| a small, radially striated rock structure produced by intense shock, such as generated by meteorite impact. |
| shatter cone n. A conical fragment of rock that is formed from the high pressure of volcanism or meteorite impact and has striations radiating from the apex. |
shatter cone  (shāt'ər) Pronunciation Key
A fractured, conical fragment of rock that has striations radiating outward from the apex. Shatter cones are believed to form when rocks are subjected to shock waves associated with a meteoric impact. They are typically between a few centimeters and a few meters long. |
