Naslov
Deposition of megabeds (megaturbidites) and sea-level change in a proximal part of Eocene-Miocene flysch of central Dalmatia (Croatia)

Autori
Marjanac, Tihomir

Izvornik
Geology (Boulder) (0091-7613) 24 (1996), 6; 543-546

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
turbidites; sea-level change; Dalmatia; Croatia

Sažetak
Some carbonate megabeds of the proximal part of Dalmatian Eocene-Miocene flysch basin (eastern Adriatic Sea) are underlain and overlain by conglomeratic fan-deltas, whereas thinner-bedded turbidites interfinger with fan-delta conglomerates. Fan deltas and interfingering turbidites are interpreted as deposited during lowstand(s) and early sea-level rise(s), whereas deposition of megabeds is attributed to periods of accelerated sea-level rises which aborted growth of fan deltas. Attribution of megabeds to periods of sea-level rise is based on the following observations: (1) they overlie some conglomeratic fan deltas, (2) skeletal and lithical debris in megabeds originated by subaerial weathering of older sediments, (3) their large thickness indicates considerable primary accumulation of debris and low frequency of flows. Sea-level changes inferred from megabeds are different from that of thinner classical turbidites, and distinction of the two is important for sequence stratigraphy in deep-marine sediments.

Izvorni jezik
Engleski

Znanstvena područja
Geologija

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