The best ways to avoid thick layers are to be sure the powder is totally dissolved, and when you chill it, put a piece of plastic wrap over the dish close to the surface of the Gelatin.
Canopy
nimbostratus
thick layer
compact bone
compact bone
Slowly, a thick layer of sediment built up the entire valley floor
Jello uses Gelatin to become thick & wiggly. Gelatin is a collagen byproduct obtained from animals. So Jello is not Vegan friendly.
A shield volcano. Generally they have runny lava that forms lots of thick layers. The Hawaiian island volcanos are good examples.
Stratosphere is pretty thick layer of earth. It is a layer which forms the essence of atmosphere. The stratosphere or the lower stratosphere consists of ozone gas.
Ozone layer is the thick layer. It protects us from UV rays of the sun.
2000 km thick
mantle is the thick layer before you reach the core of the earth