What is another word for super-strata?
Pronunciation: [sˈuːpəstɹˈɑːtə] (IPA) 
Super-strata is a term used to describe the uppermost layer of rock laid down during a particular period. Synonyms for this word include stratum, layer, deposit, formation, and bed. Stratum refers to a single layer of rock, while layer implies a succession of strata. Deposit and formation both refer to the process of depositing or forming sedimentary layers. Bed is typically used in geological mapping to describe an individual layer of rock that can be traced over a large area. These words are all interchangeable and can be used to describe the different layers that make up the earth's crust.
