Biblical View of Earth HistoryGenesis 7 establishes that there was a global flood as it
reads, "And the waters prevailed exceedingly on the earth; and all the high mountains
that are under all the heavens were covered. Fifteen cubits upward the waters
prevailed; and the mountains were covered." The waters covered the planet
for a year until Noah, his wife, and their sons and daughters-in-law were finally
able to leave the ark and start to repopulate the Earth.
We're not told explicitly how the Earth was affected, but we can imagine.
Many of the geologic features resulting from the flood were not the result of
long slow processes, but rapid catastrophic events.