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Kilsby Sinkhole
The Kilsby sinkhole is a sinkhole located near Mount Gambier in South Australia. Since the late 1960s, the naturally occurring karst sinkhole has been used for recreational diving as well as civilian and police diver training. By visiting the Kilsby Sinkhole website, public can now access the site via a pre booked Sinkhole Tour or Snorkelling Tour. History The sinkhole is located on private property owned by the Kilsby family since the late 19th century. Due to insurance and liability concerns, access to the site is highly controlled. Some commercial dive companies teach diving at the site, and limited independent recreational diving and snorkelling is allowed. In the late 1960s cave and sinkhole diving gained popularity in the area, leading to frequent dives of inexperienced divers at the Kilsby sinkhole. On April 6, 1969, two such inexperienced divers died at the Kilsby sinkhole. Later that year, and until at least 1983, the Australian Department of Defence took on an exclusiv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moorak, South Australia
Moorak is a southern suburb of Mount Gambier – a city in South Australia. The name Moorak may be a native word for "Mountain", but not from the local tribe, according to Doctor Browne who was an early landowner. vide "History of the South East" page 124 by H.C.Talbot Moorak is located within the federal division of Barker, the state electoral district of Mount Gambier Mount Gambier is a single-member electoral district for the South Australian House of Assembly. It covers the far south-east corner of the state containing the City of Mount Gambier and District Council of Grant local government areas. It is ... and the local government area of the District Council of Grant. It is also part of Mount Gambier's urban sprawl. See also * Kilsby sinkhole References {{authority control Towns in South Australia Limestone Coast ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miocene
The Miocene ( ) is the first epoch (geology), geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recent" because it has 18% fewer modern marine invertebrates than the Pliocene has. The Miocene followed the Oligocene and preceded the Pliocene. As Earth went from the Oligocene through the Miocene and into the Pliocene, the climate slowly cooled towards a series of ice ages. The Miocene boundaries are not marked by distinct global events but by regionally defined transitions from the warmer Oligocene to the cooler Pliocene Epoch. During the Early Miocene, Afro-Arabia collided with Eurasia, severing the connection between the Mediterranean and Indian Oceans, and allowing the interchange of fauna between Eurasia and Africa, including the dispersal of proboscideans and Ape, hominoids into Eurasia. During the late Miocene, the conn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limestone
Limestone is a type of carbonate rock, carbonate sedimentary rock which is the main source of the material Lime (material), lime. It is composed mostly of the minerals calcite and aragonite, which are different Polymorphism (materials science), crystal forms of calcium carbonate . Limestone forms when these minerals Precipitation (chemistry), precipitate out of water containing dissolved calcium. This can take place through both biological and nonbiological processes, though biological processes, such as the accumulation of corals and shells in the sea, have likely been more important for the last 540 million years. Limestone often contains fossils which provide scientists with information on ancient environments and on the evolution of life. About 20% to 25% of sedimentary rock is carbonate rock, and most of this is limestone. The remaining carbonate rock is mostly Dolomite (rock), dolomite, a closely related rock, which contains a high percentage of the mineral Dolomite (mine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Gambier
Mount Gambier is the second most populated city in South Australia, with a population of 25,591 as of the 2021 census. The city is located on the slopes of Mount Gambier (volcano), Mount Gambier, a volcano in the south east of the state, about south-east of the capital Adelaide and just from the Victoria, Australia, Victorian border. The traditional owners of the area are the Bungandidj people, Bungandidj (or Buandik) people. Mount Gambier is the most important settlement in the Limestone Coast region and the seat of government for both the City of Mount Gambier and the District Council of Grant. The city is well known for its geographical features, particularly its volcanic and limestone features, most notably Blue Lake / Warwar, Blue Lake/Waawor/Warwar, and its parks, gardens, caves and Sinkhole, sinkholes. History Before British colonisation of South Australia, the Bungandidj (or Buandik/Boandik) people were the original Aboriginal Australian, Aboriginal inhabitants of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Australia
South Australia (commonly abbreviated as SA) is a States and territories of Australia, state in the southern central part of Australia. With a total land area of , it is the fourth-largest of Australia's states and territories by area, which includes some of the most arid parts of the continent, and with 1.8 million people. It is the fifth-largest of the states and territories by population. This population is the second-most highly centralised in the nation after Western Australia, with more than 77% of South Australians living in the capital Adelaide or its environs. Other population centres in the state are relatively small; Mount Gambier, the second-largest centre, has a population of 26,878. South Australia shares borders with all the other mainland states. It is bordered to the west by Western Australia, to the north by the Northern Territory, to the north-east by Queensland, to the east by New South Wales, to the south-east by Victoria (state), Victoria, and to the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karst
