Skiier Triggered Slab on Rifle Pk

Skiing Rifle Peak today, I triggered a small slab avalanche about 8" deep on a steep east-facing slope.  The snow ran about 150' down-slope.  No one was caught or buried; I skied out of the moving debris.  6-12" of new, very-low-density new snow sat on top of a 'punchy' slab beneath.  The loose new snow sloughed readily and naturally (numerous point releases occurred throughout our tour) but the underlying slab broke cohesively.