Wie sieht denn das Brekzien-Material aus - kenne nur das Glas...
GUROV E.P. et al. (2004) Shocked rocks and impact glasses from the El'gygytgyn impact structure, Russia (MAPS 39-9, 2004, pp. 1495-1508).
Im Abstract ist zu lesen:
Two main types of impact melt rocks occur in the crater:
(
1) impact melt rocks and
impact melt breccias (containing abundant fragments of shocked volcanic rocks) that were probably derived from (now eroded) impact melt flows on the crater walls, and
(
2) aerodynamically shaped impact melt glass “bombs” composed of homogeneous glass.
Bernd