Spider crater

- 16.739444444444126.09027777778Koordinaten: 16 ° 44 ' 22 " S, 126 ° 5' 25" E

Spider is the name for an impact structure in the Kimberley region of Western Australia. Because of the very difficult terrain, the heavily eroded impact crater is practically impossible to achieve. The name Spider ( German "spider" ) is derived from the eye-catching spider-like structure, as can be seen on aerial and satellite images.

The unusual geological structure was a mystery since the 1950s. Only after radiation cones were found in the center in the late 1970s, it was clear that there is a eroded impact crater in Spider. The central region of the beam cones is interpreted as the remnant of the central uplift. The outer limits of the disorder have diameter of 11 km to 13 km, is being assumed that the original crater was bigger. The asymmetry of the structure explain some geologists with the flat entry angle of the celestial body north or north-westerly direction, while other geologists see the cause in the original terrain.

The timing of the impact is not yet precisely determined, but it is believed that it took place after the folding of the quartzites in the Proterozoic, but before local glacial erosion. If these assumptions are correct, then the impact is likely to be done before 600 to 900 million years.

Swell

• Impact structures of the world Database by Jarmo Molianen Accessed on 26 October 2010
• Earth Impact Database Retrieved on October 7, 2013
• A. Abel informaworld.com Spider impact structure, Kimberley Plateau, Western Australia: interpretations of formation mechanism and age based on integrated map- scale data Accessed on 26 October 2010
• Shoemaker, EM & Shoemaker, CS SAO / NASA Astrophysics Data System (ADS ) Proterozoic impact record of Australia Accessed on 26 October 2010

• Impact craters in Australia
• Geography (Western Australia)