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Coudersport Ice Mine
The Coudersport Ice Mine is an ice cave located in Sweden Township, Pennsylvania, Sweden Township, Pennsylvania, (east of Coudersport, Pennsylvania, Coudersport) that forms icicles in the spring and summer but not in the winter. Ice formations appear in the shaft during the spring of the year, continue through the hot weather, and disappear in winter. Ice appears in various shapes and forms, often as huge icicles measuring from 1 to in thickness, and from 15 to in length; the ice is generally clear and sparkling. A theory about the origin of this mine states that during the winter, cold air over the hilltop sinks into rock openings in the Lock Haven Formation (Devonian, Devonian age) and slowly expels the warm air that had penetrated these openings during the preceding summer. Ordinarily this process takes place locally, but here the interconnection of the rock crevices tends to be so arranged that the air circulation over a wide region is focused on one spot. Thus, from April or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PSM V82 D288 Inside The Ice Mine
PSM, an acronym, may refer to: Organizations * Sepaktakraw Association of Malaysia ( ms, Persatuan Sepaktakraw Malaysia; PSM), a national governing body in Malaysia. * Pakistan School Muscat, a Pakistani co-educational institute in Oman * Palestine Solidarity Movement, a student organization in the United States * Panhellenic Socialist Movement, a centre-left party in Greece * Parti Sosialis Malaysia, a socialist political party in Malaysia * PlayStation: The Official Magazine, a magazine originally known as PlayStation Magazine or PSM * Ponce School of Medicine, a post-graduate medical school located in Ponce, Puerto Rico * Power Systems Mfg, a subsidiary of Alstom, specializing in aftermarket gas turbine servicing for power generating industry. * ''Poznańska Spółdzielnia Mieszkaniowa'', a housing cooperative administering most of the Piątkowo, Poznań, Piątkowo district of Poznań, Poland * PSM3, a UK video game magazine specializing in Sony consoles * PSM Makassar, a footb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ice Cave
An ice cave is any type of natural cave (most commonly lava tubes or limestone caves) that contains significant amounts of perennial (year-round) ice. At least a portion of the cave must have a temperature below 0 °C (32 °F) all year round, and water must have traveled into the cave’s cold zone. Terminology This type of cave was first formally described by Englishman Edwin Swift Balch in 1900, who suggested the French term ''glacieres'' should be used for them, even though the term ''ice cave'' was then, as now, commonly used to refer to caves simply containing year-round ice. Among speleologists, ''ice cave'' is the proper English term. A cavity formed ''within'' ice (as in a glacier) is properly called a glacier cave. Types Ice caves occur as static ice caves, such as Durmitor Ice Cave, and dynamic or cyclical ice caves, such as Eisriesenwelt. Temperature mechanisms In most of the world, bedrock caves are thermally insulated from the surface and so common ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sweden Township, Pennsylvania
Sweden Township is a township in Potter County, Pennsylvania, United States. The population was 871 at the 2020 census. History Sweden Township was formed on February 26, 1828 from Eulalia Township. It was named for the nation of Sweden, the native country of its early pioneer settlers. Geography According to the United States Census Bureau, the township has a total area of 33.7 square miles (87.4 km), of which 33.7 square miles (87.3 km) is land and 0.03% is water. Sweden Township is bordered by Allegany Township to the north, Ulysses Township to the east, Summit Township to the south and Eulalia Township to the west. The Coudersport Ice Mine is located in Sweden Township. Demographics As of the census of 2000, there were 775 people, 299 households, and 232 families residing in the township. The population density was 23.0 people per square mile (8.9/km). There were 575 housing units at an average density of 17.1/sq mi (6.6/km). The ra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pennsylvania
Pennsylvania (; ( Pennsylvania Dutch: )), officially the Commonwealth of Pennsylvania, is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States. It borders Delaware to its southeast, Maryland to its south, West Virginia to its southwest, Ohio to its west, Lake Erie and the Canadian province of Ontario to its northwest, New York to its north, and the Delaware River and New Jersey to its east. Pennsylvania is the fifth-most populous state in the nation with over 13 million residents as of 2020. It is the 33rd-largest state by area and ranks ninth among all states in population density. The southeastern Delaware Valley metropolitan area comprises and surrounds Philadelphia, the state's largest and nation's sixth most populous city. Another 2.37 million reside in Greater Pittsburgh in the southwest, centered around Pittsburgh, the state's second-largest and Western Pennsylvania's largest city. The state's su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coudersport, Pennsylvania
