no there is not
"If not, Our Earth would be cratered like the Moon."
Why are you ignoring geological processe in the erasure of Earth craters? Why are you ingoring air burst?
More importantly, why are you ASSUUMING that the impact rate is constant over time?
"Geological reality is important in calibrating the impact threat to earth."
Yes, it sure is.
The archaeological record is important as well.
E.P. Grondine
Man and Impact in the Americas