Some buildings collapsed or suffered substantial damage, but there were no fatalities and only 16 people were injured. Figure 5. "We've currently got some temporary aftershock recorders at four sites south-west of Bowen," Geoscience team member Emma Mathews said. Create a free website or blog at WordPress.com. Large earthquakes on the Australian mainland are rare but seismologists are monitoring the development of what could be minor fault lines in north Queensland. "And 8:00 that night was the first one and it was not as bad of course as the first.". "I thought during the night, if we got a tsunami warning or whatever, the best thing to do was go up the hill," he said. This correspond to the map in Figure 1. "Generally earthquakes tend to occur in clusters around Australia," she said. The University of Melbourne geologists have uncovered evidence that parts of South-eastern Australia recently stirred from their geological slumber and are in an active mountain building phase. Here's why, Driver in crash that killed 19yo pedestrian when passenger pulled car's handbrake denied bail, Aftershocks continue to shake north Queensland, NBN boss blames $600m blowout on bad address data, 'Peddlers of death' warned as police seize $9m cash from drug traffickers in WA, Tuk-tuk driver tells de Belin trial alleged victim's 'exact words' when trio reached apartment, Saeb Erekat, longtime spokesman for Palestinians, dies aged 65, 'It's been done by stealth': Indigenous health groups condemn 'urgent' legislation set to fast track liquor store decision, Australian archaeologists discover 2-million-year-old skull of distant human cousin, The US election has been called, but the result isn't official… yet. In addition to being subjected to crustal stress, Adelaide has several fault lines running through it. "We'll have to wait and see what the data says before we can declare that there's a new fault line up there.". WESTERN Australia - home of the quokka, beach camels and most of the country's outback. This page was last edited on 3 June 2020, at 10:23. Yellow dots with a red ring indicate a significant earthquake. Change ). "The aftershocks that we've recorded on the permanent stations - there's approximately seven.". What are the most dangerous fault lines in the USA? The 1954 earthquake, while relatively low in magnitude, caused some damage because of its location. Surprisingly, in SA there is no easy correlation between where an earthquake may originate and where fault lines are. By the time Lewis and Clark arrived on the West Coast in 1805, it had been 105 years since the Cascadia Subduction Zone last ruptured, sending a large portion of the Pacific Ocean roaring toward the coast. Myers, J. S. (1992) Pinjarra Orogen, in Geology and Mineral Resources of Western Australia: Western Australia Geological Survey, Memoir 3, 77-119. And it's also home to one of the biggest fault lines in the world. Fault Lines Located in Australia Map data source courtesy : Geoscience Australia. The Darling Fault is one of the longest and most significant faults in Australia, extending for at least 1500 km in a north–south orientation near the west coast of southern Western Australia. “Australia is right in the middle of a plate and it’s not sitting on a major fault line,” Dr Fatahi said. Map showing fault lines running through Adelaide (Source: imageshack.com) Figure 3. This service may include material from Agence France-Presse (AFP), APTN, Reuters, AAP, CNN and the BBC World Service which is copyright and cannot be reproduced. Figure 2. The epicentre of that earthquake was west of Bowen with a magnitude similar to a quake that damaged a city in southern Spain earlier this month. ( Log Out / However, due to the geological composition (the Adelaide Plains being made up of primarily heavy clay), there was less damage than one would expect because the amplification of the tremor was lessened. https://en.wikipedia.org/w/index.php?title=Darling_Fault&oldid=960509300, Creative Commons Attribution-ShareAlike License. Sourced from the Geoscience Australia Earthquake Database. The fault is located on the western edge of the Ridge Hill Shelf; a good reference point of its location is the point where the Great Eastern Highway passes over the current Eastern railway line in Bellevue. Ms Mathews says a one-off quake on the Australian plate is usually followed up by many more smaller shakes. "We have them on the inside of the plate and this is related to stresses that build up in the tectonic plate. South Australia is being compressed in an East to West direction at a rate of approximately 0.1-0.2mm per year, which causes a considerable amount of crustal stress. Map showing the location of earthquakes from 1955-2015 in the Adelaide region. Out of all the capital cities in Australia, Adelaide is at the highest risk of a major earthquake. The 1954 earthquake is thought to have occurred along the Eden-Burnside Faultline, as seen in the maps below. Figure 4. How do we measure earthquakes and predict them? The fault zone is very ancient and initially formed during the Proterozoic Eon.. That's what it felt like inside the building - like a great noise sort of closing in you," he said. Figure 1. And this seems to be one of those examples.". Its main objective was to compile a World Map of Active Faults (Vladimir Trifonov, chairman). In the Perth area, the Darling Fault must once have coincided with the Darling Scarp, the abrupt escarpment immediately east of the city of Perth, but the scarp has since eroded eastward of the fault, leaving a formation of foothills known as the Ridge Hill Shelf. Large earthquakes on the Australian mainland are rare but seismologists are monitoring the development of what could be minor fault lines in north Queensland. The Cascadia Subduction Zone, Pacific Northwest . It is a major geological boundary separating the Archaean Yilgarn Craton in the east from the younger Pinjarra Orogen and overlying Phanerozoic Perth Basin to the west. I think I woke up a couple of minutes before each one of them probably because I was a bit tensed up from the first," he said. "I woke up during the night. Map showing fault lines running through Adelaide (Source: imageshack.com). In 1992, the USGS agreed to help compile maps and fault descriptions for countries in the Western Hemisphere (North, Central, and South America, as well as Australia and New Zealand). "They don't occur on subduction zones or plate boundaries like in New Zealand or Japan," she said. A team from Geoscience Australia has installed specialised equipment around Bowen to record every single aftershock since an earthquake in the region in April.
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