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Rawnsley's Bluff
Rawnsley Bluff (formerly Rawnsley's Bluff) is a geological feature in the Australian state of South Australia located in the locality of Flinders Ranges, South Australia and within the boundaries of the Ikara-Flinders Ranges National Park. It is a bluff that is part of Wilpena Pound, and it is south of St Mary Peak (St Mary Peak is the tallest in the Flinders Ranges at ). Rawnsley's Bluff connects the eastern and western mountain ranges of the pound. The Adelaide Scotch College Cadet Unit used the bluff for training each year until the unit was disbanded in the early 1970s.Peter Read, Alex Pouw-Bray - Ninety Years at Torrens Park: The Scotch College Story - Page 154 (Google Books) Training included flights with |
Flinders Ranges, South Australia
__NOTOC__ Flinders Ranges is a locality in the Australian state of South Australia located in the mountain range of the same name, about north of the state capital of Adelaide, about north-east of the municipal seat in Quorn and about north-east of the regional centre of Port Augusta. Its boundaries were created in April 2013, with the name selected in respect to the ‘long established local name’. Its southern boundary was altered in November 2013 with the addition of land from Hawker and the transfer of land to Shaggy Ridge. The sites of the government towns of Edeowie and Mernmerna are also within its boundaries. These town were both surveyed in 1863. Edeowie Post Office was open from to 1876 and then from 1879 to 1881, while Mernmerna Post Office was open from 1874 to 1881 and then again for a period in 1905. Flinders Ranges consists of the part of the mountain range between the ‘town centre’ of Hawker in the south and the 'town centre' of Parachilna in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bluff (geography)
In geography and geology, a cliff is an area of rock which has a general angle defined by the vertical, or nearly vertical. Cliffs are formed by the processes of weathering and erosion, with the effect of gravity. Cliffs are common on coasts, in mountainous areas, escarpments and along rivers. Cliffs are usually composed of rock that is resistant to weathering and erosion. The sedimentary rocks that are most likely to form cliffs include sandstone, limestone, chalk, and dolomite. Igneous rocks such as granite and basalt also often form cliffs. An escarpment (or scarp) is a type of cliff formed by the movement of a geologic fault, a landslide, or sometimes by rock slides or falling rocks which change the differential erosion of the rock layers. Most cliffs have some form of scree slope at their base. In arid areas or under high cliffs, they are generally exposed jumbles of fallen rock. In areas of higher moisture, a soil slope may obscure the talus. Many cliffs also featur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flinders Ranges
The Flinders Ranges are the largest mountain range in South Australia, which starts about north of Adelaide. The ranges stretch for over from Port Pirie to Lake Callabonna. The Adnyamathanha people are the Aboriginal group who have inhabited the range for tens of thousands of years. Its most well-known landmark is Wilpena Pound / Ikara, a formation that creates a natural amphitheatre covering and containing the range's highest peak, St Mary Peak (). The ranges include several national parks, the largest being the Ikara-Flinders Ranges National Park, as well as other protected areas. It is an area of great geological and palaeontological significance, and includes the oldest fossil evidence of animal life was discovered. The Ediacaran Period and Ediacaran biota take their name from the Ediacara Hills within the ranges. In August 2022, a nomination for the Flinders Ranges to be named a World Heritage Site was lodged. History The first humans to inhabit the Flinders ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wilpena Pound
Wilpena Pound – also known by its Adnyamathanha language, Adnyamathanha name of Ikara, meaning "meeting place" – is a natural amphitheatre of mountains located north of Adelaide, South Australia, Australia in the heart of the Ikara-Flinders Ranges National Park. It is accessible via a sealed road which continues on to the northern Flinders Ranges, South Australia, Flinders Ranges town of Blinman, South Australia, Blinman and to the south, Hawker, South Australia, Hawker. Attempts at farming the Pound failed during the early 20th century. Following this, the tourism potential was recognised in 1945. Geomorphology The area is part of the Adelaide Geosyncline. Despite early amateur theories that it was some kind of ancient volcano, the actual Pound is a syncline, synclinal basin, with the fold axis running NNW-SSE through Edeowie Gorge at the northern end and Rawnsley's Bluff at the southern. A corresponding anticline is located in the adjacent Moralana Gorge, with the Elder ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geological
Geology () is a branch of natural science concerned with Earth and other astronomical objects, the features or rocks of which it is composed, and the processes by which they change over time. Modern geology significantly overlaps all other Earth sciences, including hydrology, and so is treated as one major aspect of integrated Earth system science and planetary science. Geology describes the structure of the Earth on and beneath its surface, and the processes that have shaped that structure. It also provides tools to determine the relative and absolute ages of rocks found in a given location, and also to describe the histories of those rocks. By combining these tools, geologists are able to chronicle the geological history of the Earth as a whole, and also to demonstrate the age of the Earth. Geology provides the primary evidence for plate tectonics, the evolutionary history of life, and the Earth's past climates. Geologists broadly study the properties and processes of Ear ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Australia
