Hello All! BUCHWALD V.F. (1975) Handbook of Iron Meteorites, Volume 1, pp. 33-34:
For the sake of clarity it should be noted here that giant meteorites can form two types of craters. The smaller crater is more properly called a large impact hole and is geerated by relatively small meteorites (< 50 tons) with relatively low velocities not exceeding 5 km/s. Such meteorites cause mechanical destruction of the ground and are themselves usually broken into a number of fragments upon impact. The major part of the meteortic fragments will remain in the impact hole with shattered rock and soil. Typical examples are the 100-1,700 kg iron meteorites of the Sikhote-Alin shower that produced impact holes 6-27 meters in diameter and buried themselves to depths of 2-8 meters. The genuine craters discussed here are more than 100 m in diameter and were formed as the result of an explosion at the moment of impact. The projectile itself vaporized almost entirely, and tremendous shock waves raced outward from the focus. ******************************************************************************** As if to find a compromise between list members who differ on what to call Carancas, the associated "hole" in the ground there obviously unites characteristics that place it in- between what should be called an impact hole and an impact crater. What a pleasant coincidence! ;-) Bernd ______________________________________________ Meteorite-list mailing list [email protected] http://six.pairlist.net/mailman/listinfo/meteorite-list
