3. Groundmass

Vughs. Irregular voids whose origin cannot be attributed to a simple packing of units. Generally large sizes, normally not interconnected to other voids with a similar size.

Vesicles. With spherical or elliptical shapes and smooth walls. Typically due to gases.

Packing voids

Channels and chambers

Planes

There is a description of: shape, size, abundance and wall smoothness / roughness.

Key to voids