Stages in the Evolution of Late Triassic and Jurassic Carbonate Platforms: The Western Margin of the Subalpine Basin (Ardèche, France)

  1. Maurice E. Tucker2,
  2. James Lee Wilson3,
  3. Paul D. Crevello4,
  4. J. Rick Sarg5 and
  5. J. Fred Read6
  1. S. Elmi

Published Online: 15 APR 2009

DOI: 10.1002/9781444303834.ch5

Carbonate Platforms: Facies, Sequences and Evolution

Carbonate Platforms: Facies, Sequences and Evolution

How to Cite

Elmi, S. (1986) Stages in the Evolution of Late Triassic and Jurassic Carbonate Platforms: The Western Margin of the Subalpine Basin (Ardèche, France), in Carbonate Platforms: Facies, Sequences and Evolution (eds M. E. Tucker, J. L. Wilson, P. D. Crevello, J. Rick Sarg and J. F. Read), Blackwell Publishing Ltd., Oxford, UK. doi: 10.1002/9781444303834.ch5

Editor Information

  1. 2

    Durham, UK

  2. 3

    New Braunfels, Texas, USA

  3. 4

    Littleton, Colorado, USA

  4. 5

    Midland, Texas, USA

  5. 6

    Blacksburg, Virginia, USA

Author Information

  1. Centre des Sciences de la Terre, UA 11 CNRS, Centre de Paléontologie Stratigraphique et Paléoécologie, 27-43, Bd du 11 Novembre 1918 F-69622 Villeurbanne Cedex, France

Publication History

  1. Published Online: 15 APR 2009
  2. Published Print: 22 DEC 1986

ISBN Information

Print ISBN: 9780632027583

Online ISBN: 9781444303834

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Keywords:

  • stages in evolution of late Triassic and Jurassic carbonate platforms;
  • Mesozoic sedimentation;
  • Palaeostructural and palaeobathymetric reconstructions;
  • tectonic controls;
  • revival of slope – late Callovian – early Oxfordian event

Summary

Comparative sedimentological, palaeontological and structural studies document different kinds of controls on the origin, development and termination of carbonate platforms and adjacent basins. Jurassic sedimentation in the Vivarais–Cévennes area of the French Subalpine Basin was controlled by local tectonics, Tethyan structural evolution, eustacy and climate. The environment changed through time from: (1) sandy alluvial plains; to (2) a shallow proximal platform; (3) distal platform; (4) segmented, small, narrow sub-basins (umbilics); and to (5) a slope of a continental margin. The evolution is illustrated by palinspastic reconstructions, isopach maps and facies analyses of both outcrop and well data.

The vertical arrangement of facies was different in the contiguous blocks where sedimentation was mainly controlled by local tectonics. In contrast, vertical successions of facies were similar when more regional controls were involved. The first type of facies sequence is contemporaneous with a stage of rifting. The second results from more global processes (seafloor spreading, sea-level variations and climatic changes).

At the end of the Jurassic, physiographic, chemical and probably climatic conditions changed as the area went from being segmented to a large and open basin. Afterwards, some particular facies such as iron ore, ‘grumeleux’ facies and Ammonitico Rosso, disappeared from the region, and from Tethys. Some of these changes could be related to the modification of oceanic water circulation.