new student of Oceanography here!
I'm studying Earth Science right now, and I found conflicting reporting re: the formation of the Grand Canyon; whether it was formed singularly by the Colorado River over millions of years, or if it was formed by other processes with the river only filling into it relatively recently.
Is there a consensus yet in geology with regard to the Grand Canyon's geologic history? If so, could you share resources that help explain it?
Thank you so much!