Henbury Meteorites Conservation Reserve Ghan [1] , Northern Territory | |
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Nearest town or city | Alice Springs |
Coordinates | 24°34′21″S133°8′52″E / 24.57250°S 133.14778°E |
Established | 1964 [2] |
Area | 16 hectares (40 acres) [2] |
Managing authorities | Parks and Wildlife Commission of the Northern Territory |
See also | Protected areas of the Northern Territory |
Henbury Meteorites Conservation Reserve is a protected area in the Northern Territory of Australia located in the locality of Ghan. [1]
Henbury craters are a result of one of the few impact events that have occurred in a populated area (few other examples are Kaali crater in Estonia and 2007 Carancas impact event in Peru).
The reserve is located 125 km (78 mi) south west of Alice Springs and contains over a dozen craters, which were formed when a fragmented meteorite hit the Earth’s surface.[ citation needed ]
Henbury is one of five meteorite impact sites in Australia with remaining meteorite fragments and one of the world's best preserved examples of a small crater field. [3] [4] Henbury was the earliest documented example of impact cratering in Australia. [5]
Henbury craters | |
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Impact crater/structure | |
Confidence | Confirmed |
Diameter | 7 to 180 m (23 to 591 ft) |
Depth | 15 m (49 ft) |
Age | 4,700 years old |
Country | Australia |
At Henbury there are 13 to 14 craters ranging from 7 to 180 m (23 to 591 ft) in diameter and up to 15 m (49 ft) in depth that were formed when the meteor broke up before impact. Several tonnes of iron-nickel fragments have been recovered from the site. The site has been dated to ≤4.7 thousand years ago based on the cosmogenic 14C terrestrial age of the meteorite [6] and 4.2±1.9 thousand years ago using fission track dating. [7]
The craters are named for Henbury Station, a nearby cattle station named in 1875 for the family home of its founders at Henbury in Dorset, England. The craters were discovered in 1899 by the manager of the station, then went uninvestigated until interest was stirred when the Karoonda meteorite fell on South Australia in 1930. [8] The first scientific investigations of the site were conducted by A.R. Alderman of the University of Adelaide who published the results in a 1932 paper entitled The Meteorite Craters at Henbury Central Australia. [9] Numerous studies have been undertaken since.
The Henbury crater field lies at the crossroads of several Aboriginal language groups, including Arrernte, Luritja, Pitjantjatjarra, and Yankunytjatjara. It is considered a sacred site to the Arrernte people and would have formed during human habitation of the area. [10] J.M. Mitchell [11] said that older Aboriginal people would not camp within a couple of miles of the Henbury craters. An elder Aboriginal man who accompanied Mitchell to the site explained that Aboriginal people would not drink rainwater that collected in the craters, fearing the "fire-devil" would fill them with a piece of iron. The man claimed his paternal grandfather had seen the fire-devil and that he came from the Sun. An Aboriginal contact said of the crater field: tjintu waru tjinka yapu tjinka kurdaitcha kuka, which roughly translates in the Luritja language as "A fiery devil ran down from the Sun and made his home in the Earth. He will burn and eat any bad blackfellows." This indicates a living memory of the event. [12]
A different story was recorded by Charles Mountford [13] that attributed the largest crater's formation to an anthropomorphic lizard woman (called Mulumura) tossing soil out of the crater, forming its bowl-shape. The soil discarded by Mulumura explained the piles of meteoritic iron around the craters and the presence of ejecta rays (which are unique to terrestrial impacts but are now gone due to prospecting at the site). [14] This probably relates to Dreaming stories about ancestral lizard beings from the area of Henbury station near the Finke River, just north of the crater field. The Parks and Wildlife Commission of the Northern Territory give the Arrernte name for the crater field as Tatyeye Kepmwere (or Tatjakapara).
In 1980, the conservation reserve was listed on the now-defunct Register of the National Estate. [15] The craters were listed as one item on the Northern Territory Heritage Register on 13 August 2003. [16]
An impact crater is a circular depression in the surface of a solid astronomical object formed by the hypervelocity impact of a smaller object. In contrast to volcanic craters, which result from explosion or internal collapse, impact craters typically have raised rims and floors that are lower in elevation than the surrounding terrain. Lunar impact craters range from microscopic craters on lunar rocks returned by the Apollo program and small, simple, bowl-shaped depressions in the lunar regolith to large, complex, multi-ringed impact basins. Meteor Crater is a well-known example of a small impact crater on Earth.
Karlu Karlu / Devils Marbles Conservation Reserve is a protected area in the Northern Territory of Australia located in the locality of Warumungu about 105 km (65 mi) south of Tennant Creek, and 393 km (244 mi) north of Alice Springs. The nearest settlement is the small town of Wauchope located 9 km (5.6 mi) to the south.
Tektites are gravel-sized bodies composed of black, green, brown or grey natural glass formed from terrestrial debris ejected during meteorite impacts. The term was coined by Austrian geologist Franz Eduard Suess (1867–1941), son of Eduard Suess. They generally range in size from millimetres to centimetres. Millimetre-scale tektites are known as microtektites.
