|
Great Western Tiers
The Great Western Tiers are a collection of mountain bluffs that form the northern edge of the Central Highlands plateau in Tasmania, Australia. The bluffs are contained within the Tasmanian Wilderness World Heritage Site. The bluffs stretch northwest to southeast over from the Western Bluff near the town of Mole Creek to the Millers Bluff, approximately west of Campbell Town.Lloyd, p.1 During the late 19th century the Tiers were known as the Great Western Range. Features The Central Highlands, or Tasmanian central plateau, was uplifted from the lower Meander Valley, most probably in the Eocene epoch though possibly earlier, forming the Tiers' escarpment. The plateau's north-east boundary, which ranges from –, originated in extensive Tertiary faulting. This escarpment divides the high, rocky, sparsely inhabited central plateau from the fertile lower land of the Meander Valley and the northern midlands. The edge of the tiers have prominent cliffs and columns of J ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australia
Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, smaller islands. With an area of , Australia is the largest country by area in Oceania and the world's List of countries and dependencies by area, sixth-largest country. Australia is the oldest, flattest, and driest inhabited continent, with the least fertile soils. It is a Megadiverse countries, megadiverse country, and its size gives it a wide variety of landscapes and climates, with Deserts of Australia, deserts in the centre, tropical Forests of Australia, rainforests in the north-east, and List of mountains in Australia, mountain ranges in the south-east. The ancestors of Aboriginal Australians began arriving from south east Asia approximately Early human migrations#Nearby Oceania, 65,000 years ago, during the Last Glacial Period, last i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eocene
The Eocene ( ) Epoch is a geological epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period in the modern Cenozoic Era. The name ''Eocene'' comes from the Ancient Greek (''ēṓs'', " dawn") and (''kainós'', "new") and refers to the "dawn" of modern ('new') fauna that appeared during the epoch. The Eocene spans the time from the end of the Paleocene Epoch to the beginning of the Oligocene Epoch. The start of the Eocene is marked by a brief period in which the concentration of the carbon isotope 13C in the atmosphere was exceptionally low in comparison with the more common isotope 12C. The end is set at a major extinction event called the ''Grande Coupure'' (the "Great Break" in continuity) or the Eocene–Oligocene extinction event, which may be related to the impact of one or more large bolides in Siberia and in what is now Chesapeake Bay. As with other geologic periods, the strata that define the start and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quamby Bluff
Quamby Bluff is a mountain in Northern Tasmania, Australia that is an outlying part of the Great Western Tiers mountain range. Geography and Geology Quamby Bluff lies from Deloraine by road, just north of the main escarpment of the Great Western Tiers mountain range. The name Quamby has been variously stated to be derived from Quarmby, the district in Huddersfield Yorkshire, or from a Viking word that means "mill farm", though most likely from local Tasmanian languages meaning either a "place of rest" or a "good camping place". Daniel Bunce in his 1859 book of memoirs postulated that the name was derived from an incident where a British colonist in the area aimed his gun at an Indigenous Tasmanian. The Tasmanian feel to his knees and yelled "Quamby!" which was interpreted to mean "Spare me!" or "Mercy!". The Tasmanian central plateau was uplifted from the lower Meander Valley, most probably in the Eocene epoch though possibly earlier, forming the escarpment of the Great Wes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mother Cummings Peak
The Mother Cummings Peak is one of the prominent peaks on the Great Western Tiers located in the Central Highlands region of Tasmania ) , nickname = , image_map = Tasmania in Australia.svg , map_caption = Location of Tasmania in AustraliaCoordinates: , subdivision_type = Country , subdi ..., Australia. With an estimated elevation of between above sea level, the summit of Cummings Head offers 360 degree views. The summit can be reached in about 1 – 2 hours (depending on fitness), and the track is rather steep. Two walking tracks lead to the summit: one from the north via Mole Creek, and the other from the south from the upper Meander Valley. See also * List of mountains in Tasmania References Mountains of Tasmania Central Highlands (Tasmania) {{CentralHighlandsTAS-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liffey River (Tasmania)
The Liffey River is a river in Northern Tasmania, Australia. Route and catchment area It flows from Projection Bluff on the north side of Dry's Bluff in the Great Western Tiers to the Meander River near Carrick, and is one of its main tributaries. The Liffey has a modern catchment area of which has been modified by human activity, specifically diversion for irrigation. Flow is highly seasonal with the largest average monthly flows from July to September. The flow, and effective catchment area, are affected by irrigation diversion. Excess flow from the Cressy-Longford irrigation scheme is diverted into the river increasing summer flow in the river's lower reaches. This irrigation diversion originates at the Poatina Hydroelectric Power Station's tailrace and enters the river near Bracknell. Though the upper hills are known for their cool temperate rainforest, land along most of the river's length is used for agriculture. Water quality in the lower reaches is affected by agricu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dry's Bluff
