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Crystal Cave, Bermuda
Crystal Cave is a cave in the British overseas territory of Bermuda. It is located in Hamilton Parish, close to Castle Harbour. The cave is approximately 500 m long, and 62 m deep. The lower 19–20 m of the cave are below water level. The cave formed at a time when the sea level was lower; as the sea level rose, many cave formations which formed above water became submerged. A tourist attraction since 1907, it was discovered in 1905 by Carl Gibbons and Edgar Hollis, two 12-year-old boys searching for a lost cricket ball. Soon after, the Wilkinson family (the owners of the property since 1884) learned of the discovery. Mr. Percy Wilkinson lowered his 14-year-old son Bernard into it with a bicycle lamp on 140 feet of strong rope tied to a tree to explore the cave. The area surrounding Harrington Sound (which lies to the south of Crystal Cave) is of limestone formation and is noted for its many subterranean waterways, through which the waters of the sound empty into the Atlantic Oce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Overseas Territories
The British Overseas Territories (BOTs), also known as the United Kingdom Overseas Territories (UKOTs), are fourteen dependent territory, territories with a constitutional and historical link with the United Kingdom. They are the last remnants of the former British Empire and do not form part of the United Kingdom itself. The permanently inhabited territories are internally Self-governance, self-governing, with the United Kingdom retaining responsibility for Defence (military), defence and foreign relations. Three of the territories are inhabited only by a transitory population of military or scientific personnel. All but one of the rest are listed by the Special Committee on Decolonization, UN Special Committee on Decolonization as United Nations list of non-self-governing territories, non-self-governing territories. All fourteen have the Monarchy of the United Kingdom, British monarch as head of state. three territories (the Falkland Islands, Gibraltar and the Akrotiri an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bermuda
) , anthem = "God Save the King" , song_type = National song , song = " Hail to Bermuda" , image_map = , map_caption = , image_map2 = , mapsize2 = , map_caption2 = , subdivision_type = Sovereign state , subdivision_name = , established_title2 = English settlement , established_date2 = 1609 (officially becoming part of the Colony of Virginia in 1612) , official_languages = English , demonym = Bermudian , capital = Hamilton , coordinates = , largest_city = Hamilton , ethnic_groups = , ethnic_groups_year = 2016 , government_type = Parliamentary dependency under a constitutional monarchy , leader_title1 = Monarch , leader_name1 = Charles III , leader_title2 = Governor , leader_name2 = Rena Lalgie , leader_title3 = Premier , leader_name3 = Edward David Burt , legislature = Parliament , upper_house = Senate , lower_house = House of Assembly , area_km2 = 53.2 , area_sq_mi = 20.54 , area_rank = , percent_water = 27 , elevation_max_m = 79 , ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hamilton Parish, Bermuda
Hamilton Parish (originally Bedford Parish) is one of the nine parishes of Bermuda. It was renamed for Scottish aristocrat James Hamilton, 2nd Marquess of Hamilton (1589-1625) when he purchased the shares originally held in the Virginia Company by Lucy Russell, Countess of Bedford. It is located in the northwest of the island chain, and is split in two by the large Harrington Sound, occupying all but the south and northeastern tip of its coast. The islands within the sound also form part of the parish. It is joined to Smith's Parish in the south, and St. George's Parish in the northeast. As with most of Bermuda's parishes, it covers just over 2.3 square miles (about 6.0 km² or 1500 acres). It had a population of 5,584 in 2016. Natural features in Hamilton include Flatt's Inlet, Trunk Island, Shelly Bay, Bailey's Bay, Mangrove Lake, Trott's Pond, Crystal Cave, Castle Harbor, and The Causeway, which links Hamilton with St. George's Parish. Notable locations in Hamil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Castle Harbour, Bermuda
Castle Harbour is a large natural harbour in Bermuda. It is located between the northeastern end of the main island and St. David's Island. Originally called ''Southampton Port'', it was renamed as a result of its heavy fortification in the early decades of the Seventeenth century. Geography Castle Harbour is surrounded by St. George's Parish to the north, east, and south, as well as Hamilton Parish to the west. A chain of islands and rocks stretches across the main opening to the Atlantic Ocean, in the east, notably Cooper's Island (which was made a landmass contiguous to St. David's Island and Longbird Island in the 1940s), and Nonsuch Island. The only channel suitable for large vessels to enter the harbour from the open Atlantic is Castle Roads, which was historically guarded by a number of fortifications, on Castle Island, Southampton Island, and Charles Island. Forts were also placed nearby on other small islands, and on the Tucker's Town peninsula of the Main Island. I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Level
