5. Facies Models and Geometries of the Ragusa Platform (SE Sicily, Italy) Near the Serravallian–Tortonian Boundary

  1. Maria Mutti2,
  2. Werner Piller3 and
  3. Christian Betzler4
  1. Cyril Ruchonnet and
  2. Pascal Kindler

Published Online: 3 APR 2012

DOI: 10.1002/9781118398364.ch5

Carbonate Systems during the Oligocene-Miocene Climatic Transition

Carbonate Systems during the Oligocene-Miocene Climatic Transition

How to Cite

Ruchonnet, C. and Kindler, P. (2012) Facies Models and Geometries of the Ragusa Platform (SE Sicily, Italy) Near the Serravallian–Tortonian Boundary, in Carbonate Systems during the Oligocene-Miocene Climatic Transition (eds M. Mutti, W. Piller and C. Betzler), Wiley-Blackwell, Oxford, UK. doi: 10.1002/9781118398364.ch5

Editor Information

  1. 2

    Institut für Erd- und Umweltwissenschaften Universität Potsdam, Postfach 60 15 53 D-14415 Potsdam, Germany

  2. 3

    Institute for Earth Sciences (Geology & Paleontology) University of Graz, Heinrichstrasse 26, A-8010 Graz, Austria

  3. 4

    Geologisch-Palaeontologisches Institut, Bundesstr. 55, D-20146 Hamburg, Germany

Author Information

  1. Section des Sciences de la Terre et de l'environement, 13 rue des Maraichers, 1205, Geneva, Switzerland

Publication History

  1. Published Online: 3 APR 2012
  2. Published Print: 5 APR 2012

Book Series:

  1. Special Publication Number 42 of the International Association of Sedimentologists

Book Series Editors:

  1. Ian Jarvis5,6

Series Editor Information

  1. 5

    School of Geography, Geology and the Environment Centre for Earth and Environmental Science Research, Kingston University London, UK

  2. 6

    Penrhyn Road, Kingston upon Thames KT1 2EE, UK

ISBN Information

Print ISBN: 9781444337914

Online ISBN: 9781118398364

SEARCH

Keywords:

  • Miocene;
  • Serravallian;
  • Tortonian;
  • Sicily Ragusa platform;
  • carbonate ramp;
  • lithofacies;
  • facies zones;
  • Monti Climiti Formation;
  • Carlentini Formation;
  • Palazzolo Formation

Summary

Detailed sequence and facies analyses of ten stratigraphic sections, positioned on two platform to basin transects across the Ragusa ramp (Sicily, Italy), demonstrate that two models of facies zones must be used to describe the internal architecture of this carbonate edifice near the Serravallian/Tortonian boundary. Seven facies zones, based on the palaeobathymetric position of the carbonate-producing biota, have been defined and described for each of these stages. During the late Serravallian, the inner ramp was characterized mainly by small epiphytic biota of the foramol association, whereas the middle ramp was dominated by rhodoliths and minor benthic foraminifera, bryozoans, barnacles, serpulids and echinoids. In contrast, during the early Tortonian, the inner ramp was characterized by a chlorozoan biota (Halimeda and Porites) and the middle ramp by branching Corallinacea and rhodoliths. This seemingly minor modification in the type and locus of carbonate production, and the associated changes in hydrodynamics, had profound consequences on the overall geometry of the platform, which evolved from a distally steepened ramp in the late Serravallian, to a geometry approaching that of a flat-topped platform in the early Tortonian.