stratum

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For the recycled orogenic provenance, the sources are deformed and uplifted stratal sequences in subduction zones along collision orogen or within foreland fold-thrust belts.
Proposals along these lines have already been made in the literature by Ito and Mester (1995a), in a cophonological implementation of a lexicon stratification analysis of Japanese that they subsequently converted to constraint indexation, and by Kiparsky (2003), for Stratal Optimality Theory.
In the waning sun traversed by red stratal cloud, they would look from afar like an outcrop of the shore.