Mean sea level (MSL, often shortened to sea level) is an average surface level of one or more among Earth's coastal bodies of water from which heights such as elevation may be measured. The global MSL is a type of vertical datuma standardised geodetic datumthat is used, for example, as a chart datum in cartography and marine navigation, or, in aviation, as the standard sea level at which atmospheric pressure is measured to calibrate altitude and, consequently, aircraft flight levels. A common and relatively straightforward mean sea-level standard is instead the midpoint between a mean low and mean high tide at a particular location. Sea levels can be affected by many factors and are known to have varied greatly over geological time scales. Current sea level rise is mainly caused by human-induced climate change. When temperatures rise, Glacier, mountain glaciers and the Ice sheet, polar ice caps melt, increasing the amount of water in water bodies. Because most of human settlem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Speleothem
A speleothem (; ) is a geological formation by mineral deposits that accumulate over time in natural caves. Speleothems most commonly form in calcareous caves due to carbonate dissolution reactions. They can take a variety of forms, depending on their depositional history and environment. Their chemical composition, gradual growth, and preservation in caves make them useful paleoclimatic proxies. Chemical and physical characteristics More than 300 variations of cave mineral deposits have been identified. The vast majority of speleothems are calcareous, composed of calcium carbonate (CaCO3) minerals (calcite or aragonite). Less commonly, speleothems are made of calcium sulfate (gypsum or mirabilite) or opal. Speleothems of pure calcium carbonate or calcium sulfate are translucent and colorless. The presence of iron oxide or copper provides a reddish brown color. The presence of manganese oxide can create darker colors such as black or dark brown. Speleothems can also be brown d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harrington Sound, Bermuda
Harrington Sound is a large inland body of water in the northeast of the main island of Bermuda. It is surrounded by the main island on all sides, only appearing open to the ocean via a small channel called Flatt's Inlet in the southwest. Much of the sound's water flows to and from the ocean via cavern systems, notably Crystal Cave and Leamington Cave. Harrington Sound is surrounded by the parishes of Smith's, Hamilton, and St. George's. It is well known for fishing, swimming, sailing and kayaking. The sound was named for Lucy Harington, Countess of Bedford. She was an ''adventurer'' (shareholder) in the Somers Isles Company The Somers Isles Company (fully, the Company of the City of London for the Plantacion of The Somers Isles or the Company of The Somers Isles) was formed in 1615 to operate the English colony of the Somers Isles, also known as Bermuda, as a commer .... Local superstition stipulates the crater is bottomless. There are numerous small islands in the sou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atlantic Ocean
The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe and Asia from the "New World" of the Americas in the European perception of the World. The Atlantic Ocean occupies an elongated, S-shaped basin extending longitudinally between Europe and Africa to the east, and North and South America to the west. As one component of the interconnected World Ocean, it is connected in the north to the Arctic Ocean, to the Pacific Ocean in the southwest, the Indian Ocean in the southeast, and the Southern Ocean in the south (other definitions describe the Atlantic as extending southward to Antarctica). The Atlantic Ocean is divided in two parts, by the Equatorial Counter Current, with the North(ern) Atlantic Ocean and the South(ern) Atlantic Ocean split at about 8°N. Scientific explorations of the A ... [...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] |
Stalagmite
A stalagmite (, ; from the Greek , from , "dropping, trickling") is a type of rock formation that rises from the floor of a cave due to the accumulation of material deposited on the floor from ceiling drippings. Stalagmites are typically composed of calcium carbonate, but may consist of lava, mud, peat, pitch, sand, sinter, and amberat (crystallized urine of pack rats). The corresponding formation hanging down from the ceiling of a cave is a stalactite. 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 is that, as with ants in the pants, the mites go up and the tights (tites) come down. Formation and type Limestone stalagmites The most common stalagmites are speleothems, which usually form in limestone caves. Stalagmite formation occurs only under certain pH conditions within the cavern. They form through deposition of calcium carbonate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caves Of Bermuda
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, microorgani ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karst Caves
Karst is a topography formed from the dissolution of soluble rocks such as limestone, dolomite, and gypsum. It is characterized by underground drainage systems with sinkholes and caves. It has also been documented for more weathering-resistant rocks, such as quartzite, given the right conditions. Subterranean drainage may limit surface water, with few to no rivers or lakes. However, in regions where the dissolved bedrock is covered (perhaps by debris) or confined by one or more superimposed non-soluble rock strata, distinctive karst features may occur only at subsurface levels and can be totally missing above ground. The study of ''paleokarst'' (buried karst in the stratigraphic column) is important in petroleum geology because as much as 50% of the world's hydrocarbon reserves are hosted in carbonate rock, and much of this is found in porous karst systems. Etymology The English word ''karst'' was borrowed from German in the late 19th century, which entered German much earlier. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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