Naslov
Borings in Mobile Clasts from Eocene Conglomerates of Northern Dalmatia (Coastal Dinarides, Croatia)
(Conglomerates of Northern Dalmatia (Coastal Dinarides, Croatia))

Autori
Babić, Ljubomir ; Zupanič, Jožica

Izvornik
Facies (0172-9179) 42 (2000); 51-58

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

Ključne riječi
trace fossils; boring; Trypanites; Gastrochaenolites; Ichnofacies; Abrasion; nearshore; conglomerates; Dinarides; Eocene

Sažetak
Bored clasts occur in Eocene conglomerates deposited in the upper shoreface and beachface settings of the Dinaric foreland basin. The trace fossil assemblage consists of Gastrochaenolites, Trypanites, and possibly some other ichnotaxa and may be compared to the Trypanites Ichnofacies. The preservation characteristics of the borings reflect many stages of colonisation/boring and abrasion. The removal of shells of the boring bivalves, the different depths of the abrasional truncation of borings, and the predominant preservation of the largest excavations (Gastrochaenolites) in the ichnocoenosis are related to repeated phases of abrasion, caused by the mobility of clasts. Coastal gravel is a specific variant of hard substrates, whose mobility controls the colonisation of borers, the type of assemblage and its preservation potential.

Izvorni jezik
Engleski

Znanstvena područja
Geologija

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