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Yalwal
Yalwal is the site of a former gold mining town of the same name situated west of Nowra at the confluence of the Danjera and Yarramunmun Creeks which then forms Yalwal Creek which flows into the Shoalhaven River. It is now the site of a City of Shoalhaven managed picnic area and Danjera Dam. Yalwal is also the name of a modern locality, which includes the former mining town but extends over an extensive area of forests to its south, which largely forms parts of the Morton National Park. It is also the name of a parish, which lies to the north of the former mining town and generally north of the locality of Yalwal, generally in the area of the modern locality of Ettrema. The area now known as Yalwal lies on the traditional lands of the Wandandian people, a group of the Yuin. Mining Gold was first discovered in the area by Rev W.B. Clarke in 1852. Successful sluicing operations began in 1870 by J. Sivewright and party but were disrupted by the great flood of 1871. In 1872 open c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
St Vincent County
St Vincent County was one of the original Nineteen Counties in New South Wales and is now one of the 141 Cadastral divisions of New South Wales. It included the south coast area encompassing Batemans Bay, Ulladulla, Jervis Bay and inland to Braidwood. The Shoalhaven River is the boundary to the north and west, and the Deua River the boundary to the south. St. Vincent County was named in honour of John Jervis, 1st Earl of St Vincent (1735-1823), Admiral of the Fleet. The electoral district of United Counties of Murray and St Vincent and the electoral district of St Vincent were the first electoral districts for the area, between 1856 and 1859. In 1852 it had an area of and population of 2,572. , ''The Land of Gold: the Companion for the Welsh Emigrant to Australia'', 1852 [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
City Of Shoalhaven
The City of Shoalhaven is a local government area in the south-eastern coastal region of New South Wales, Australia. The area is about south of Sydney. The Princes Highway passes through the area, and the South Coast railway line traverses the northern section, terminating at Bomaderry. At the , the population was 108,531. The City was established on 1 July 1948 as the Shoalhaven Shire, following the amalgamation of the Municipalities of Nowra, Berry, Broughton's Vale, Ulladulla, South Shoalhaven, and the shires of Cambewarra and Clyde.The Governor of NSW on 13 July 1979 proclaimed Shoalhaven as a city. The Shire was converted and constituted on 1 August 1979 simultaneously as a municipality and city. History Modern-day groupings of the Illawarra and South Coast Aboriginal peoples are based on information compiled by white anthropologists from the late 1870s. Two divisions were initially presented (refer Ridley, 1878), using geographical location and language, though these ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yerriyong
Yerriyong is a locality in the City of Shoalhaven in New South Wales, Australia. It lies about 17 km to the southwest of Nowra on the road to Nerriga and Canberra. It is largely made up of eucalyptus forest. At the , it had a population of 25. The name is believed to be of Aboriginal origin, as in Tharawal The Dharawal people, also spelt Tharawal and other variants, are an Aboriginal Australian people, identified by the Dharawal language. Traditionally, they lived as hunter–fisher–gatherers in family groups or clans with ties of kinship, s ... "Yerri" means "tooth" and "ong" is a common place name ending, so it is considered to relate to an initiation ceremony. Yerriyong had a state school from 1885 to 1948. This was described as a "provisional school" (October 1882–April 1883), "public school" (1883–1895), or "half-time school" (June–September 1895). It was replaced by Yerriyong Vale, which was a "half-time school" (June–September 1895, 1906–1908 and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jerrawangala
Jerrawangala is a locality in the City of Shoalhaven in New South Wales, Australia. It consists of a small settlement on the Princes Highway south of Nowra and a large unpopulated area to the northwest that lies on both sides of the Braidwood Road between Nowra and Nerriga. It is about 35 kilometres south of Nowra and about 205 km south of Sydney. Jerrawangala is fairly rugged sandstone country and largely consists of forest. Much of it lies within the Jerrawangala National Park or state forests. Jerrawangala lookout is located to the east of the Braidwood Road. At the , it had a population of 70. Part of the Braidwood Road through Jerrawangala, part of the access road to Jerrawangala lookout, and the modern-day Wandean Road were built originally as part of The Wool Road (New South Wales), The Wool Road in 1841. References City of Shoalhaven Localities in New South Wales {{SouthCoastNSW-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Outcrop
An outcrop or rocky outcrop is a visible exposure of bedrock or ancient superficial deposits on the surface of the Earth. Features Outcrops do not cover the majority of the Earth's land surface because in most places the bedrock or superficial deposits are covered by soil and vegetation and cannot be seen or examined closely. However, in places where the overlying cover is removed through erosion or tectonic uplift, the rock may be exposed, or ''crop out''. Such exposure will happen most frequently in areas where erosion is rapid and exceeds the weathering rate such as on steep hillsides, mountain ridges and tops, river banks, and tectonically active areas. In Finland, glacial erosion during the last glacial maximum (ca. 11000 BC), followed by scouring by sea waves, followed by isostatic uplift has produced many smooth coastal and littoral outcrops. Bedrock and superficial deposits may also be exposed at the Earth's surface due to human excavations such as quarrying and build ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Granite
