Facies

, Volume 42, Issue 1, pp 51–57

Borings in mobile clasts from Eocene conglomerates of Northern Dalmatia (Coastal Dinarides, Croatia)

  • Ljubomir Babić
  • Jožica Zupanič
Article

DOI: 10.1007/BF02562566

Cite this article as:
Babić, L. & Zupanič, J. Facies (2000) 42: 51. doi:10.1007/BF02562566

Summary

Bored clasts occur in Eocene conglomerates deposited in the upper shoreface and beachface settings of the Dinaric foreland basin. The trace fossil assemblage consists ofGastrochaenolites, Trypanites, and possibly some other ichnotaxa and may be compared to theTrypanites 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.

Keywords

Trace Fossils Boring Trypanites Gastrochaenolites Ichnofacies Abrasion Nearshore Conglomerates Dinarides Eocene 

Copyright information

© Institut für Palaentologie, Universitat Erlangen 2000

Authors and Affiliations

  • Ljubomir Babić
    • 1
  • Jožica Zupanič
    • 2
  1. 1.Institute of Geology and Paleontology, Faculty of ScienceUniversity of ZagrebZagrebCroatia
  2. 2.Institute of Mineralogy and Petrography, Faculty of ScienceUniversity of ZagrebZagrebCroatia