I'll take a shot at it, although I'm no expert. . . two things with variations; 1 is the angle of attack whether it's shallow would most likely crumble easily or the steeper angle digs deeper and shaves like a sod. The other may have to do with the ground consistency where the dryer it is the lesser it holds together, and of course the wet/moist grounds would tend to hold together. Anyway, any of these combination might explain it. Of course, all of these combination will vary with how much power was applied to the shot. It wouldn't matter what condition the fairways are, if it's just too steep an angle of a blow reaches the ground at over 65 mph, every part on the persons body would probably vibrate for a few minutes if the shaft haven't already broken in half. (lol)
How'd I do?