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Holt, Australian Capital Territory
Holt () (postcode: 2615) is a suburb in the Belconnen district of Canberra, located within the Australian Capital Territory, Australia. It was gazetted on 2 July 1970 and was named after Harold Holt, Prime Minister of Australia 1966–67. Streets are named after sportsmen and sportswomen. Holt is bounded by Southern Cross Drive, Starke Street, MacNaughton Street, Drake Brockman Drive and the edge of the Belconnen Magpies golf course. It also borders on open farm and bushland, and is a short distance away from the Molongolo river. Ginninderra Falls Tourist Park and Parkwood, a very small light industrial area, are also nearby. It adjoins the suburbs of Higgins, Latham, Macgregor and Strathnairn. The suburb contains Kippax Centre, a group centre serving the surrounding area, including the Kippax Fair shopping centre. Facilities Holt has multiple local shops, a neighbourhood oval, sporting fields, and Kingsford Smith School on the site of the former Ginninderra High School. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ginninderra Electorate
The Ginninderra electorate is one of the five Electorates of the Australian Capital Territory, electorates for the unicameral 25-member Australian Capital Territory Legislative Assembly. It elects five members. History It was created in 1995, when the three-electorate, Hare-Clark electoral system was first introduced for the Australian Capital Territory (ACT). Prior to 1995, a multi-member single constituency existed for the whole of the ACT. The name "Ginninderra" is derived from an Aboriginal word meaning "sparkling like the stars". It is the name given to the creek that flows through the middle of Belconnen, which was dammed to form Lake Ginninderra, the lake on which the Belconnen Town Centre is sited. Location The Ginninderra electorate comprises the southern part of the district of Belconnen, including the suburbs of Aranda, Australian Capital Territory, Aranda, Belconnen, Australian Capital Territory, Belconnen, Bruce, Australian Capital Territory, Bruce, Charnwood, Austra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kippax Centre, Australian Capital Territory
Kippax Fair is a shopping centre in the western Canberra suburb of Holt, Australian Capital Territory, Australia. Named after cricketer Alan Kippax, it serves the West Belconnen region, and is anchored by a Woolworths Supermarket, an Aldi discount supermarket, and other stores, restaurants, cafeterias, bars, and community services. History In 1974, as the region of West Belconnen was slowly emerging, an approach was made by the ACT Government to build a sizeable shopping centre on a large plot of land neighbouring the Parkwood industrial estate. Its original design was to encompass one indoor shopping complex and two outdoor strip malls, now housing the majority of the centre's north-eastern wing. It opened in March 1976. In the late 1980s, with the area population growing steadily and competition arising from the newly opened Belconnen Mall (now Westfield Belconnen), development began on the area now housing Woolworths, as well as building another strip mall on Kippax Place ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Porphyry (geology)
Porphyry ( ) is any of various granites or igneous rocks with coarse-grained crystals such as feldspar or quartz dispersed in a fine-grained silicate-rich, generally aphanitic matrix or groundmass. In its non-geologic, traditional use, the term ''porphyry'' usually refers to the purple-red form of this stone, valued for its appearance, but other colours of decorative porphyry are also used such as "green", "black" and "grey". The term ''porphyry'' is from the Ancient Greek (), meaning " purple". Purple was the colour of royalty, and the Roman "imperial porphyry" was a deep purple igneous rock with large crystals of plagioclase. Some authors claimed the rock was the hardest known in antiquity. Thus porphyry was prized for monuments and building projects in Imperial Rome and thereafter. Subsequently, the name was given to any igneous rocks with large crystals. The adjective ''porphyritic'' now refers to a certain texture of igneous rock regardless of its chemical and miner ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shale
Shale is a fine-grained, clastic sedimentary rock formed from mud that is a mix of flakes of Clay mineral, clay minerals (hydrous aluminium phyllosilicates, e.g., Kaolinite, kaolin, aluminium, Al2Silicon, Si2Oxygen, O5(hydroxide, OH)4) and tiny fragments (silt-sized particles) of other minerals, especially quartz and calcite.Blatt, Harvey and Robert J. Tracy (1996) ''Petrology: Igneous, Sedimentary and Metamorphic'', 2nd ed., Freeman, pp. 281–292 Shale is characterized by its tendency to split into thin layers (Lamination (geology), laminae) less than one centimeter in thickness. This property is called ''Fissility (geology), fissility''. Shale is the most common sedimentary rock. The term ''shale'' is sometimes applied more broadly, as essentially a synonym for mudrock, rather than in the narrower sense of clay-rich fissile mudrock. Texture Shale typically exhibits varying degrees of fissility. Because of the parallel orientation of clay mineral flakes in shale, it breaks in ... [...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] |
Rhyodacite
Rhyodacite is a volcanic rock intermediate in composition between dacite and rhyolite. It is the extrusive equivalent of those plutonic rocks that are intermediate in composition between monzogranite and granodiorite. Rhyodacites form from rapid cooling of lava relatively rich in silica and low in alkali metal oxides. Description Under IUGS guidelines, rhyodacites are not formally defined in either the QAPF classification, used to classify igneous rocks by their mineral content, or the TAS classification, used to classify volcanic rocks chemically. However, the IUGS allows the use of the term to describe rocks close to the boundary between the rhyolite and dacite fields in each classification scheme. Rhyodacite then describes a fine-grained igneous rock containing between 20% and 60% quartz and in which plagioclase makes up about two-thirds of the total feldspar content. Such a rock will contain between 69% and 72% silica by weight. The U.S. Geological Survey defines rhyodacite ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tuff
