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The Lookout (Springfield Township)
{{Infobox mountain , name = The Lookout , other_name = , etymology = , native_name = , native_name_lang = , photo = , photo_size = , photo_alt = , photo_caption = , map = USA Pennsylvania , map_image = , map_alt = , map_caption = Location of The Lookout , map_relief = , map_size = 250 , location = Springfield Township, Bucks County, Pennsylvania , label = , label_position = , elevation = , elevation_m = , elevation_ft = 906 , elevation_ref = National Elevation Dataset , prominence = Flint Hill , prominence_m = , prominence_ft = 179 , prominence_ref = , isolation = , isolation_km = , isolation_mi = 0.9 , isolation_ref = Kohlberg , parent_peak = Flint Hill , listing = , translation = , language ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Springfield Township, Bucks County, Pennsylvania
Springfield Township is a township in Bucks County, Pennsylvania. The population was 5,035 at the 2010 census. History The Jacob Funk House and Barn, John Eakin Farm, Knecht's Mill Covered Bridge, Springhouse Farm, and Springtown Historic District are listed on the National Register of Historic Places. It was also the location of the formerly listedU.S. Census Bureau, the township has a total area of 30.8 square miles (79.7 km2), all land. It is located in the Delaware watershed and, while most of the township is drained directly eastward into the Delaware River by Tohickon Creek and Cooks Creek (both of which start in Springfield,) a very small area in the extreme west is drained by the Unami Creek into the Perkiomen Creek and Schuylkill River. Springfield Township's past and present villages include Bursonville, Gallows, Gruversville, Hilltop, Passer, Pleasant Valley, Bucks County, Pennsylvania, Pleasant Valley, Pullen, Springtown, Stony Point, and Zionhill ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quakertown, Pennsylvania
Quakertown is a borough in Bucks County, Pennsylvania, United States. As of 2020, it had a population of 9,359. The borough is south of Allentown and Bethlehem and north of Philadelphia, making Quakertown a border town of both the Delaware Valley and Lehigh Valley metropolitan areas. Quakertown is considered part of the United States Census Bureau's Philadelphia− Camden− Wilmington (PA−NJ−DE-MD) MSA and the Delaware Valley. Quakertown is surrounded by Richland Township. Quakertown is located south of Allentown and northwest of Philadelphia. History Quaker settlement Quakertown was originally settled by members of the Religious Society of Friends, or Quakers. The settlement was not officially known as Quakertown until its first post office opened in 1803. Liberty Bell moved On September 18, 1777, during the American Revolutionary War, a convoy of wagons carrying the Liberty Bell from Philadelphia to Allentown, under the command of Col. Thomas Polk of Charlot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Augite
Augite is a common rock-forming pyroxene mineral with formula . The crystals are monoclinic and prismatic. Augite has two prominent cleavages, meeting at angles near 90 degrees. Characteristics Augite is a solid solution in the pyroxene group. Diopside and hedenbergite are important endmembers in augite, but augite can also contain significant aluminium, titanium, and sodium and other elements. The calcium content of augite is limited by a miscibility gap between it and pigeonite and orthopyroxene: when occurring with either of these other pyroxenes, the calcium content of augite is a function of temperature and pressure, but mostly of temperature, and so can be useful in reconstructing temperature histories of rocks. With declining temperature, augite may exsolve lamellae of pigeonite and/or orthopyroxene. There is also a miscibility gap between augite and omphacite, but this gap occurs at higher temperatures. There are no industrial or economic uses for this mineral. Locatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Labradorite
Labradorite (( Ca, Na)( Al, Si)4 O8) is a calcium-enriched feldspar mineral first identified in Labrador, Canada, which can display an iridescent effect ( schiller). Labradorite is an intermediate to calcic member of the plagioclase series. It has an anorthite percentage (%An) of between 50 and 70. The specific gravity ranges from 2.68 to 2.72. The streak is white, like most silicates. The refractive index ranges from 1.559 to 1.573 and twinning is common. As with all plagioclase members, the crystal system is triclinic, and three directions of cleavage are present, two of which are nearly at right angles and are more obvious, being of good to perfect quality (while the third direction is poor). It occurs as clear, white to gray, blocky to lath shaped grains in common mafic igneous rocks such as basalt and gabbro, as well as in anorthosites. Occurrence The geological type area for labradorite is Paul's Island near the town of Nain in Labrador, Canada. It has also been r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Africa
South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa. It is bounded to the south by of coastline that stretch along the South Atlantic and Indian Oceans; to the north by the neighbouring countries of Namibia, Botswana, and Zimbabwe; and to the east and northeast by Mozambique and Eswatini. It also completely enclaves the country Lesotho. It is the southernmost country on the mainland of the Old World, and the second-most populous country located entirely south of the equator, after Tanzania. South Africa is a biodiversity hotspot, with unique biomes, plant and animal life. With over 60 million people, the country is the world's 24th-most populous nation and covers an area of . South Africa has three capital cities, with the executive, judicial and legislative branches of government based in Pretoria, Bloemfontein, and Cape Town respectively. The largest city is Johannesburg. About 80% of the population are Black South Afri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Montgomery County, Pennsylvania
Montgomery County is a county in the Commonwealth of Pennsylvania. It is the third-most populous county in Pennsylvania and the 73rd-most populous county in the United States. As of the 2020 census, the population of the county was 856,553, representing a 7.1% increase from the 799,884 residents enumerated in the 2010 census. Montgomery County is located adjacent to and northwest of Philadelphia. The county seat and largest city is Norristown. Montgomery County is geographically diverse, ranging from farms and open land in the extreme north of the county to densely populated suburban neighborhoods in the southern and central portions of the county. Montgomery County is included in the Philadelphia- Camden- Wilmington PA- NJ- DE- MD metropolitan statistical area, sometimes expansively known as the Delaware Valley. The county marks part of the Delaware Valley's northern border with the Lehigh Valley region of Pennsylvania. In 2010, Montgomery County was the 66th-wealthiest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red Hill, Pennsylvania
