Using vertical dikes as a new approach to constraining the size of buried craters: An example from Lake Wanapitei, Canada
Published:January 01, 2005
E. L'Heureux, H. Ugalde, B. Milkereit, J. Boyce, W. Morris, N. Eyles, N. Artemieva, 2005. "Using vertical dikes as a new approach to constraining the size of buried craters: An example from Lake Wanapitei, Canada", Large Meteorite Impacts III, Thomas Kenkmann, Friedrich Hörz, Alex Deutsch
Download citation file:
Lake Wanapitei, located within the Southern Province of Ontario, Canada, provides the setting for a unique study of an impact crater situated within a shield environment. Evidence for the 7.5-km-diameter Wanapitei impact includes a circular Bouguer gravity low centered over the central area of the lake and features of shock metamorphism in samples of glacial drift found on the southern shores. Geophysical studies of craters in hard-rock environments are often limited by the lack of markers used for exploration; this may be overcome with the use of the large igneous dike swarms that characterize Archean terrains. The 1.2 Ga Sudbury...