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Gregory River (Australia)
The Gregory River ( Waanyi: Ngumarryina) is a river located in the Northern Territory and the state of Queensland, Australia. The river is the largest perennial river in arid and semi-arid Queensland, one of the few permanently flowing rivers in the northwest of Queensland. Course and features The headwaters of the river rise on the north-eastern section of the Barkly Tableland in the Northern Territory, in an area of gently undulating downs country dominated by cattle stations. The river is fed by springs in shallow valleys and it then flows eastwards through an area of well developed canyons in Queensland. The river is joined by one of its major tributaries, the O'Shanassy River, a little downstream of Riversleigh. Another main tributary Lawn Hill Creek discharges into the Gregory further downstream of Gregory Downs. The Gregory discharges into the Nicholson River to the southwest of Burketown, having descended over its course. The river has a catchment area of approxi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Augustus Gregory
Sir Augustus Charles Gregory (1 August 1819 – 25 June 1905) was an English-born Australian explorer and surveyor. Between 1846 and 1858 he undertook four major expeditions. He was the first Surveyor General of Queensland, Surveyor-General of Queensland. He was appointed a lifetime Member of the Queensland Legislative Council. Early years Augustus Charles Gregory was born at Farnsfield, Nottingham, England. He was the second of five brothers born to Joshua Gregory and Frances Churchman. Among his brothers were Francis Thomas Gregory, who also became a noted explorer. #Joshua William Gregory, born 1815, died 20 September 1850 aged 35. #Augustus Charles Gregory, born 1 August 1819, died 1905 aged 86 #Francis (Frank) Thomas Gregory, born 1821. #Henry Churcham Gregory, born 1823, died London 29 July 1903 aged 79 years #Charles Frederick Gregory, born 1825. A. C. Gregory was educated privately by tutors and later by his mother. In 1829, the family emigrated to Western Australia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bureau Of Meteorology
The Bureau of Meteorology (BOM or BoM) is an executive agency of the Australian Government responsible for providing weather services to Australia and surrounding areas. It was established in 1906 under the Meteorology Act, and brought together the state meteorological services that existed before then. The states officially transferred their weather recording responsibilities to the Bureau of Meteorology on 1 January 1908. History The Bureau of Meteorology was established on 1 January 1908 following the passage of the ''Meteorology Act 1906''. Prior to Federation in 1901, each colony had had its own meteorological service, with all but two colonies also having a subsection devoted to astronomy. In August 1905, federal home affairs minister Littleton Groom surveyed state governments for their willingness to cede control, finding South Australia and Victoria unwilling. However, at a ministerial conference in April 1906 the state governments agreed to transfer responsibility for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eucalyptus Microtheca
''Eucalyptus microtheca'', commonly known as the coolibah, is a species of tree that is endemic to northern Australia. It has rough, flaky or fibrous bark on the trunk and branches, lance-shaped adult leaves, flower buds in groups of seven, white flowers and spherical to conical fruit. It is widely distributed from the Kimberley region of Western Australia to Cape York in Queensland. Description ''Eucalyptus microtheca'' is a tree, sometimes a mallee, that typically grows to a height of and forms a lignotuber. It has a whitish grey to dark grey, box-type bark that is often deeply fissured, coarsely flaky or tessellated as it ages. Young plants and coppice regrowth have narrow lance-shaped leaves that are long, wide and petiolate. Adult plants have leaves that are the same shade of dull green to bluish on both sides, lance-shaped to curved, long and wide, tapering to a petiole long. The flower buds are arranged on a thin, branched peduncle in groups of seven, the peduncl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eucalyptus Tectifica
''Eucalyptus tectifica'', commonly known as Darwin box, or grey box, is a species of tree that is endemic to northern Australia. It has rough, fibrous or flaky bark on the trunk and branches, lance-shaped or curved adult leaves, flower buds usually in groups of seven, creamy white flowers and conical, cup-shaped or barrel-shaped fruit. Description ''Eucalyptus tectifica'' is a tree that typically grows to a height of and forms a lignotuber. It has rough, fibrous or flaky greyish bark on the trunk and branches. The tree is deciduous or partly deciduous during the dry season. Young plants and coppice regrowth have egg-shaped to broadly lance-shaped leaves that are long and wide and petiolate. Adult leaves are the same shade of green on both sides, lance-shaped or curved, long and wide, tapering to a petiole long. The flower buds are arranged on the ends of branchlets, usually in groups of seven, on a thin branching peduncle long, the individual buds on pedicels long. Mature ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corymbia Papuana
''Corymbia papuana'', commonly known as ghost gum, is a species of evergreen tree native to New Guinea, some Torres Strait Islands and the northern part of the Cape York Peninsula in Australia. It has smooth whitish bark, lance-shaped adult leaves, flower buds in groups of three or seven, creamy white flowers and barrel-shaped or urn-shaped fruit. Description ''Corymbia papuana'' is a tree that typically grows to a height of and forms a lignotuber. It has smooth white, creamy white or pale grey bark. Young plants and coppice regrowth have hairy, elliptic to egg-shaped or lance-shaped leaves that are long and wide on a short petiole. Adult leaves are arranged alternately, the same shade of dull green on both sides, lance-shaped, long and wide on a petiole long. The flower buds are arranged in leaf axils on a branched peduncle long, each branch of the peduncle with three or seven buds on pedicels long. Mature buds are pear-shaped, long and wide with a rounded operculum t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pedocal