Tuff is a type of rock made of volcanic ash ejected from a vent during a volcanic eruption. Following ejection and deposition, the ash is lithified into a solid rock. Rock that contains greater than 75% ash is considered tuff, while rock containing 25% to 75% ash is described as ''tuffaceous'' (for example, ''tuffaceous sandstone''). A pyroclastic rock containing 25–75% volcanic bombs or volcanic blocks is called tuff breccia. Tuff composed of sandy volcanic material can be referred to as volcanic sandstone. Tuff is a relatively soft rock, so it has been used for construction since ancient times. Because it is common in Italy, the Romans used it often for construction. The Rapa Nui people used it to make most of the ''moai'' statues on Easter Island. Tuff can be classified as either igneous or sedimentary rock. It is usually studied in the context of igneous petrology, although it is sometimes described using sedimentological terms. Tuff is often erroneously called t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhyolite
Rhyolite ( ) is the most silica-rich of volcanic rocks. It is generally glassy or fine-grained (aphanitic) in texture (geology), texture, but may be porphyritic, containing larger mineral crystals (phenocrysts) in an otherwise fine-grained matrix (geology), groundmass. The mineral assemblage is predominantly quartz, sanidine, and plagioclase. It is the extrusive equivalent of granite. Its high silica content makes rhyolitic magma extremely viscosity, viscous. This favors explosive eruptions over effusive eruptions, so this type of magma is more often erupted as pyroclastic rock than as lava flows. Rhyolitic ash-flow tuffs are among the most voluminous of continental igneous rock formations. Rhyolitic tuff has been used extensively for construction. Obsidian, which is rhyolitic volcanic glass, has been used for tools from prehistoric times to the present day because it can be shaped to an extremely sharp edge. Rhyolitic pumice finds use as an abrasive, in concrete, and as a soil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silurian
The Silurian ( ) is a geologic period and system spanning 23.5 million years from the end of the Ordovician Period, at million years ago ( Mya), to the beginning of the Devonian Period, Mya. The Silurian is the third and shortest period of the Paleozoic Era, and the third of twelve periods of the Phanerozoic Eon. As with other geologic periods, the rock beds that define the period's start and end are well identified, but the exact dates are uncertain by a few million years. The base of the Silurian is set at a series of major Ordovician–Silurian extinction events when up to 60% of marine genera were wiped out. One important event in this period was the initial establishment of terrestrial life in what is known as the Silurian-Devonian Terrestrial Revolution: vascular plants emerged from more primitive land plants, dikaryan fungi started expanding and diversifying along with glomeromycotan fungi, and three groups of arthropods ( myriapods, arachnids and hexapods) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australian Capital Territory Legislative Assembly
The Legislative Assembly for the Australian Capital Territory, known in short as the ACT Legislative Assembly, is the unicameral legislature of the Australian Capital Territory (ACT). It sits in the Legislative Assembly Building, Canberra, Legislative Assembly Building on Civic Square, close to City, Australian Capital Territory, the centre of the city of Canberra. Unlike the legislatures of the other mainland states and territories, the Assembly also has the functions of a local council; the city of Canberra has no other local government. It replaced the Australian Capital Territory House of Assembly, House of Assembly when the ACT was granted self-government in 1986. Voters had previously rejected self government in a 1978 plebiscite. Structure and Membership The Legislative Assembly has 25 members, elected from five electorates ― Brindabella electorate, Brindabella, Ginninderra electorate, Ginninderra, Kurrajong electorate, Kurrajong, Murrumbidgee electorate, Murrumbidgee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australian Electoral Commission
The Australian Electoral Commission (AEC) is the independent statutory agency of the Australian Government responsible for the management and oversight of Australian federal elections, plebiscites, referendums and some trade union A trade union (British English) or labor union (American English), often simply referred to as a union, is an organization of workers whose purpose is to maintain or improve the conditions of their employment, such as attaining better wages ... elections. History The ''Commonwealth Electoral Act 1902'' set up the framework for the Commonwealth electoral system, which was administered until 1916 as a branch of the Department of Home Affairs (1901–16), Department of Home Affairs, by the Department of Home and Territories until 1928, back to Department of Home Affairs (1928–32), Department of Home Affairs to 1932, and then Department of the Interior (1932–39), Department of the Interior until 1972. The Australian Electoral Office was cre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australian House Of Representatives
The House of Representatives is the lower house of the bicameralism, bicameral Parliament of Australia, the upper house being the Australian Senate, Senate. Its composition and powers are set out in Chapter I of the Constitution of Australia. The term of members of the House of Representatives is a maximum of three years from the date of the first sitting of the House, but on only 1910 Australian federal election, one occasion since Federation has the maximum term been reached. The House is almost always dissolved earlier, usually alone but sometimes in a double dissolution alongside the whole Senate. Elections for members of the House of Representatives have always been held in conjunction with those for the Senate since the 1970s. A member of the House may be referred to as a "Member of Parliament" ("MP" or "Member"), while a member of the Senate is usually referred to as a "senator". Under the conventions of the Westminster system, the Australian Government, government of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
