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Wolfe Creek Crater
Wolfe Creek Crater is a well-preserved meteorite impact crater (astrobleme) in Western Australia.〔McNamara, K. ''Wolf Creek Crater ''illustrations by Ben Jackson. Perth, W.A : Western Australian Museum, 1982. ISBN 0-7244-9239-9〕
==Description==
It is accessed via the Tanami Road south of the town of Halls Creek. The crater is central to the Wolfe Creek Meteorite Crater National Park.
The crater averages about 875 metres in diameter, 60 metres from rim to present crater floor and it is estimated that the meteorite that formed it had a mass of about 50,000 tonnes,〔 while the age is estimated to be less than 300,000 years (Pleistocene).〔 Small numbers of iron meteorites have been found in the vicinity of the crater, as well as larger so-called 'shale-balls', rounded objects made of iron oxide, some weighing as much as 250 kg.
It was brought to the attention of scientists after being spotted during an aerial survey in 1947, investigated on the ground two months later, and reported in publication in 1949.〔Reeves F. & Chalmers R.O. (1949) 'The Wolf Creek crater', The Australian Journal of Science 11, 154-156.〕 The European name for the crater comes from a nearby creek, which was in turn named after Robert Wolfe (early reports misspell the name as Wolf Creek), a prospector and storekeeper during the gold rush that established the town of Halls Creek.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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