Dry's Bluff is a mountain in the Great Western Tiers Range in Tasmania. The walk to its summit is listed in The Abels as one of the hardest day walks in Tasmania with an elevation gain of over 1000m from the base of the plateau. Access to the start of the walk is through Bob Brown's residence Oura Oura which has the sign ''Trespassers Welcome'' on the gate. History It is probably named after Richard Dry, the first Tasmanian-born Premier of Tasmania, and son of Richard Dry Snr. an Irish political convict. Richard Dry Snr. was granted large amounts of land at Quamby Plains 30km north of the mountain. Geography and geology Dry's Bluff lies just south of Liffey at the edge of the central plateau and its summit is above sea level. It is made of Jurassic dolerite columns which are characteristic of the Great Western Tiers. Access The walk up Dry's Bluff starts at Oura Oura reserve, owned by Bush Heritage Australia. It then ascends over 1000m in 2.5 km through dry fore ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hill
A hill is a landform that extends above the surrounding terrain. It often has a distinct summit. Terminology The distinction between a hill and a mountain is unclear and largely subjective, but a hill is universally considered to be not as tall, or as steep as a mountain. Geographers historically regarded mountains as hills greater than above sea level, which formed the basis of the plot of the 1995 film ''The Englishman who Went up a Hill but Came down a Mountain''. In contrast, hillwalkers have tended to regard mountains as peaks above sea level. The ''Oxford English Dictionary'' also suggests a limit of and Whittow states "Some authorities regard eminences above as mountains, those below being referred to as hills." Today, a mountain is usually defined in the UK and Ireland as any summit at least high, while the official UK government's definition of a mountain is a summit of or higher. Some definitions include a topographical prominence requirement, typically ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Summit (topography)
A summit is a point on a surface that is higher in elevation than all points immediately adjacent to it. The topographic terms acme, apex, peak (mountain peak), and zenith are synonymous. The term (mountain top) is generally used only for a mountain peak that is located at some distance from the nearest point of higher elevation. For example, a big, massive rock next to the main summit of a mountain is not considered a summit. Summits near a higher peak, with some prominence or isolation, but not reaching a certain cutoff value for the quantities, are often considered ''subsummits'' (or ''subpeaks'') of the higher peak, and are considered part of the same mountain. A pyramidal peak is an exaggerated form produced by ice erosion of a mountain top. Summit may also refer to the highest point along a line, trail, or route. The highest summit in the world is Mount Everest with a height of above sea level. The first official ascent was made by Tenzing Norgay and Sir Edmund Hillary ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scree Slope
Scree is a collection of broken Rock (geology), rock fragments at the base of a cliff or other steep rocky mass that has accumulated through periodic rockfall. Landforms associated with these materials are often called talus deposits. Talus deposits typically have a concave upwards form, where the maximum inclination corresponds to the angle of repose of the mean debris particle size. The exact definition of scree in the primary literature is somewhat relaxed, and it often overlaps with both ''talus'' and ''colluvium''. The term ''scree'' comes from the Old Norse term for landslide, ''skriða'', while the term ''talus'' is a French word meaning a slope or embankment. In high-altitude arctic and Subarctic climate, subarctic regions, scree slopes and talus deposits are typically adjacent to hills and river valleys. These steep slopes usually originate from late-Pleistocene Periglaciation, periglacial processes. Notable scree sites in Eastern North America include the Ice Caves at W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dolerite
Diabase (), also called dolerite () or microgabbro, is a mafic, holocrystalline, subvolcanic rock equivalent to volcanic basalt or plutonic gabbro. Diabase dikes and sills are typically shallow intrusive bodies and often exhibit fine-grained to aphanitic chilled margins which may contain tachylite (dark mafic glass). ''Diabase'' is the preferred name in North America, while ''dolerite'' is the preferred name in the rest of the English-speaking world, where sometimes the name ''diabase'' refers to altered dolerites and basalts. Some geologists prefer to avoid confusion by using the name ''microgabbro''. The name ''diabase'' comes from the French ', and ultimately from the Greek - meaning "act of crossing over, transition". Petrography Diabase normally has a fine but visible texture of euhedral lath-shaped plagioclase crystals (62%) set in a finer matrix of clinopyroxene, typically augite (20–29%), with minor olivine (3% up to 12% in olivine diabase), magnetite (2%), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meander Valley
Meander Valley Council is a local government body in northern Tasmania. It covers the western outskirts of Launceston, and further westward along the Meander River. Meander Valley Council is classified as a rural local government area and has a population of 19,713. Major towns and localities of the region include Elizabeth Town, Mole Creek, Westbury and the principal town of Deloraine. History and attributes On 2 April 1993, the municipalities of Deloraine and Westbury were amalgamated to form the Meander Valley Council. Meander Valley is classified as rural, agricultural and very large under the Australian Classification of Local Governments. Localities The municipality includes the localities of Bracknell, Carrick, Chudleigh, Hagley, Meander, Mole Creek, Westbury, Elizabeth Town, Caveside, Exton and Travellers Rest. It also includes the outer western suburbs of Launceston including Blackstone Heights and Prospect Vale, and the satellite town of Hadspen. A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