Red Hill is a borough in Montgomery County, Pennsylvania, United States. It is primarily a lakeshore, lowlands, suburban community northwest of Philadelphia in the Delaware River Valley watershed, as is the balance of its county. Its population was 2,383 at the 2010 census. Red Hill is served by the Upper Perkiomen School District. It is also part of the strip of small towns that run together along Route 29, Red Hill, Pennsburg, and East Greenville, colloquially known as Red Pennsville. The town is named after the large amounts of red shale in the soil and ground layers of the hill. History The Red Hill Historic District was added to the National Register of Historic Places in 1985. Geography Red Hill is located at (40.376288, -75.484308). According to the U.S. Census Bureau, the borough has a total area of , all land. Demographics As of the 2010 census, the borough was 96.4% White, 1.4% Black or African American, 0.7% Asian, and 1.3% were two or more races. Abo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
East Greenville, Pennsylvania
East Greenville is a borough in Montgomery County, Pennsylvania. The population was 2,951 at the 2010 census. It is one of a strip of small towns that run together along Route 29, including Red Hill, Pennsburg and East Greenville. The borough is part of the Upper Perkiomen School District. History In 1950, Hans and Florence Knoll moved the headquarters of their company Knoll (known for its modern furniture pieces by architects and designers such as Mies van der Rohe, Eero Saarinen, and Harry Bertoia) to the town, where it remains today. In 2011, the Knoll factory employed about 700 people. Geography East Greenville is located at (40.405626, −75.504144). According to the U.S. Census Bureau, the borough has a total area of , all land. Demographics As of the 2010 census, the borough was 93.7% White, 2.3% Black or African American, 0.1% Native American, 1.0% Asian, and 1.9% were two or more races. 3.3% of the population were of Hispanic or Latino ancestry. As of the cens ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pennsburg, Pennsylvania
Pennsburg is a Borough (Pennsylvania), borough in Montgomery County, Pennsylvania. Its population was 3,889 at the 2020 census. It is part of the Upper Perkiomen School District. It is also part of the strip of small towns that run together along Pennsylvania Route 29, Route 29: Red Hill, Pennsylvania, Red Hill, Pennsburg, and East Greenville, Pennsylvania, East Greenville. The towns are collectively referred to as Upper Perk. Geography Pennsburg is located at (40.395595, −75.497361). According to the United States Census Bureau, U.S. Census Bureau, the borough has a total area of , all land. Pennsburg is located northwest of Philadelphia and southwest of Quakertown, Pennsylvania, Quakertown. Pennsburg's elevation is at above sea level. A nature preserve is along Macoby Creek. The borough has a hot-summer, humid continental climate (''Dfa'') and average monthly temperatures range from 29.9°F in January to 74.6°F in July. The United States Department of Agriculture, USDA ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triassic
The Triassic ( ) is a geologic period and system which spans 50.6 million years from the end of the Permian Period 251.902 million years ago ( Mya), to the beginning of the Jurassic Period 201.36 Mya. The Triassic is the first and shortest period of the Mesozoic Era. Both the start and end of the period are marked by major extinction events. The Triassic Period is subdivided into three epochs: Early Triassic, Middle Triassic and Late Triassic. The Triassic began in the wake of the Permian–Triassic extinction event, which left the Earth's biosphere impoverished; it was well into the middle of the Triassic before life recovered its former diversity. Three categories of organisms can be distinguished in the Triassic record: survivors from the extinction event, new groups that flourished briefly, and other new groups that went on to dominate the Mesozoic Era. Reptiles, especially archosaurs, were the chief terrestrial vertebrates during this time. A specialized subgroup of archo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diabase
Diabase (), also called dolerite () or microgabbro, is a mafic, holocrystalline, subvolcanic rock equivalent to volcanic basalt or plutonic gabbro. Diabase dikes and sills are typically shallow intrusive bodies and often exhibit fine-grained to aphanitic chilled margins which may contain tachylite (dark mafic glass). ''Diabase'' is the preferred name in North America, while ''dolerite'' is the preferred name in the rest of the English-speaking world, where sometimes the name ''diabase'' refers to altered dolerites and basalts. Some geologists prefer to avoid confusion by using the name ''microgabbro''. The name ''diabase'' comes from the French ', and ultimately from the Greek - meaning "act of crossing over, transition". Petrography Diabase normally has a fine but visible texture of euhedral lath-shaped plagioclase crystals (62%) set in a finer matrix of clinopyroxene, typically augite (20–29%), with minor olivine (3% up to 12% in olivine diabase), magnetite (2%), an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diabase
Diabase (), also called dolerite () or microgabbro, is a mafic, holocrystalline, subvolcanic rock equivalent to volcanic basalt or plutonic gabbro. Diabase dikes and sills are typically shallow intrusive bodies and often exhibit fine-grained to aphanitic chilled margins which may contain tachylite (dark mafic glass). ''Diabase'' is the preferred name in North America, while ''dolerite'' is the preferred name in the rest of the English-speaking world, where sometimes the name ''diabase'' refers to altered dolerites and basalts. Some geologists prefer to avoid confusion by using the name ''microgabbro''. The name ''diabase'' comes from the French ', and ultimately from the Greek - meaning "act of crossing over, transition". Petrography Diabase normally has a fine but visible texture of euhedral lath-shaped plagioclase crystals (62%) set in a finer matrix of clinopyroxene, typically augite (20–29%), with minor olivine (3% up to 12% in olivine diabase), magnetite (2%), an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
