The thermal history of the Manicouagan impact melt sheet, Quebec

Details The thermal history of the Manicouagan impact melt sheet, Quebec The thermal history of the Manicouagan impact melt sheet, Quebec

Jun 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978jgr....83.2789o&link_type=abstract

Journal of Geophysical Research, vol. 83, June 10, 1978, p. 2789-2798.

Physics

33

Heat Transfer, Melting, Meteorite Craters, Meteoritic Damage, Canada, Dynamic Models, Melts (Crystal Growth), Thermodynamic Equilibrium

Scientific paper

Calculations for the heat transfer between superheated silicate melt and evenly dispersed 1-mm cold clasts indicate that most of the thermal gradients are smoothed out in 100 s and that the rate of equilibrium is sufficiently high so that clasts whose dissolution in the melt is slow may be preserved. The calculations also show the extent to which cold debris and clasts are melted. Calculations for cooling of the 200-m-thick melt sheet at Manicouagan suggest that complete crystallization takes 35 years at 10 m from the edge and 1600 years at the center.

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