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Goat Paddock is a 5 km-diameter near-circular bowl-shaped depression in a range of gently dipping Proterozoic sandstone in the Kimberley Region of northern Western Australia, 106 km west-southwest of Halls Creek. It is interpreted as an ancient meteorite impact crater, the evidence including breccia containing melted rocks, silica glass, shatter cones and shocked quartz.〔Harms J.E., Milton D.J., Ferguson J., Gilbert D.J., Harris W.K. & Goleby B. 1980. Goat Paddock cryptoexplosion crater, Western Australia. Nature 286, 704–706. (Abstract )〕〔Milton D.J. & Macdonald F.A. 2005. Goat Paddock, Western Australia: an impact crater near the simple – complex transition. Australian Journal of Earth Sciences 52, 691–698. (Abstract )〕 Drilling shows that the crater is filled with about 200 m of ancient lake sediments containing Early Eocene pollen, this age thus giving a minimum estimate for the age of the crater itself.〔 The crater is not perfectly circular, but slightly elongated in a north–south direction, suggesting that the projectile struck at low angle from either the north or south. Image:Goat Paddock Western Australia.jpg|Landsat image of the Goat Paddock crater (circular feature in centre); screen capture from the NASA World Wind program. Image:Goat Paddock Western Australia oblique.jpg|Oblique Landsat image draped over digital elevation data (x3 vertical exaggeration), Goat Paddock crater (circular feature in centre); screen capture from the NASA World Wind program. Image:Goat Paddock Crater.jpg|The crater can be seen at the centre of this image. ==References== 〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Goat Paddock crater」の詳細全文を読む スポンサード リンク
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