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Helictite At Treak Cavern (close Up)
A helictite is a speleothem (cave-formed mineral) found in a limestone cave that changes its axis from the vertical at one or more stages during its growth. Helictites have a curving or angular form that looks as if they were grown in zero gravity. They are most likely the result of capillary forces acting on tiny water droplets, a force often strong enough at this scale to defy gravity. Helictites are, perhaps, the most delicate of cave formations. They are usually made of needle-form calcite and aragonite. Helictite forms have been described in several types: ribbon helictites, saws, rods, butterflies, "hands", curly-fries, and "clumps of worms". They typically have radial symmetry. They can be easily crushed or broken by the slightest touch. Because of this, helictites are rarely seen within arm's reach in tourist caves. Timpanogos Cave National Monument in Utah has one of the largest collections of these formations in the world. Large numbers are also in the Jenolan Caves ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Timpanogos Cave National Monument
Timpanogos Cave National Monument is a United States National Monument protecting the Timpanogos Cave Historic District and a cave system on Mount Timpanogos in American Fork Canyon in the Wasatch Range, near Highland, Utah, in the United States. The site is managed by the National Park Service. The trail to the cave is steep, gaining close to , but paved and fairly wide, making the caves accessible to most. The three caves of the system, one of which is specifically called Timpanogos Cave, are only viewable on guided tours when the monument is open, usually from May through September depending on snow conditions and funding. There is the standard tour going through the cave system, and an Introduction to Caving tour which teaches Leave No Trace caving and goes further into Hansen Cave. Three caves The three caves of the Monument that are tourable are: Hansen Cave, Middle Cave, and Timpanogos Cave. The three caves are connected by manmade tunnels blasted in the 1930s by the Wo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wyandotte Cave8
Wyandotte may refer to: People and culture * Wyandotte Nation (also Wyandot), a federally recognized Native American tribe in Oklahoma * Wyandot language, the extinct language, now under revitalization efforts, of the Wyandotte Nation United States geographic names * Wyandotte, Arkansas, an historical community in Hot Spring County, Arkansas * Wyandotte, California * Wyandotte, Indiana * Wyandotte, Kansas, a mid-19th-century settlement and neighborhood of Kansas City, Kansas; see Kansas Pacific Railway * Wyandotte, Louisville, Kentucky, a neighborhood * Wyandotte, Michigan * Wyandotte, Oklahoma * Wyandotte Caves, park and its caverns in southern Indiana * Wyandotte County, Kansas * Wyandotte Township, Pennington County, Minnesota Other * ''Wyandotté'' (novel), by James Fenimore Cooper * Wyandotte chicken, a breed See also * Huron (other) * Huron-Wendat (other) * Wendat (other) ''Wendat'' is an alternate spelling of ''Wyandot'' and ''Wyand ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helictites At Jenolan Caves
A helictite is a speleothem (cave-formed mineral) found in a limestone cave that changes its axis from the vertical at one or more stages during its growth. Helictites have a curving or angular form that looks as if they were grown in zero gravity. They are most likely the result of capillary forces acting on tiny water droplets, a force often strong enough at this scale to defy gravity. Helictites are, perhaps, the most delicate of cave formations. They are usually made of needle-form calcite and aragonite. Helictite forms have been described in several types: ribbon helictites, saws, rods, butterflies, "hands", curly-fries, and "clumps of worms". They typically have radial symmetry. They can be easily crushed or broken by the slightest touch. Because of this, helictites are rarely seen within arm's reach in tourist caves. Timpanogos Cave National Monument in Utah has one of the largest collections of these formations in the world. Large numbers are also in the Jenolan Caves ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stalactite
A stalactite (, ; from the Greek 'stalaktos' ('dripping') via ''stalassein'' ('to drip') is a mineral formation that hangs from the ceiling of caves, hot springs, or man-made structures such as bridges and mines. Any material that is soluble and that can be deposited as a colloid, or is in suspension, or is capable of being melted, may form a stalactite. Stalactites may be composed of lava, minerals, mud, peat, pitch, sand, sinter, and amberat (crystallized urine of pack rats). A stalactite is not necessarily a speleothem, though speleothems are the most common form of stalactite because of the abundance of limestone caves. The corresponding formation on the floor of the cave is known as a stalagmite. Mnemonics have been developed for which word refers to which type of formation; one is that ''stalactite'' has a C for "ceiling", and ''stalagmite'' has a G for "ground". Another example is that ''stalactites'' "hang on ''T''ight" and ''stalagmites'' "''M''ight grow up" †... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karrantza