South Australia (commonly abbreviated as SA) is a state in the southern central part of Australia. It covers some of the most arid parts of the country. With a total land area of , it is the fourth-largest of Australia's states and territories by area, and second smallest state by population. It has a total of 1.8 million people. Its population is the second most highly centralised in Australia, after Western Australia, with more than 77 percent 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 33,233. South Australia shares borders with all of the other mainland states, as well as the Northern Territory; 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, and to the south by the Great Australian Bight.M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beach Ridge
A beach ridge is a wave-swept or wave-deposited ridge running parallel to a shoreline. It is commonly composed of sand as well as sediment worked from underlying beach material. The movement of sediment by wave action is called ''littoral transport''. Movement of material parallel to the shoreline is called ''longshore transport''. Movement perpendicular to the shore is called ''on-offshore transport''. A beach ridge may be capped by, or associated with, sand dunes. The height of a beach ridge is affected by wave size and energy. A fall in water level (or an uplift of land) can isolate a beach ridge from the body of water that created it. Isolated beach ridges may be found along dry lakes in the western United States and inland of the Great Lakes of North America, where they formed at the end of the last ice age when lake levels were much higher due to glacial melting and obstructed outflow caused by glacial ice. Some isolated beach ridges are found in parts of Scandinavia, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
St Mary Peak
__NOTOC__ St Mary Peak / Ngarri Mudlanha is a mountain located in the Australian state of South Australia on the northwestern side of Ikara. It is the highest peak in the Flinders Ranges and the eighth highest peak in South Australia, with a height of . It is located within the Ikara–Flinders Ranges National Park and the gazetted locality of Flinders Ranges, South Australia. It was for a time known as "St Mary's Peak", but was renamed according to guidelines deprecating the use of names implying possession. The Adnyamathanha people have expressed concern with tourists trekking to the peak as they regard it as a sacred place and not to be visited. However, the peak and its surroundings may be accessed via a walking trail from Wilpena Resort along the north-east edge of the range outside of Ikara, or via a longer trail through the middle of the pound. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scotch College, Adelaide
Scotch College is an Independent school, independent, Uniting Church of Australia, Uniting Church, co-educational, Day school, day and boarding school, located on two adjacent campuses in Torrens Park, South Australia, Torrens Park and Mitcham, South Australia, Mitcham, inner-southern suburbs of Adelaide, South Australia. Founded in 1919 out of the earlier Kyre College (1902–1918), and incorporated under an Act of Parliament in 1922, Scotch currently caters for approximately 1000 students including more than 100 boarders in Years 7 to 12. Scotch College is affiliated with the Headmasters' and Headmistresses' Conference, the Association of Heads of Independent Schools of Australia (AHISA), the Association of Independent Schools of South Australia (AISSA), the Australian Boarding Schools' Association (ABSA), the Junior School Heads Association of Australia (JSHAA), the Independent Schools Sports Association (South Australia), Independent Schools Sport Association (ISSA) and the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helicopters
A helicopter is a type of rotorcraft in which lift and thrust are supplied by horizontally spinning rotors. This allows the helicopter to take off and land vertically, to hover, and to fly forward, backward and laterally. These attributes allow helicopters to be used in congested or isolated areas where fixed-wing aircraft and many forms of STOL (Short TakeOff and Landing) or STOVL (Short TakeOff and Vertical Landing) aircraft cannot perform without a runway. In 1942, the Sikorsky R-4 became the first helicopter to reach full-scale production.Munson 1968.Hirschberg, Michael J. and David K. Dailey"Sikorsky". ''US and Russian Helicopter Development in the 20th Century'', American Helicopter Society, International. 7 July 2000. Although most earlier designs used more than one main rotor, the configuration of a single main rotor accompanied by a vertical anti-torque tail rotor (i.e. unicopter, not to be confused with the single-blade monocopter) has become the most common h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mortar (weapon)
A mortar is usually a simple, lightweight, man-portable, muzzle-loaded weapon, consisting of a smooth-bore (although some models use a rifled barrel) metal tube fixed to a base plate (to spread out the recoil) with a lightweight bipod mount and a sight. They launch explosive shells (technically called bombs) in high-arcing ballistic trajectories. Mortars are typically used as indirect fire weapons for close fire support with a variety of ammunition. History Mortars have been used for hundreds of years. The earliest mortars were used in Korea in a 1413 naval battle when Korean gunsmiths developed the ''wan'gu'' (gourd-shaped mortar) (완구, 碗口). The earliest version of the ''wan'gu'' dates back to 1407. Choi Hae-san (최해산, 崔海山) (1380–1443), the son of Choe Mu-seon (최무선, 崔茂宣) (1325–1395), is generally credited with inventing the ''wan'gu''. In the Ming dynasty, general Qi Jiguang recorded the use of a mini cannon called the Hu dun pao that was simi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
