Collocations for layer - noun

fine, thin
Everything was covered with a fine layer of dust.

deep, generous, heavy, thick
Mulch with a generous layer of peat or compost.

bottom, inner, lower, middle, outer, surface, top, upper
the upper layers of the earth''s atmosphere

double | protective
a protective layer of black plastic

ozone
holes in the ozone layer

form
Use enough gravel to form a layer about 50mm thick.

be covered by/with
The body had been covered with a thin layer of soil.

cake

beneath/under a/the ~
Beneath the surface layer of the skin are several further layers.

in ~s
The building is constructed in layers.

~ of
an extra layer of clothing a layer of bureaucracy multiple layers of meaning

layer after/on/upon layer
The remains lay buried under layer upon layer of black earth.