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Williams Island (South Australia)
Williams Island is an island in the Australian state of South Australia located off the south coast of Jussieu Peninsula on Eyre Peninsula approximately south-east of Port Lincoln. It was named by Matthew Flinders for Robert Williams who subsequently lost his life along with seven other crew in the capsize of a cutter launched from HM Sloop ''Investigator'' to search for water on 21 February 1802. Since 2004, the island has been part of the Memory Cove Wilderness Protection Area. Description Williams Island which is approximately south-east of Port Lincoln and south-south-east of West Point on the Jussieu Peninsula is broadly a U-shaped island with a maximum height of and an area of . While the island is bordered by cliffs, a bay with a sandy beach on its north coast provides both a sheltered anchorage for most wind directions and a point of access to the island. Formation, geology and oceanography Williams Island was formed about 9,100 years ago when sea levels ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Australian Bight
The Great Australian Bight is a large oceanic bight, or open bay, off the central and western portions of the southern coastline of mainland Australia. Extent Two definitions of the extent are in use – one used by the International Hydrographic Organization (IHO) and the other used by the Australian Hydrographic Service (AHS). The IHO defines the Great Australian Bight as having the following limits: ''On the North.'' The south coast of the Australian mainland. ''On the South.'' A line joining West Cape Howe () Australia to South West Cape, Tasmania. ''On the East.'' A line from Cape Otway, Victoria to King Island and thence to Cape Grim, the northwest extreme of Tasmania. The AHS defines the bight with a smaller area, from Cape Pasley, Western Australia, to Cape Carnot, South Australia - a distance of . Much of the bight lies due south of the expansive Nullarbor Plain, which straddles South Australia and Western Australia. The Eyre Highway passes close to the cli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dike (geology)
A dike or dyke, in Geology, geological usage, is a sheet of rock that is formed in a Fracture (geology), fracture of a pre-existing rock body. Dikes can be either Intrusive rock, magmatic or Sedimentary rock, sedimentary in origin. Magmatic dikes form when magma flows into a crack then solidifies as a sheet intrusion, either cutting across layers of rock or through a contiguous mass of rock. Clastic dikes are formed when sediment fills a pre-existing crack.Essentials of Geology, 3rd Ed, Stephen Marshak Magmatic dikes A magmatic dike is a sheet of igneous rock that cuts across older rock beds. It is formed when magma fills a fracture in the older beds and then cools and solidifies. The dike rock is usually more resistant to weathering than the surrounding rock, so that erosion exposes the dike as a natural wall or ridge. It is from these natural walls that dikes get their name. Dikes preserve a record of the fissures through which most mafic magma (fluid magma low in silica) reac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cape Catastrophe
Cape Catastrophe is a headland in the Australian state of South Australia located at the southeast tip of Jussieu Peninsula on Eyre Peninsula. It is one of the natural features named by the British navigator Matthew Flinders in memory of the eight crew who were lost from a cutter that capsized sometime after being launched from HM Sloop ''Investigator'' to search for water on 21 February 1802. Flinders also nominated the headland as being the western point of the mouth of Spencer Gulf. It is currently located within the gazetted locality of Lincoln National Park and the protected area known as the Memory Cove Wilderness Protection Area Memory Cove Wilderness Protection Area is a protected area in the Australian state of South Australia located on the south east tip of Jussieu Peninsula on Eyre Peninsula and on a number of nearby islands about south-south east of Port Lincoln .... References External linksShipwrecks - Cape Catastrophe Headlands of South Australia E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drowning
Drowning is a type of suffocation induced by the submersion of the mouth and nose in a liquid. Most instances of fatal drowning occur alone or in situations where others present are either unaware of the victim's situation or unable to offer assistance. After successful resuscitation, drowning victims may experience breathing problems, vomiting, confusion, or unconsciousness. Occasionally, victims may not begin experiencing these symptoms until several hours after they are rescued. An incident of drowning can also cause further complications for victims due to low body temperature, aspiration of vomit, or acute respiratory distress syndrome (respiratory failure from lung inflammation.). Drowning is more likely to happen when spending extended periods of time near large bodies of water. Risk factors for drowning include alcohol use, drug use, epilepsy, minimal swim training or a complete lack of training, and, in the case of children, a lack of supervision. Common drowning ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Little Grassbird
The little grassbird (''Poodytes gramineus'') is a species of Old World warbler in the family Locustellidae. It is found in Australia and in West Papua, Indonesia. These sexually monomorphic birds are found in reed beds, rushes, lignum swamps and salt marshes of Southeastern Australia. The little grassbird is an inconspicuous and dull-coloured bird that is heard more regularly than it is seen, known for readily engaging in conversation with people. They feed on insects and small arthropods, usually remaining in densely covered areas of vegetation and living nomadically with no regular migration patterns.Pizzey, G., Knight, D., Pizzey, S,. (1997). The Field Guide to the Birds of Australia by Graham Pizzey and Frank Knight. 470(3). Retrieved 13 June 2018 Taxonomy Old World warblers are a large group of birds formerly grouped together in the family Sylviidae. The family held over 400 species in over 70 genera, and were the source of much taxonomic confusion. Grass warblers are so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flesh-footed Shearwater