Boxhole is a young impact crater located approximately 180 km north-east of Alice Springs in the Northern Territory, Australia. It is 170 metres in diameter and its age is estimated to be 5,400 ± 1,500 years based on the cosmogenic 14C terrestrial age of the meteorite, placing it in the Holocene. The crater is exposed to the surface.
Dalgaranga crater is a small meteorite impact crater located on Dalgaranga pastoral station 75 km northwest of Mount Magnet in Western Australia. It is only 24 m in diameter and 3 m deep, making it Australia's smallest impact crater. Though discovered in 1921, it was not reported in the scientific literature until 1938. The bedrock at the site is weathered Archaean granite of the Yilgarn Craton. The discovery of fragments of mesosiderite stony-iron meteorite around the crater confirms an impact origin, making this crater unique as the only one known to have been produced by a mesosiderite projectile.
Gosses Bluff is thought to be the eroded remnant of an impact crater. Known as Tnorala to the Western Arrernte people of the surrounding region, it is located in the southern Northern Territory, near the centre of Australia, about 175 km (109 mi) west of Alice Springs and about 212 km (132 mi) to the northeast of Uluru. It was named by Ernest Giles in 1872 after Australian explorer William Gosse's brother Henry, who was a member of William's expedition.
Liverpool is a meteorite impact crater situated in Arnhem Land within the Northern Territory, Australia. It was named after the nearby Liverpool River. Liverpool is remote and difficult to access. The crater has a raised, near-circular rim averaging about 1.6 km in diameter. It was first noticed by geologists during reconnaissance geological mapping in the 1960s, and although an impact origin was considered possible, this was not confirmed until a more detailed study was undertaken in 1970.
Veevers crater is an impact crater located on a flat desert plain between the Great Sandy and Gibson Deserts in the center of the state of Western Australia. The site is very remote and difficult to visit. The crater was discovered from the air in July 1986 during a government geological survey and named in honor of Australian geologist John Veevers who had worked in the area in the late 1970s. At the time of discovery a meteorite impact origin was suspected, but could not be proven. The subsequent discovery of iron meteorite fragments around the crater by E.M. and C.S. Shoemaker in 1987 removed any doubt about its origin.
Wolfe Creek Crater is a well-preserved meteorite impact crater (astrobleme) in Western Australia.
Chambers Pillar is a sandstone formation some 160 km (100 mi) south of Alice Springs in the Northern Territory of Australia.
An ejecta blanket is a generally symmetrical apron of ejecta that surrounds an impact crater; it is layered thickly at the crater's rim and thin to discontinuous at the blanket's outer edge. The impact cratering is one of the basic surface formation mechanisms of the solar system bodies and the formation and emplacement of ejecta blankets are the fundamental characteristics associated with impact cratering event. The ejecta materials are considered as the transported materials beyond the transient cavity formed during impact cratering regardless of the state of the target materials.
The Ewaninga Conservation Reserve is a protected area in the Northern Territory of Australia consisting of an area of low sand dunes, rocky outcrops and a claypan about 35 kilometres (22 mi) south of Alice Springs. It is significant because of a large number of Aboriginal rock carvings.
Henbury is a district of Bristol, England, formerly a village in Gloucestershire.
Rainbow Valley Conservation Reserve is a protected area located south of Alice Springs, Northern Territory in Australia. The reserve was established in 1990 to protect the unique sandstone formations and the Aboriginal art, artifacts and sacred natural objects within an area of 24.83 km2 (9.59 sq mi) around a large sandstone bluff. The sandstone layers in the main formation resemble the coloured stripes of a rainbow, with the red-orange hues of sandstone that is rich with iron creating a strong contrast with the lighter shaded sandstone that turns pale yellow or gold in the late day sun as it shines on the northwest-facing cliffs.
Victor A. Gostin is an Australian geologist, who discovered in the Flinders Ranges of South Australia, a deposit of volcanic material that was ejected from the 300-kilometre distant Acraman crater when the impact was created by a meteorite some 580 million years ago. He is an associate professor at the University of Adelaide, Department of Earth Sciences, School of Physical Sciences.
The Luritja or Loritja people, also known as Kukatja or Kukatja-Luritja, are an Aboriginal Australian people of the Northern Territory. Their traditional lands are immediately west of the Derwent River, that forms a frontier with the Arrernte people, with their lands covering some 27,000 square kilometres (10,300 sq mi). Their language is the Luritja dialect, a Western Desert language.
Ghan is a locality in the Northern Territory of Australia located about 1,470 kilometres (910 mi) south of the territory capital of Darwin at the intersection of Lasseter Highway and Stuart Highway.
N'Dhala Gorge Nature Park is a protected area in the Northern Territory of Australia consisting of an area of low sand dunes, rocky outcrops, about 90 kilometres (56 mi) east of Alice Springs. It is significant principally because of thousands of Indigenous rock carvings.
John Flynn's Grave Historical Reserve, more commonly referred to as Flynn's Grave is the grave site of John Flynn who was an Australian Presbyterian minister who founded the Australian Inland Mission (AIM) and founding the Royal Flying Doctor Service. The grave, which is now a historical reserve, is located at the base of Mount Gillen on Larapinta Drive in the Alice Springs suburb of Flynn.