Preposition: of

• society: You can't avoid any stratum of American society.

• limestone: Thus the coal seams were laid down, together with their associated layers of clay, ironstone and strata of limestone.

• sandstone: Humboldt compares some of the stony beds, when viewed from a distance, to strata of a schistose sandstone.

Modifies a noun

• corneum: Firstly, the matrix in which the cells of the stratum corneum are embedded is rich in lipid.

• basale: In light skinned people, the melanin is concentrated deep in the epidermis, particularly in the stratum basale layer.

Converse of object

• expose: Visit the quarry to see some exposed strata and search for fossils.

Noun used with modifier

• ruling: The leading socialist and trade union cliques have their roots intertwined with those of the ruling stratum of the Third Republic.

Adjective modifier

• Carboniferous: The bulk of coal deposits in the UK occur in Upper Carboniferous strata.

• Mesozoic: Good exposures of range of Mesozoic strata - Mercia Mudstone Group to Glenarm Chalk Member.

• Jurassic: The galleries reach back deep into the Purbeck ridge in horizontal Jurassic strata.

• Cretaceous: Facies variation was also studied in Late Cretaceous strata.

• geological: The old waterfall has been replaced by the geological strata & time trail.

Noun used with modifier

• chalk: The site has two boreholes from which water is drawn from the chalk strata below.

• limestone: The limestone strata, resting on clay, dip inwards from above the entrance till they sink below the level of the river outside.

• rock: Detailed chemical analyzes of specific rock strata are beginning to show evidence of impacts of large bodies with the Earth.

• bearing: The survey looks at the history of the Rockingham Forest woodland together with the underlying iron bearing strata.