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Williamsdale, Australian Capital Territory
Williamsdale is the name sometimes given to the unbounded locality situated immediately on the north-west side of the Australian Capital Territory border abutting the locality of Williamsdale in the Southern Tablelands region of New South Wales, Australia. The Monaro Highway and the former Bombala railway pass through the area. A railway station saw service until 1975. The postcode is 2620. The Australian Capital Territory portion is located in the District of Tuggeranong. Structure The Australian Bureau of Statistics included the ACT part of Williamsdale in an area called "Tuggeranong (SA2)". This statistical area also includes the ACT part of Royalla and all the rural territory between the Murrumbidgee River and the NSW border. It had a population of 43 at the . The part in NSW had a population of 65 at that census. The part of Williamsdale in NSW is itself split up by two Local Government Areas, in the north to Queanbeyan–Palerang and in the south to Snowy Monaro. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brindabella Electorate
Brindabella may refer to: * Brindabella Airlines * Brindabella Business Park, part of Canberra Airport * Brindabella College in O'Connor, Australian Capital Territory * Brindabella electorate * The Brindabella Ranges * Brindabella National Park * ''Brindabella'' (yacht), a yacht that won the Sydney to Hobart Yacht Race in 1991 & 1997 * Brindabella Road * Brindabella Station Brindabella Station, sometimes referred to as the Brindabella Homestead, is located within the Brindabella Ranges in the state of New South Wales, Australia. It was the childhood home of the Australian author Miles Franklin. Brindabella was first ..., the childhood home of Miles Franklin * Brindabella Valley, the valley of the Goodradigbee River * Brindabella, New South Wales * Brindabellas, a housing estate in Bonython, Australian Capital Territory {{disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snowy Monaro Regional Council
The Snowy Monaro Regional Council is a local government area located in the Snowy Mountains and Monaro regions of New South Wales, Australia. The council was formed on 12 May 2016 through a merger of the Bombala, Cooma-Monaro and Snowy River shires. The council comprises an area of and occupies the higher slopes of the eastern side of the Great Dividing Range between the Australian Capital Territory to the north and the state boundary with Victoria to the south. At the time of its establishment the council had an estimated population of . Its population at the was 20,218. The Mayor of the Snowy Monaro Regional Council is Narelle Davis. Towns and localities The following towns are located within Snowy Monaro Regional Council: The following localities are located within Snowy Monaro Regional Council: Heritage listings The Snowy Monaro Region has a number of heritage-listed sites, including: * Bombala, Goulburn-Bombala railway: Bombala railway station * Bombala, 91 Main R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Stromlo
Mount Stromlo (formerly Mount Strom ) is a mountain with an elevation of that is situated in the Australian Capital Territory, Australia. The mountain is most notable as the location of the Mount Stromlo Observatory. The mountain forms part of the catchment area of the Cotter River which in turn is the primary water supply for part of ACT. Geology The rock on Mount Stromlo consists of ignimbrite from the Laidlaw Volcanics. This erupted in the upper Silurian period over the top of the Deakin Volcanics rhyodacite which is visible on the surface on the lower slopes in the east and southeast sides. The northern lower slopes are covered with a calcareous shale which is included in the Laidlaw Volcanics as it was deposited at the same time. This is cut off on the northwest side by the Winslade Fault, which heads north east to and . A spur fault heads off east from the Winslade Fault to under the Scrivener Dam. On the northwest and north side of these faults are middle Si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bredbo, New South Wales
Bredbo is a village on the Monaro plains of New South Wales, Australia. The village is on the Monaro Highway north of Cooma. The village is in the Snowy Monaro Regional Council and had a population of 352 at the . History Located at the junction of the Bredbo and Murrumbidgee rivers, the Bredbo area was historically prone to flooding. As a way-point on the road from Sydney to the Snowy Mountains, travellers were frequently stranded by rising water. By 1839 the Bredbo Inn had been established to accommodate travelers. The Inn was a Cobb and Co stagecoach post, with stables located behind the Inn which are still standing today. The surrounding settlement was developed to support squatters' runs established in the district between 1848 and 1850. Bredbo was officially proclaimed a village in 1888. Gold was discovered in the area by the Reverend William Branwhite Clarke, who also discovered gold at Kiandra A field was proclaimed along the Bredbo River, which was worked until ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Michelago, New South Wales
Michelago is a village in the Monaro region of New South Wales, Australia. The village is in the Snowy Monaro Regional Council local government area, south of Canberra on the Monaro Highway. It was founded in the 1820s, on the main route from Sydney to the Snowy Mountains. At the , Michelago had a population of 562. Location Michelago is situated in a valley between two mountain ranges, the Tinderry Range to the East and the Clear Range to the west. The Tinderry Road crosses the Tinderry range from Michelago, leading ultimately to the 1950s silver mining settlement Captains Flat. The highest peaks in the picturesque Tinderry Range reach approximately 1600m above sea level, while Michelago itself has an elevation of around 800m. The Murrumbidgee River separates the village from the Clear Range. The Michelago Creek passes through the village, and is a source of water for the residents. Its catchment area is in the Tinderry Range, and after passing the town the creek flows into ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dacite
