Comet Asteroid Impacts and Human Society: An by Peter T. Bobrowsky (Editor), Hans Rickman (Editor)

By Peter T. Bobrowsky (Editor), Hans Rickman (Editor)

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Geological Survey of Canada Contribution 2005157. References Abramov O, Kring DA (2004) Numerical modeling of an impact-induced hydrothermal system at the Sudbury crater. J Geophys Res 109(10):E10007 1–16 Alvarez W, Muller R (1984) Evidence from crater ages of periodic impact on the Earth. Nature 308:712–720 Alvarez LW, Alvarez W, Asaro F, Michel HV (1980) Extraterrestrial cause for the Cretaceous-Tertiary extinction. Science 208:1095–1108 Ariskin AA, Deutsch A, Ostermann M (1999) The Sudbury “Igneous” Complex: simulating phase equilibria and in situ differentiation for two proposed parental magmas.

A notable exception to this ignorance is the work of anthropologist and historian Benny J. g. Peiser et al. 1998; Peiser 2002), but who also maintains the CCNet, a scholarly electronic network servicing these broad topics throughout Earth history. Many of the contributors to the present volume have used the CCNet to help facilitate their own research and interests. Ironically, of the 1 800 subscribers to the website, only a small number, certainly less than 50, are actually professional archaeologists and anthropologists (Peiser 2004).

See Kring (1997) for additional details ing vegetation and severely injuring or killing local fauna (Fig. 4; Kring 1997). The energy of the Tunguska explosion, Siberia, in 1908 was less than the impact energy of Barringer, but it occurred at an optimum blast height. Rather than reaching the ground, the incoming body exploded 5 to 10 km above the surface, producing devastation that was similar to that of the Barringer event (Fig. 5; Toon et al. 1997). Twenty-one hundred km2 of forest were damaged at Tunguska (Vasilyev 1998) and 1 000 to 2 100 km2 are believed to have been flattened around the Barringer crater (Kring 1997).

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