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n.1.(Anc. Mus.) Intervening space; interval.
References in periodicals archive ?
Older researchers considered this formation as essentially made up of two lithologic bodies, recognized by different colors, with a diastem between (Soares, 1972, Fulfaro et al.
Tufa deposits will be studied in details concerning their internal primary features, tufa units and facies, microfabrics, diagenesis and interrupting diastem periods.
The contact between the top of the gypsum in unit 2 and the overlying shale is a diastem.