Rex wrote: > can anyone say about what size crater a 1500 and/ > or 600 pound projectile (meteorite) would make?
Hello Rex and List, This depends on many different factors. Here are some of these: - type of meteorite (iron, stone, stony-iron) - mass (initial mass, final mass) - entry velocity + impact velocity - entry angle - shape of the impacting body or bodies - ground (soft, swampy, rocky, frozen, etc.) Model assumption: Assuming a spherical, stony projectile with an impact velocity of 20 km/s and furthermore assuming a vertical impact, a stony meteorite whose diameter is about 2 meters will perhaps excavate a 40-meter diameter crater. But this is only a model calculation. The largest impact hole of the Sikhote-Alin iron meteorite had a diameter of 26 meters (= 85 feet) and was 6 meters deep. Numerous fragments ranging from 0.5 to 25 kg in weight and totaling several hundred kilograms were found in this impact hole. The largest unbroken individual of 1,745 kg, was found in a rather small pit of "only" 3.5 m in diameter and 0.8 m deep. The largest Jilin (stony) individual (mass = 1770 kg) which hit a field, penetrated to a depth of about 6 meters, fragmented at a depth of ca. 2.50 meters, and excavated a hole whose diameter was about 1.40 meters. Best wishes, Bernd ______________________________________________ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