Karst () is a topography formed from the dissolution of soluble carbonate rocks such as limestone and Dolomite (rock), dolomite. It is characterized by features like poljes above and drainage systems with sinkholes and caves underground. There is some evidence that karst may occur in more weathering-resistant rocks such as quartzite given the right conditions. Subterranean drainage may limit surface water, with few to no rivers or lakes. 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 Oil and gas reserves and resource quantification, hydrocarbon reserves are hosted in carbonate rock, and much of this is found in porous karst systems. Etymology ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australian Department Of Defense
The Department of Defence, also known simply as Defence, is a department of the Australian Government that is responsible for administering the Australian Defence Force (ADF) and its related entities, and is charged with the defence of Australia and its national interests. Along with the ADF, it forms part of the larger Australian Defence Organisation (ADO) and is accountable to the Parliament of Australia, on behalf of the Australian people, for the efficiency and effectiveness with which it carries out government policy. The executive head of the department, who leads it on a day-to-day basis, independent of a change of government, is the Secretary of the Department of Defence (SECDEF), currently Greg Moriarty. SECDEF reports to the Minister for Defence, Richard Marles. History Australia has had at least one defence-related government department since Federation in 1901. The first Department of Defence existed from 1901 until 1921. In 1915, during World War I, a separat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barra Sonobuoy
Barra (; or ; ) is an island in the Outer Hebrides, Scotland, and the second southernmost inhabited island there, after the adjacent island of Vatersay to which it is connected by the Vatersay Causeway. In 2011, the population was 1,174. English and Gaelic are widely spoken, and at the 2011 Census, there were 761 Gaelic speakers (62% of the population, falling from 76% in the 1991 census). Geology In common with the rest of the Western Isles, Barra is formed from the oldest rocks in Britain, the Lewisian gneiss, which dates from the Archaean eon. Some of the gneiss in the east of the island is noted as being pyroxene-bearing. Layered textures or foliation in this metamorphic rock is typically around 30° to the east or northeast. Palaeoproterozoic age metadiorites and metatonalites forming a part of the East Barra Meta-igneous Complex occur around Castlebay as they do on the neighbouring islands of Vatersay and Flodday. A few metabasic dykes intrude the gneiss in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Australian Police
South Australia Police (SAPOL) is the police force of the Australian States and territories of Australia, state of South Australia. SAPOL is an independent statutory agency of the Government of South Australia directed by the Commissioner of Police, who reports to the Minister for Police. SAPOL provides Patrol, general duties policing, highway patrol, criminal investigation and emergency coordination services throughout the state. SAPOL is also responsible for road safety advocacy and education, and maintains the South Australian Road Safety Centre. the commissioner of police is Grant Stevens (police officer), Grant Stevens, who has been in the role since July 2015. History Early years Formally established on 28 April 1838 under the command of Inspector Henry Inman (police commander), Henry Inman, the force is the oldest in Australasia and is the third oldest organised police force in the world. The first force in the colony of South Australia consisted of 10 mounted const ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sinkholes Of Australia
A sinkhole is a depression or hole in the ground caused by some form of collapse of the surface layer. The term is sometimes used to refer to doline, enclosed depressions that are also known as shakeholes, and to openings where surface water enters into underground passages known as ''ponor'', swallow hole or swallet. A ''cenote'' is a type of sinkhole that exposes groundwater underneath. ''Sink'', and ''stream sink'' are more general terms for sites that drain surface water, possibly by infiltration into sediment or crumbled rock. Most sinkholes are caused by karst processes – the chemical dissolution of carbonate rocks, collapse or suffosion processes. Sinkholes are usually circular and vary in size from tens to hundreds of meters both in diameter and depth, and vary in form from soil-lined bowls to bedrock-edged chasms. Sinkholes may form gradually or suddenly, and are found worldwide. Formation Natural processes Sinkholes may capture surface drainage from runnin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limestone Coast
The Limestone Coast is a name used since the early 21st century for a Regions of South Australia#South Australian Government regions, South Australian government region located in the south east of South Australia which immediately adjoins the continental coastline and the Victoria (Australia), Victorian border. The name is also used for a tourist region and a List of wine-producing regions, wine zone both located in the same part of South Australia. Extent The Limestone Coast is a South Australian Government Region which consists of land within the following local government areas located in the south east of the state: the City of Mount Gambier and the District Councils of District Council of Grant, Grant, Kingston District Council, Kingston, District Council of Robe, Robe, Tatiara District Council, Tatiara and Naracoorte Lucindale Council, Naracoorte Lucindale and the Wattle Range Council, and the extent of "coastal waters" up to three nautical miles seaward of the low w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
