The molecule of Avogadro has always been a decomposable particle.
Small, white, acid, permanent needles; not decomposable by water.
The old alchemists, who thought that gold was decomposable and therefore creatable, shrank from the idea of producing the diamond.
Manifestly, decomposable states of consciousness cannot exist before the states of consciousness out of which they are composed.
On the other hand, if this stratum is soft or decomposable it will show as a depression, or "sag" as it is called.