Coudersport is a borough in and the county seat of Potter County, Pennsylvania. It is located approximately east by south of Erie on the Allegheny River. The population was 2,371 at the 2020 census. History The Coudersport and Port Allegany Railroad Station, Coudersport Historic District, and Potter County Courthouse are listed on the National Register of Historic Places. Geography Coudersport is located at (41.773903, -78.018559). According to the U.S. Census Bureau, the borough has a total area of , all land. Coudersport lies in a broad valley at the confluence of the Allegheny River and Mill Creek. It is surrounded by the great hilltop plateaux of the Allegheny highlands. Highways enter north and south on Pennsylvania Route 44, the very old Jersey Shore (log road) Turnpike, and from west to east on U.S. Route 6, the "Grand Army of the Republic Highway", which had been long a major mid-east-states east-west corridor before the construction of Interstate highways which began ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lock Haven Formation
The Lock Haven Formation is a Devonian mapped bedrock unit in Pennsylvania, in the Appalachian Mountains of the United States. Description The Lock Haven is gray to green-brown sandstone, siltstone, and shale and is over 400 million years old. It is located in northcentral Pennsylvania. Stratigraphy The Lock Haven may underlie various members of the Catskill Formation, although it may be a lateral equivalent of the Sherman Creek or Irish Valley Members of the Catskill. It is also a lateral equivalent of the Foreknobs Formation and underlying Scherr Formation. The Brallier Formation usually underlies the Lock Haven. The Minnehaha Springs Member (originally proposed as a member of the Scherr Formation) is a " clastic bundle" consisting of interbedded medium gray siltstone and olive gray shale with some grayish-red siltstone and shale and some sandstone. It is interpreted as turbidites. This member is proposed to define the base of the Lock Haven Formation. Notable Exposu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Devonian
The Devonian ( ) is a geologic period and system of the Paleozoic era, spanning 60.3 million years from the end of the Silurian, million years ago (Mya), to the beginning of the Carboniferous, Mya. It is named after Devon, England, where rocks from this period were first studied. The first significant adaptive radiation of life on dry land occurred during the Devonian. Free-sporing vascular plants began to spread across dry land, forming extensive forests which covered the continents. By the middle of the Devonian, several groups of plants had evolved leaves and true roots, and by the end of the period the first seed-bearing plants appeared. The arthropod groups of myriapods, arachnids and hexapods also became well-established early in this period, after starting their expansion to land at least from the Ordovician period. Fish reached substantial diversity during this time, leading the Devonian to often be dubbed the Age of Fishes. The placoderms began dominating ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PSM V82 D291 Seasonal Air Currents Explaining The Ice Phenomena
PSM, an acronym, may refer to: Organizations * Sepaktakraw Association of Malaysia ( ms, Persatuan Sepaktakraw Malaysia; PSM), a national governing body in Malaysia. * Pakistan School Muscat, a Pakistani co-educational institute in Oman * Palestine Solidarity Movement, a student organization in the United States * Panhellenic Socialist Movement, a centre-left party in Greece * Parti Sosialis Malaysia, a socialist political party in Malaysia * PlayStation: The Official Magazine, a magazine originally known as PlayStation Magazine or PSM * Ponce School of Medicine, a post-graduate medical school located in Ponce, Puerto Rico * Power Systems Mfg, a subsidiary of Alstom, specializing in aftermarket gas turbine servicing for power generating industry. * ''Poznańska Spółdzielnia Mieszkaniowa'', a housing cooperative administering most of the Piątkowo district of Poznań, Poland * PSM3, a UK video game magazine specializing in Sony consoles * PSM Makassar, a football club ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caves Of Pennsylvania
A cave or cavern is a natural void in the ground, specifically a space large enough for a human to enter. Caves often form by the weathering of rock and often extend deep underground. The word ''cave'' can refer to smaller openings such as sea caves, rock shelters, and grottos, that extend a relatively short distance into the rock and they are called ''exogene'' caves. Caves which extend further underground than the opening is wide are called ''endogene'' caves. Speleology is the science of exploration and study of all aspects of caves and the cave environment. Visiting or exploring caves for recreation may be called ''caving'', ''potholing'', or ''spelunking''. Formation types The formation and development of caves is known as ''speleogenesis''; it can occur over the course of millions of years. Caves can range widely in size, and are formed by various geological processes. These may involve a combination of chemical processes, erosion by water, tectonic forces, microorganism ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ice Caves
An ice cave is any type of natural cave (most commonly lava tubes or limestone caves) that contains significant amounts of perennial (year-round) ice. At least a portion of the cave must have a temperature below 0 °C (32 °F) all year round, and water must have traveled into the cave’s cold zone. Terminology This type of cave was first formally described by Englishman Edwin Swift Balch in 1900, who suggested the French term ''glacieres'' should be used for them, even though the term ''ice cave'' was then, as now, commonly used to refer to caves simply containing year-round ice. Among speleologists, ''ice cave'' is the proper English term. A cavity formed ''within'' ice (as in a glacier) is properly called a glacier cave. Types Ice caves occur as static ice caves, such as Durmitor Ice Cave, and dynamic or cyclical ice caves, such as Eisriesenwelt. Temperature mechanisms In most of the world, bedrock caves are thermally insulated from the surface and so common ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