The flesh-footed shearwater (''Ardenna carneipes''; formerly ''Puffinus carneipes'') is a medium-sized shearwater. Its plumage is black. It has pale pinkish feet, and a pale bill with a distinct black tip. Together with the equally light-billed pink-footed shearwater, it forms the ''Hemipuffinus'' group, a superspecies which may or may not have an Atlantic relative in the great shearwater. These large shearwaters are among those that have been separated into the genus ''Ardenna''. Recent genetic analysis indicates evidence of strong divergence between Pacific colonies relative to those in South and Western Australia, thought to be explained by philopatry and differences in foraging strategies during the breeding season. A molecular phylogenetic study published in 2021 found very little genetic difference between the flesh-footed shearwater and the pink-footed shearwater (''Ardenna creatopus''). The authors of the study suggested that these two taxa might be better considered ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Short-tailed Shearwater
The short-tailed shearwater or slender-billed shearwater (''Ardenna tenuirostris''; formerly ''Puffinus tenuirostris''), also called yolla or moonbird, and commonly known as the muttonbird in Australia, is the most abundant seabird species in Australian waters, and is one of the few Australian native birds in which the chicks are commercially harvested. It is a migratory species that breeds mainly on small islands in Bass Strait and Tasmania and migrates to the Northern Hemisphere for the boreal summer. Taxonomy This shearwater appears to be related to the sooty and great shearwaters, which are also blunt-tailed, black-billed species, but its precise relationships are obscure (Austin, 1996; Austin ''et al.'', 2004). These are among the larger species of shearwater, which have been moved to a separate genus, ''Ardenna'' based on a phylogenetic analysis of mitochondrial DNA (Penhallurick & Wink, 2004). Ecology Each parent feeds the single chick for 2–3 days and then leaves for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bush Rat
The bush rat or Australian bush rat (''Rattus fuscipes'') is a small Australian Nocturnality, nocturnal animal. It is an omnivore and one of the most common indigenous species of rat on the continent, found in many heathland areas of Victoria (Australia), Victoria and New South Wales. Taxonomy The description of the species by G. R. Waterhouse was published in the second part of the series ''Zoology of the Voyage of H.M.S. Beagle'', edited by Charles Darwin. The species was assigned to the genus ''Mus (genus), Mus'', a once broader classification, and later placed with the genus ''Rattus''. The collection of the type specimen was made when HMS ''Beagle'' was anchored at King George Sound, a port at the southwest of the continent. The capture was noted by Darwin as "caught in a trap baited with cheese, amongst the bushes …". The type locality has been determined as Little Grove, Western Australia, south of Mount Melville in the city of Albany, Western Australia, Albany. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Douglas Mawson
Sir Douglas Mawson OBE FRS FAA (5 May 1882 – 14 October 1958) was an Australian geologist, Antarctic explorer, and academic. Along with Roald Amundsen, Robert Falcon Scott, and Sir Ernest Shackleton, he was a key expedition leader during the Heroic Age of Antarctic Exploration. Mawson was born in England and came to Australia as an infant. He completed degrees in mining engineering and geology at the University of Sydney. In 1905 he was made a lecturer in petrology and mineralogy at the University of Adelaide. Mawson's first experience in the Antarctic came as a member of Shackleton's ''Nimrod'' Expedition (1907–1909), alongside his mentor Edgeworth David. They were part of the expedition's northern party, which became the first to attain the South Magnetic Pole and to climb Mount Erebus. After his participation in Shackleton's expedition, Mawson became the principal instigator of the Australasian Antarctic Expedition (1911–1914). The expedition explored thousand ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pelargonium Australe
''Pelargonium australe'' is a perennial herb that is endemic to Australia, and found in all states except the Northern Territory. Common names include native storksbill, wild geranium and austral storksbill.VicFlora Flora of Victoria: ''Pelargonium australe''. Retrieved 16 January 2019. The species grows to 50 cm high and has leaves with 5 to 7 lobes. Umbels of 4 to 12 flowers appear between October and March in the species' native range. These are pink with darker markings. The species was first formally described in 1800 by German botanist |
Herbfield
Herbfields are plant communities dominated by herbaceous plants, especially forbs and grasses. They are found where climatic conditions do not allow large woody plants to grow, such as in subantarctic and alpine tundra environments. Herbfield is defined in New South Wales (Australia) government legislation as native vegetation that predominantly does not contain an over-storey or a mid-storey and where ground cover is dominated by non-grass species. The New Zealand Department of Conservation The Department of Conservation (DOC; Māori: ''Te Papa Atawhai'') is the public service department of New Zealand charged with the conservation of New Zealand's natural and historical heritage. An advisory body, the New Zealand Conservation Au ... has described herbfield vegetation as that in which the cover of herbs in the canopy is 20–100%, and in which herb cover is greater than that of any other growth form, or of bare ground.Lux et al. (2009). Various kinds of herbfield include ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