Karrantza Harana/Valle de Carranza (in Basque ''Karrantza Harana'', in Spanish ''Valle de Carranza''), is a town and municipality located in the province of Biscay, in the Basque Country. It is located in the comarca of Enkarterri and it is the westernmost and largest (by area) municipality of the province. Film director VĂctor Erice was born there. Etymology The first recorded appearance of the toponym of Carranza is on the Chronicle of Alfonso III, dated in the 10th Century, where it appears as ''Carrantia''. According to the text, ''Carrantia'' was one of the towns known to be populated during the reign of Alfonso I, King of Asturias. The origin of ''Carrantia'' comes from the Cantabrian dialect, meaning "high rocks". From ''Carrantia'' it would evolve to Carranza, the current Spanish toponym. ''Karrantza'' is the Basque toponym, an adaptation of Carranza following the Basque orthographic rules, and it is the official name of the municipality since 2001. History The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jenolan Caves
The Jenolan Caves (Tharawal language, Tharawal: ''Binoomea'', ''Bindo'', ''Binda'') are limestone cave, limestone caves located within the Jenolan Karst Conservation Reserve in the Central Tablelands region, west of the Blue Mountains (New South Wales), Blue Mountains, in Jenolan, New South Wales, Jenolan, Oberon Council, New South Wales, in eastern Australia. The caves and reserve are situated approximately west of Sydney, east of and west of Katoomba, New South Wales, Katoomba ( by road). The caves are the most visited of several similar groups in the limestone caves of the country, and the most ancient discovered open caves in the world. They include numerous Silurian marine fossils and the calcite formations, sometimes pure white, are noted for their beauty. The cave network follows the watercourse, course of a Subterranea (geography), subterranean section of the Jenolan River. It has more than of multi-level passages and over 300 entrances. The complex is still being e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tourism
Tourism is travel for pleasure or business; also the theory and practice of touring (other), touring, the business of attracting, accommodating, and entertaining tourists, and the business of operating tour (other), tours. The World Tourism Organization defines tourism more generally, in terms which go "beyond the common perception of tourism as being limited to holiday activity only", as people "travelling to and staying in places outside their usual environment for not more than one consecutive year for leisure and not less than 24 hours, business and other purposes". Tourism can be Domestic tourism, domestic (within the traveller's own country) or International tourism, international, and international tourism has both incoming and outgoing implications on a country's balance of payments. Tourism numbers declined as a result of a strong economic slowdown (the late-2000s recession) between the second half of 2008 and the end of 2009, and in consequence of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helictite At Treak Cavern (close Up)
A helictite is a speleothem (cave-formed mineral) found in a limestone cave that changes its axis from the vertical at one or more stages during its growth. Helictites have a curving or angular form that looks as if they were grown in zero gravity. They are most likely the result of capillary forces acting on tiny water droplets, a force often strong enough at this scale to defy gravity. Helictites are, perhaps, the most delicate of cave formations. They are usually made of needle-form calcite and aragonite. Helictite forms have been described in several types: ribbon helictites, saws, rods, butterflies, "hands", curly-fries, and "clumps of worms". They typically have radial symmetry. They can be easily crushed or broken by the slightest touch. Because of this, helictites are rarely seen within arm's reach in tourist caves. Timpanogos Cave National Monument in Utah has one of the largest collections of these formations in the world. Large numbers are also in the Jenolan Caves ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Symmetry (biology)
Symmetry in biology refers to the symmetry observed in organisms, including plants, animals, fungi, and bacteria. External symmetry can be easily seen by just looking at an organism. For example, take the face of a human being which has a plane of symmetry down its centre, or a pine cone with a clear symmetrical spiral pattern. Internal features can also show symmetry, for example the tubes in the human body (responsible for transporting gases, nutrients, and waste products) which are cylindrical and have several planes of symmetry. Biological symmetry can be thought of as a balanced distribution of duplicate body parts or shapes within the body of an organism. Importantly, unlike in mathematics, symmetry in biology is always approximate. For example, plant leaves – while considered symmetrical – rarely match up exactly when folded in half. Symmetry is one class of patterns in nature whereby there is near-repetition of the pattern element, either by reflection or rotation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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