What is another word for sub-strata?
Pronunciation: [sˈʌbstɹˈɑːtə] (IPA) 
Sub-strata refers to a layer or level underneath the surface or the main layer. Some synonyms that can be used for sub-strata include underlying layer, sub-terrain, substratum, bedrock, foundation, base level, and solid substructure. Other synonyms include lower stratum, basement, bottom layer, substrata, underground layer, and foundational layer. These terms are commonly used in various fields such as geology, biology, sociology, and archaeology to describe the underlying layers or levels that are hidden from view. Using appropriate synonyms for sub-strata in different contexts can help to convey a more precise meaning and improve the clarity and accuracy of a written document or conversation.
