Gex shakes a mountain so hard that it causes an avalanche (Gex The Gecho)
Gex states that boulders and parts of the ground started breaking off the mountain and that the big ass cyclop he was fighting was buried in a pile of rocks. I think magnitude 7 is more than fair.
The average length of a snowy mountain in Greece is 128 km
Fromula:
(magnitude) plus 0.0238 times lengths in km = (results)
10(^1.5 times results plus 4.8)
(7) plus 0.0238 times 128 = 10.0464
10(^1.5 times 10.0464 plus 4.8) = 7.406e+19 Joules or 17.700764815566 Gigatons (Fucking Island)
Ok ok let's lowball it to magnitude 5 for fun
(5) plus 0.0238 times 128 = 8.0464
10(^1.5 times 8.0464 plus 4.8) = 7.406e+16 Joules or 17.700764815566 Megatons (City)
This is 100% an outlier but still crazy that bro did this IN BASE