Pedocal is a subdivision of the zonal soil order. It is a class of soil which forms in semiarid and arid regions. It is rich in calcium carbonate and has low soil organic matter. With only a thin A horizon (topsoil), and intermittent precipitation calcite, other soluble minerals ordinarily removed by water may build up in the B horizon (subsoil) forming a cemented layer known as caliche. It is not used in the current United States system of soil classification but the term commonly shows up in college geology texts. See also * Pedalfer * USDA soil taxonomy USDA soil taxonomy (ST) developed by the United States Department of Agriculture and the National Cooperative Soil Survey provides an elaborate classification of soil types according to several parameters (most commonly their properties) and in ... References {{cite book , last = Marshak , first = Stephen , title = Essentials of Geology , edition = (First Edition) , year = 2004 , publisher = W. W. Norton & C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eulalia (plant)
''Eulalia'' is a genus of Asian, African, and Australian plants in the grass family.Kunth, Karl Sigismund 1829. Révision des Graminées 1: 160–161 in Latin ''Eulalia'' was named after the French botanical artist Eulalie Delile.Watson, L. and M. J. Dallwitz. (1992 onwards) ''Eulalia''. Grass Genera of the World. Version: 18 August 1999. As a common name, "eulalia" refers to a grass in a different genus, '' |
Astrebla
''Astrebla'' is a small genus of xerophytic (adapted to survive in an environment with little liquid water) grasses found only in Australia. They are the dominant grass across much of the continent. They are commonly known as Mitchell grass after Scottish explorer, Thomas Mitchell (1792-1855), who first collected a specimen near Bourke in New South Wales. Mitchell grasses grow on clay soils, mainly between an upper limit of and a lower limit of average annual rainfall, and at even lower rainfall in depressions where the water concentrates following rains, for example in Sturt's Stony Desert. Mitchell grasses are deep-rooted and become dormant during drought, allowing them to survive extended periods without rainfall. They are commonly found clumped together and reaching one metre high, providing habitat for organisms such as mammals. ; Species See also * List of Poaceae genera The true grasses ( Poaceae) are one of the largest plant families, with around 12,000 specie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wetland
A wetland is a distinct ecosystem that is flooded or saturated by water, either permanently (for years or decades) or seasonally (for weeks or months). Flooding results in oxygen-free (anoxic) processes prevailing, especially in the soils. The primary factor that distinguishes wetlands from terrestrial land forms or Body of water, water bodies is the characteristic vegetation of aquatic plants, adapted to the unique anoxic hydric soils. Wetlands are considered among the most biologically diverse of all ecosystems, serving as home to a wide range of plant and animal species. Methods for assessing wetland functions, wetland ecological health, and general wetland condition have been developed for many regions of the world. These methods have contributed to wetland conservation partly by raising public awareness of the functions some wetlands provide. Wetlands occur naturally on every continent. The water in wetlands is either freshwater, brackish or saltwater. The main wetland typ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dolomite (rock)
Dolomite (also known as dolomite rock, dolostone or dolomitic rock) is a sedimentary carbonate rock that contains a high percentage of the mineral dolomite, CaMg(CO3)2. It occurs widely, often in association with limestone and evaporites, though it is less abundant than limestone and rare in Cenozoic rock beds (beds less than about 66 million years in age). The first geologist to distinguish dolomite rock from limestone was Belsazar Hacquet in 1778. Most dolomite was formed as a magnesium replacement of limestone or of lime mud before lithification. The geological process of conversion of calcite to dolomite is known as dolomitization and any intermediate product is known as dolomitic limestone. The "dolomite problem" refers to the vast worldwide depositions of dolomite in the past geologic record in contrast to the limited amounts of dolomite formed in modern times. Recent research has revealed sulfate-reducing bacteria living in anoxic conditions precipitate dolomite whic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limestone
Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms when these minerals 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, a closely related rock, which contains a high percentage of the mineral dolomite, . ''Magnesian limestone'' is an obsolete and poorly-defined term used variously for dolomite, for lime ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
James Cook University
James Cook University (JCU) is a public university in North Queensland, Australia. The second oldest university in Queensland, JCU is a teaching and research institution. The university's main campuses are located in the tropical cities of Cairns and Townsville, and one in the city state of Singapore. JCU also has study centres in Mount Isa, Mackay, Thursday Island and Rockhampton. A Brisbane campus, operated by Russo Higher Education, delivers undergraduate and postgraduate courses to international and domestic students. The university's main fields of research include environmental sciences, biological sciences, mathematical sciences, earth sciences, agricultural and veterinary sciences, technology and medical and health sciences. History In 1957, Professor John Douglas Story, vice chancellor of the University of Queensland, proposed a regional university college be established to cater to the people of North Queensland. At that time, the only higher education providers were l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
