noun
definition
A layer that lies underneath another.
synonyms
definition
The underlying cause or basis of something.
definition
A substrate.
Examples of substrata in a Sentence
It is apparent that in many cases lichens are quite indifferent to the substrata on which they occur, whence we infer that the preference of several for certain substrata depends upon the temperature of the locality or that of the special habitat.
The substrata are mostly sandstone of various formation, and granitic gneiss, of which the rocks are mainly composed.
The principal substrata are, sandstone, amygdaloid alternated with trap, and red porphyry.
It was found to be normal for the type of has substrata that occurs in the district.
The principal substrata are limestone and freestone of excellent quality; and along the banks of the river, ironstone is found in abundance.
The role of biological effects studies and the use of artificial substrata and sediments in marine pollution monitoring is also discussed.
Supralittoral communities of rocky substrata are by far the commonest given that most of the islands ' coastline is of this type.
Thus it is fascinating to note that limestone aquifers are the major exception to crop formations occurring over chalk substrata.
The latter two factors probably have the greatest influence on the organisms that inhabit sand and gravel substrata.