It is seldom more than 10 feet thick, and it contains, as a rule, a few irregular layers of limestone and calcareous sandstone.

The rock face was made up of irregular terraced layers whose edges ran mainly in a vertical direction.

The canyons of the area are composed of irregular layers of sandstone, marked by multiple benches and talus slopes.

In essence, aloe bark is actually overlapping, irregular layers of incomplete bark tissues.

Unlike granite, however, gneiss has wavy, irregular layers of light and dark minerals, such as quartz, feldspar, mica, and hornblende.

It is used to interpret seismic refraction profiles over irregular layers whose slope angles are less than 10 .

Finally, a few flyover bridges - connection lines - form a more irregular third layer.

The uppermost mantle plus overlying crust are relatively rigid and form the lithosphere, an irregular layer with a maximum thickness of perhaps 200 km.

Inside the syncytium is an irregular layer of circular muscle fibres, and within this again some rather scattered longitudinal fibres; there is no endothelium.

A distinct, gelatinous glycocalyx is called a Bacterial capsule, whereas an irregular, diffuse layer is called a slime layer.