Ichnofauna research as a tool for unraveling the paleoclimatology and paleoecology in active continental margins : a case study from the cenozoic submarine fans of Pindos foreland basin in Achaia, Western Greece

• Κύριος συγγραφέας: Μπουρλή, Νικολίνα
• Άλλοι συγγραφείς: Ζεληλίδης, Αβραάμ
• Μορφή: Thesis
• Γλώσσα: English
• Έκδοση: 2017
• Θέματα: Submarine fan; Turbidite; Paleoevironment; Paleoclimate; Ichnofossils; Υποθαλάσσια ριπίδια; Τουρβιδίτες; Παλαιοπεριβάλλον; Παλαιοκλίμα; Ιχνοαπολιθώματα; 560.452 2

Turbidite facies distribution, ichnofacies and ichnofossils analysis of submarine fan can give results of paleoenvironment and paleoclimate in a sedimentary basin. The evolution in the Pindos foreland basin of the west Peloponnesus indicates that the part of the foreland was developed during Late Eocene to Early Oligocene in the sub-basin of Tritea. The purpose of this paper is to improve the knowledge of how the ichnofossils affect the sedimentary basin. The analysis of the diversity and the abundance of ichnotaxa submarine fans, results on paleoenvironments how they affect the sedimentary basin and the paleoclimate. In this study 16 different taxa of tracefossils have been recognized in deep-sea fan deposits. The sections which are closer to the Pindos thrust are characterized by high abundance, low diversity and low oxygen level in contrast with the distal areas from Pindos thrust which are characterized by low abundance, high diversity and high oxygen level. The ichnodiversity and ichnoabundance decrease upward gradually reflecting the impact of the changing depositional environments from basin floor fans, to slope systems and then to shelf environments. The regional basin-fill history, rather than global climatic changes, was probably the fundamental controlling factor on the distribution of trace fossils across the E/O boundary.