The general theory (scientific) of innervisioncrystals.net/blogs/ that they were formed at Stuttgart (southwestern Germany), 14,800,000 years before.
Based on calculations and laboratory simulations it can be assumed that the meteorite was 500 to 1000 m in diameter (1640 – 3220 ft.). It is likely that the meteorite came in an acute angle from the west (between 30-50deg).
The meteorite struck the earth and created a huge crater that measured approximately 25km (15.5 mile) in diameter. Rieskessel. The meteorite fragmented into smaller pieces prior to impact. It can be proven by the existence a smaller crater of approximately 4km (2.5mi). Steinheim. Ries Kessel’s distance is approximately 30km (18.6 mi). Scientists originally believed that Ries Kessel crater is volcanic (leftover volcano). Coesite, an unusual quartz variety, can be found in the Ries Kessel crater. This was created by heavy smelting rocks under high pressure after a meteorite impacts.
The meteorite reached the Earth atmosphere at a speed 22 km per second (13.7mi./s). During his flight through atmosphere, temperature rose to 5, 000 – 10000degC (9,000-18,000degF), on forward-facing region; pressure 500GPa
After the meteorite hit, the kinetic energy transferred caused the melting of the under rocks and the meteorite. This catapulted them to the top atmosphere layers. The melt turned glassy in the atmosphere and was then congelated. Drops from the melted mixture fell upon the Czech Republic territory and were washed away to make sediments. Current moldavites deposits relate to this Tertiary Lacustral sediments. The impact angel determined where the meteorite fell and how far it traveled between impact and melting moldavites. This distance is approximately 450km (280 miles). The fall field is where the molten moldavites impact area can be found.
Moldavites were then washed out of some locales to secondary fields.