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Repetitive Subtidal-To-Coastal Sabkha Cycles From A Lower-Middle Miocene Marine Sequence, Eastern Sivas Basin, Faruk Ocakoğlu
Repetitive Subtidal-To-Coastal Sabkha Cycles From A Lower-Middle Miocene Marine Sequence, Eastern Sivas Basin, Faruk Ocakoğlu
Turkish Journal of Earth Sciences
In the study area, southeast of Zara in the Sivas Basin, the Lower-Middle Miocene marine Karacaören Formation consists of a succession of marine sedimentary rocks deposited within two trangressive-regressive cycles. The present study focuses on the facies characteristics, cyclic nature, and significance of the basin-wide distribution of a 100-m-thick gypsiferous sedimentary package overlying an otherwise transgressive segment of the lower sequence, within a marine setting. The typical lithologic expression of the studied sedimentary interval comprises generally fossiliferous mudstones, rare algal limestones and nodular gypsum. Detailed sedimentological observations, combined with palaeontological evidence, indicate that the mudstone intervals were deposited in a …