende is most often confused with the pyroxene series and biotite mica, which are also dark minerals found in granite and charnockite. Pyroxenes differ in their cleavage planes, which intersect at 87° and 93°. Hornblende is an inosilicate (chain silicate) mineral, built around double chains of silica tetrahedra. These chains extend the length of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gneiss
Gneiss ( ) is a common and widely distributed type of metamorphic rock. It is formed by high-temperature and high-pressure metamorphic processes acting on formations composed of igneous or sedimentary rocks. Gneiss forms at higher temperatures and pressures than schist. Gneiss nearly always shows a banded texture characterized by alternating darker and lighter colored bands and without a distinct cleavage. Gneisses are common in the ancient crust of continental shields. Some of the oldest rocks on Earth are gneisses, such as the Acasta Gneiss. Description Orthogneiss from the Czech Republic In traditional English and North American usage, a gneiss is a coarse-grained metamorphic rock showing compositional banding (gneissic banding) but poorly developed schistosity and indistinct cleavage. In other words, it is a metamorphic rock composed of mineral grains easily seen with the unaided eye, which form obvious compositional layers, but which has only a weak tendency to fracture ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Basement (geology)
In geology, basement and crystalline basement are crystalline rocks lying above the mantle and beneath all other rocks and sediments. They are sometimes exposed at the surface, but often they are buried under miles of rock and sediment. The basement rocks lie below a sedimentation, sedimentary platform (geology), platform or cover, or more generally any rock below sedimentary rocks or sedimentary basins that are metamorphic rock, metamorphic or Igneous rock, igneous in origin. In the same way, the sediments or sedimentary rocks on top of the basement can be called a "cover" or "sedimentary cover". Crustal rocks are modified several times before they become basement, and these transitions alter their composition. Continental crust Basement rock is the thick foundation of ancient, and oldest, metamorphic and igneous rock that forms the Crust (geology), crust of continents, often in the form of granite. Basement rock is contrasted to overlying sedimentary rocks which are laid down ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metamorphic Rock
Metamorphic rocks arise from the transformation of existing rock to new types of rock in a process called metamorphism. The original rock (protolith) is subjected to temperatures greater than and, often, elevated pressure of or more, causing profound physical or chemical changes. During this process, the rock remains mostly in the solid state, but gradually recrystallizes to a new texture or mineral composition. The protolith may be an igneous, sedimentary, or existing metamorphic rock. Metamorphic rocks make up a large part of the Earth's crust and form 12% of the Earth's land surface. They are classified by their protolith, their chemical and mineral makeup, and their texture. They may be formed simply by being deeply buried beneath the Earth's surface, where they are subject to high temperatures and the great pressure of the rock layers above. They can also form from tectonic processes such as continental collisions, which cause horizontal pressure, friction, and distorti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pre-Cambrian
The Precambrian (or Pre-Cambrian, sometimes abbreviated pꞒ, or Cryptozoic) is the earliest part of Earth's history, set before the current Phanerozoic Eon. The Precambrian is so named because it preceded the Cambrian, the first period of the Phanerozoic Eon, which is named after Cambria, the Latinised name for Wales, where rocks from this age were first studied. The Precambrian accounts for 88% of the Earth's geologic time. The Precambrian is an informal unit of geologic time, subdivided into three eons (Hadean, Archean, Proterozoic) of the geologic time scale. It spans from the formation of Earth about 4.6 billion years ago ( Ga) to the beginning of the Cambrian Period, about million years ago ( Ma), when hard-shelled creatures first appeared in abundance. Overview Relatively little is known about the Precambrian, despite it making up roughly seven-eighths of the Earth's history, and what is known has largely been discovered from the 1960s onwards. The Precambrian fossil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lehigh Line (Conrail)
The Conrail Lehigh Line is a railroad line in New Jersey that is part of Conrail Shared Assets Operations under the North Jersey Shared Assets Area division. The line runs from CP Port Reading Junction in Manville to Oak Island Yard in Newark. The line is double-track and signaled through its entire length. The line began operations in 1999 using former existing tracks from Manville to Newark that was once part of the original Lehigh Line which is still in existence and is owned and operated by Norfolk Southern Railway. The original Lehigh Line was built by the Lehigh Valley Railroad and opened in 1855 in the Lehigh Valley. The line later expanded all the way to Buffalo, New York and then to Jersey City which was later retracted to Newark. The original Lehigh Line and the rest of the Lehigh Valley Railroad was merged into Conrail in 1976 and was downsized in the New York and Pennsylvania. The original Lehigh Line was inherited by Norfolk Southern Railway in 1999 but it did no ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lehigh Street
Lehigh Street is a major road that connects Emmaus, Pennsylvania in the west to Allentown, Pennsylvania in the east in the Lehigh Valley region of Pennsylvania. The road is one of six roads that enter and depart Allentown, the third largest city in eastern Pennsylvania. Lehigh Street is one of several major Allentown-area exits off Interstate 78, which runs from Interstate 81 in Lebanon County in the west to the Holland Tunnel and New York City in the east. Lehigh Street also serves as a major commercial center for the Lehigh Valley. "Auto Mile", which includes approximately a dozen new and used automobile dealerships, is located on its western border with Emmaus. As the road enters Allentown from the west, it also runs by Queen City Airport, an Allentown airport used mostly by small, privately owned aircraft. South Mall, an enclosed shopping mall in Salisbury Township, is located on Lehigh Street. The Emmaus side of Lehigh Street is the location of Shangy's, a beer distributor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mack Trucks
Mack Trucks, Inc., is an American truck manufacturing company and a former manufacturer of buses and trolley buses. Founded in 1900 as the Mack Brothers Company, it manufactured its first truck in 1905 and adopted its present name in 1922. Mack Trucks is a subsidiary of AB Volvo, which purchased Mack along with its then parent company Renault Véhicules Industriels in 2000. Founded originally in Brooklyn, New York in 1900, the company's headquarters were moved to Allentown, Pennsylvania in 1905 where they remained until 2009. In 2009, its headquarters were relocated to Greensboro, North Carolina. Mack products are produced in Lower Macungie, Pennsylvania, and Salem, Virginia, with all powertrain products produced in its Hagerstown, Maryland plant. Mack also maintains additional assembly plants in Pennsylvania, Australia, and Venezuela. The company also once maintained plants in Hayward, California and Oakville, Ontario, though both of these have been closed. Operations The com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allen Organ Company
The Allen Organ Company builds church organs, home organs, and theatre organs. Its factory is located in Macungie, Pennsylvania. The Allen International Sales Headquarters also includes the Jerome Markowitz Memorial Center, a museum. It displays many instruments that represent technological milestones in the development of the pipeless, electronicorgan. Customers of the Allen Organ Company can choose from an array of sounds. Because of hard chips and computer programming, organs can be programmed to the customer’s taste. If sounds aren’t to a customer’s satisfaction, the organ can be re-tuned or reprogrammed at home by a company representative. Many churches are switching over to computer processed organs, made or inspired by the Allen Organ Company’s models, as opposed to the traditional pipe organs. History Allen Organ Company was founded in 1937 and named after its birthplace, Allentown, Pennsylvania. The company was incorporated in 1945, after interruption by Wor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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