Dacite () is a volcanic rock formed by rapid solidification of lava that is high in silica and low in alkali metal oxides. It has a fine-grained (aphanitic) to porphyritic texture and is intermediate in composition between andesite and rhyolite. It is composed predominantly of plagioclase feldspar and quartz. Dacite is relatively common, occurring in many tectonic settings. It is associated with andesite and rhyolite as part of the subalkaline tholeiitic and calc-alkaline magma series. Composition Dacite consists mostly of plagioclase feldspar and quartz with biotite, hornblende, and pyroxene ( augite or enstatite). The quartz appears as rounded, corroded phenocrysts, or as an element of the ground-mass. The plagioclase in dacite ranges from oligoclase to andesine and labradorite. Sanidine occurs, although in small proportions, in some dacites, and when abundant gives rise to rocks that form transitions to the rhyolites. The relative proportions of feldspars and quartz ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silurian
The Silurian ( ) is a geologic period and system spanning 24.6 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 shortest period of the Paleozoic Era. 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) became fully terrestrialized. A significant evolutionary milestone ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leucoxene
Leucoxene is a fine granular alteration product of titanium minerals. It varies in color from yellow to brown. It consists mainly of rutile or anatase. It is observed in some igneous rocks and iron ore deposits as the result of the alteration of ilmenite, perovskite, or titanite Titanite, or sphene (from the Greek ''sphenos'' (σφηνώ), meaning wedge), is a calcium titanium nesosilicate mineral, Ca Ti Si O5. Trace impurities of iron and aluminium are typically present. Also commonly present are rare earth metals .... References * Hurlbut, Cornelius S.; Klein, Cornelis, 1985, Manual of Mineralogy, 20th ed., Mindat.org Oxide minerals {{oxide-mineral-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epidote
Epidote is a calcium aluminium iron sorosilicate mineral. Description Well developed crystals of epidote, Ca2Al2(Fe3+;Al)(SiO4)(Si2O7)O(OH), crystallizing in the monoclinic system, are of frequent occurrence: they are commonly prismatic in habit, the direction of elongation being perpendicular to the single plane of symmetry. The faces are often deeply striated and crystals are often twinned. Many of the characters of the mineral vary with the amount of iron present for instance, the color, the optical constants, and the specific gravity. The color is green, grey, brown or nearly black, but usually a characteristic shade of yellowish-green or pistachio-green. It displays strong pleochroism, the pleochroic colors being usually green, yellow and brown. Clinozoisite is green, white or pale rose-red group species containing very little iron, thus having the same chemical composition as the orthorhombic mineral zoisite. The name, due to Haüy, is derived from the Greek word "epid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chlorite Group
The chlorites are the group of phyllosilicate minerals common in low-grade metamorphic rocks and in altered igneous rocks. Greenschist, formed by metamorphism of basalt or other low-silica volcanic rock, typically contains significant amounts of chlorite. Chlorite minerals show a wide variety of compositions, in which magnesium, iron, aluminium, and silicon substitute for each other in the crystal structure. A complete solid solution series exists between the two most common end members, magnesium-rich clinochlore and iron-rich chamosite. In addition, manganese, zinc, lithium, and calcium species are known. The great range in composition results in considerable variation in physical, optical, and X-ray properties. Similarly, the range of chemical composition allows chlorite group minerals to exist over a wide range of temperature and pressure conditions. For this reason chlorite minerals are ubiquitous minerals within low and medium temperature metamorphic rocks, some igne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biotite
Biotite is a common group of phyllosilicate minerals within the mica group, with the approximate chemical formula . It is primarily a solid-solution series between the iron- endmember annite, and the magnesium-endmember phlogopite; more aluminous end-members include siderophyllite and eastonite. Biotite was regarded as a mineral ''species'' by the International Mineralogical Association until 1998, when its status was changed to a mineral ''group''. The term ''biotite'' is still used to describe unanalysed dark micas in the field. Biotite was named by J.F.L. Hausmann in 1847 in honor of the French physicist Jean-Baptiste Biot, who performed early research into the many optical properties of mica. Members of the biotite group are sheet silicates. Iron, magnesium, aluminium, silicon, oxygen, and hydrogen form sheets that are weakly bound together by potassium ions. The term "iron mica" is sometimes used for iron-rich biotite, but the term also refers to a flaky mi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Feldspar
Feldspars are a group of rock-forming aluminium tectosilicate minerals, also containing other cations such as sodium, calcium, potassium, or barium. The most common members of the feldspar group are the ''plagioclase'' (sodium-calcium) feldspars and the ''alkali'' (potassium-sodium) feldspars. Feldspars make up about 60% of the Earth's crust, and 41% of the Earth's continental crust by weight. Feldspars crystalize from magma as both intrusive and extrusive igneous rocks and are also present in many types of metamorphic rock. Rock formed almost entirely of calcic plagioclase feldspar is known as anorthosite. Feldspars are also found in many types of sedimentary rocks. Compositions The feldspar group of minerals consists of tectosilicates, silicate minerals in which silicon ions are linked by shared oxygen ions to form a three-dimensional network. Compositions of major elements in common feldspars can be expressed in terms of three endmembers: * potassium feldspar (K- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
