3 ms·
It's not related to the escarpment, that is a glacial feature. Their origin is not impact related, either, it is tectonic (the rift valley from a failed contine
by throwaway5752 3y ago
It's not related to the escarpment, that is a glacial feature. Their origin is not impact related, either, it is tectonic (the rift valley from a failed continental rift): https://en.wikipedia.org/wiki/Midcontinent_Rift_System https://en.wikipedia.org/wiki/Midcontinent_Rift_System