Granite () is a coarse-grained (phaneritic) intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly cools and solidifies underground. It is common in the continental crust of Earth, where it is found in igneous intrusions. These range in size from dikes only a few centimeters across to batholiths exposed over hundreds of square kilometers. Granite is typical of a larger family of ''granitic rocks'', or ''granitoids'', that are composed mostly of coarse-grained quartz and feldspars in varying proportions. These rocks are classified by the relative percentages of quartz, alkali feldspar, and plagioclase (the QAPF classification), with true granite representing granitic rocks rich in quartz and alkali feldspar. Most granitic rocks also contain mica or amphibole minerals, though a few (known as leucogranites) contain almost no dark minerals. Granite is nearly alway ... [...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, but may be porphyritic, containing larger mineral crystals (phenocrysts) in an otherwise fine-grained groundmass. The mineral assemblage is predominantly quartz, sanidine, and plagioclase. It is the extrusive equivalent to granite. Rhyolitic magma is extremely viscous, due to its high silica content. 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 extensively used 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 amendment. Description Rhyolite i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carboniferous
The Carboniferous ( ) is a geologic period and system of the Paleozoic that spans 60 million years from the end of the Devonian Period million years ago ( Mya), to the beginning of the Permian Period, million years ago. The name ''Carboniferous'' means "coal-bearing", from the Latin '' carbō'' ("coal") and '' ferō'' ("bear, carry"), and refers to the many coal beds formed globally during that time. The first of the modern 'system' names, it was coined by geologists William Conybeare and William Phillips in 1822, based on a study of the British rock succession. The Carboniferous is often treated in North America as two geological periods, the earlier Mississippian and the later Pennsylvanian. Terrestrial animal life was well established by the Carboniferous Period. Tetrapods (four limbed vertebrates), which had originated from lobe-finned fish during the preceding Devonian, became pentadactylous in and diversified during the Carboniferous, including early amphibian line ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bushfires In Australia
Bushfires in Australia are a widespread and regular occurrence that have contributed significantly to shaping the nature of the continent over millions of years. Eastern Australia is one of the most fire-prone regions of the world, and its predominant eucalyptus forests have evolved to thrive on the phenomenon of bushfire. However, the fires can cause significant property damage and loss of both human and animal life. Bushfires have killed approximately 800 people in Australia since 1851, and billions of animals. The most destructive fires are usually preceded by extreme high temperatures, low relative humidity and strong winds, which combine to create ideal conditions for the rapid spread of fire. Severe fire storms are often named according to the day on which they peaked, including the five most deadly blazes: Black Saturday 2009 in Victoria (173 people killed, 2,000 homes lost); Ash Wednesday 1983 in Victoria and South Australia (75 dead, nearly 1,900 homes); Black Frida ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sandstone
Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains. Sandstones comprise about 20–25% of all sedimentary rocks. Most sandstone is composed of quartz or feldspar (both silicates) because they are the most resistant minerals to weathering processes at the Earth's surface. Like uncemented sand, sandstone may be any color due to impurities within the minerals, but the most common colors are tan, brown, yellow, red, grey, pink, white, and black. Since sandstone beds often form highly visible cliffs and other topographic features, certain colors of sandstone have been strongly identified with certain regions. Rock formations that are primarily composed of sandstone usually allow the percolation of water and other fluids and are porous enough to store large quantities, making them valuable aquifers and petroleum reservoirs. Quartz-bearing sandstone can be changed into quartzite through metamorphism, usually related to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Permian
The Permian ( ) is a geologic period and stratigraphic system which spans 47 million years from the end of the Carboniferous Period million years ago (Mya), to the beginning of the Triassic Period 251.9 Mya. It is the last period of the Paleozoic Era; the following Triassic Period belongs to the Mesozoic Era. The concept of the Permian was introduced in 1841 by geologist Sir Roderick Murchison, who named it after the region of Perm in Russia. The Permian witnessed the diversification of the two groups of amniotes, the synapsids and the sauropsids ( reptiles). The world at the time was dominated by the supercontinent Pangaea, which had formed due to the collision of Euramerica and Gondwana during the Carboniferous. Pangaea was surrounded by the superocean Panthalassa. The Carboniferous rainforest collapse left behind vast regions of desert within the continental interior. Amniotes, which could better cope with these drier conditions, rose to dominance in place of their am ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plateau
In geology and physical geography, a plateau (; ; ), also called a high plain or a tableland, is an area of a highland consisting of flat terrain that is raised sharply above the surrounding area on at least one side. Often one or more sides have deep hills or escarpments. Plateaus can be formed by a number of processes, including upwelling of volcanic magma, extrusion of lava, and erosion by water and glaciers. Plateaus are classified according to their surrounding environment as intermontane, piedmont, or continental. A few plateaus may have a small flat top while others have wide ones. Formation Plateaus can be formed by a number of processes, including upwelling of volcanic magma, extrusion of lava, Plate tectonics movements and erosion by water and glaciers. Volcanic Volcanic plateaus are produced by volcanic activity. The Columbia Plateau in the north-western United States is an example. They may be formed by upwelling of volcanic magma or extrusion of lava. The un ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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