Conglomerates of Northern Dalmatia (Coastal Dinarides, Croatia) (CROSBI ID 90296)
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Podaci o odgovornosti
Babić, Ljubomir ; Zupanič, Jožica
engleski
Conglomerates of Northern Dalmatia (Coastal Dinarides, Croatia)
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.
trace fossils; boring; Trypanites; Gastrochaenolites; Ichnofacies; Abrasion; nearshore; conglomerates; Dinarides; Eocene
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