I've often speculated such was the case. It might be fruitful for experts to investigate why Pangaea started to break up after what appears to be a long period of equilibrium. I wonder a lot, as well, about what kinds of events were involved in bringing deep plutonic rocks like Kimberlites to the surface in Africa, Siberia, Canada, Australia and other regions where diamond "pipes" are found. Could they have been the result of powerful impact events?
Pangaea broke up because it had been together quite long enough and it was all a big mistake to begin with, thank you very much.
:-)
I wonder a lot, as well, about what kinds of events were involved in bringing deep plutonic rocks like Kimberlites to the surface in Africa, Siberia, Canada, Australia and other regions where diamond "pipes" are found. Could they have been the result of powerful impact events?
No. Kimberlites are diatremes, which are caused by violent, volatile-rich eruptions from the deep mantle (hence, the diamonds, which require very high pressures to crystallize). Impacts, even the very largest events, only affect the upper few kilometers of planetary crusts.